Mauri Lounasmaa, Ph.D. - Publications

Affiliations: 
Chemistry Helsinki University of Technology, Helsinki, Finland 
Area:
organic chemistry

170 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2009 Lounasmaa M, Tolvanen A. Pyridines and their Benzo Derivatives: Reactivity of Reduced Compounds Comprehensive Heterocyclic Chemistry Ii: a Review of the Literature 1982-1995. 5: 135-165. DOI: 10.1016/B978-008096518-5.00107-6  0.44
2007 Lounasmaa M, Hanhinen PS. Ajmalinimine is an artifact not an alkaloid Heterocycles. 72: 647-648. DOI: 10.3987/Com-06-S(K)1  0.44
2001 Lounasmaa M, Hanhinen P. The ajmaline group of indole alkaloids. The Alkaloids. Chemistry and Biology. 55: 1-87. PMID 11704984 DOI: 10.1016/S0099-9598(01)55002-6  0.44
2001 Hanhinen P, Lounasmaa M. Revision of the structure of ajmalimine. Journal of Natural Products. 64: 686-7. PMID 11374979 DOI: 10.1021/Np000618M  0.44
2000 Lounasmaa M, Hanhinen P. Interpretation of the formation of nine "artifact indole alkaloids" in the ajmaline/sarpagine series. Journal of Natural Products. 63: 1456-60. PMID 11076580 DOI: 10.1021/Np000206D  0.44
2000 Lounasmaa M, Tolvanen A. Simple indole alkaloids and those with a nonrearranged monoterpenoid unit. Natural Product Reports. 17: 175-91. PMID 10821112 DOI: 10.1039/a809402k  0.44
2000 Lounasmaa M, Berner M, Tolvanen A, Jokela R. Deuterium incorporation into reserpine Heterocycles. 52: 471-474. DOI: 10.3987/Com-99-S28  0.44
1999 Lounasmaa M, Hanhinen P. Effect of C-1, C-2, and C-3 substituents on the conformational equilibrium of indolo[2,3-a] quinolizidines Heterocycles. 51: 2227-2254. DOI: 10.3987/Rev-99-519  0.44
1999 Lounasmaa M, Hanhinen P. Conformational study of geissoschizine isomers and their model compounds Heterocycles. 51: 649-670. DOI: 10.3987/Rev-98-512  0.44
1999 Berner M, Tolvanen A, Lounasmaa M, Jokela R. Novel zinc mediated indole ring opening of isoreserpine Heterocycles. 51: 2941-2948. DOI: 10.3987/Com-99-8718  0.44
1999 Hanhinen P, Putkonen T, Lounasmaa M. General strategies in the preparation of antirhine-type indole alkaloids Heterocycles. 51: 1827-1842. DOI: 10.3987/Com-99-8550  0.44
1999 Lounasmaa M, Belle DD, Tolvanen A. Total synthesis of (±)-deethyleburnamonine and vindeburnol (RU 24722) with the corresponding nitriles as starting material Heterocycles. 51: 1125-1130. DOI: 10.3987/Com-99-8486  0.44
1999 Lounasmaa M, Berner M, Tolvanen A. Substituent effects on the rate of acid-catalysed epimerization of indolo[2,3-a]quinolizidines Heterocycles. 50: 243-250. DOI: 10.3987/Com-98-S(H)33  0.44
1999 Hanhinen P, Putkonen T, Lounasmaa M. Direct introduction of nucleophilic carbanions to the γ-position of N(a)-BOC-protected N(b)-tryptophylpyridinium salts without electron withdrawing substituents at the β-position Heterocycles. 51: 785-794. DOI: 10.3987/Com-98-8444  0.44
1999 Lounasmaa M, Berner M, Månsus A, Tolvanen A. Model studies on interconversion of roxburghine-type alkaloids. Acid- catalysed epimerization of C-12B substituted indolo[2,3-a]quinolizidine derivatives Heterocycles. 51: 501-504. DOI: 10.3987/Com-98-8434  0.44
1998 Lounasmaa M, Hanhinen P. Biomimetic formation and interconversion in the heteroyohimbine series Heterocycles. 48: 1483-1492. DOI: 10.3987/Rev-98-498  0.44
1998 Lounasmaa M, Berner M, Tolvanen A. Acid-catalysed C-3 epimerization of reserpine and other indolo[2,3-a]quinolizidines Heterocycles. 48: 1275-1290. DOI: 10.3987/Rev-98-497  0.44
1998 Lounasmaa M, Jokela R, Laine C, Hanhinen P. Preparation of (±)-hirsutine and (±)-3-isocorynantheidine Heterocycles. 49: 445-450. DOI: 10.3987/Com-98-S9  0.44
1998 Lounasmaa M, Hanhinen P. Biogenetic formation of sarpagine/ajmaline type indole alkaloids Planta Medica. 64: 572-574. DOI: 10.1055/S-2006-957518  0.44
1998 Lounasmaa M, Hanhinen P, Westersund M. Chapter 2 The Sarpagine Group of Indole Alkaloids Alkaloids: Chemistry and Biology. 52: 103-195. DOI: 10.1016/S0099-9598(08)60026-7  0.44
1998 Lounasmaa M, Din Belle D, Tolvanen A. First total synthesis of 195-hydroxytacamine, an indole alkaloid from Tabernaemontana eglandulosa, and of its C-19 stereoisomer, 19R- hydroxytacamine Tetrahedron. 54: 14845-14858. DOI: 10.1016/S0040-4020(98)00921-1  0.44
1998 Lounasmaa M, Berner M, Brunner M, Suomalainen H, Tolvanen A. Acid-catalysed epimerization of indolo[2,3-α]quinolizidine derivatives: Role of the nitrogen lone pairs in the mechanism Tetrahedron. 54: 10205-10216. DOI: 10.1016/S0040-4020(98)00614-0  0.44
1998 Lounasmaa M, Din Belle D, Tolvanen A. Easy access to the voaketone ring system Tetrahedron. 54: 4673-4678. DOI: 10.1016/S0040-4020(98)00184-7  0.44
1998 Lounasmaa M, Karinen K, Din Belle D, Tolvanen A. Controlled epimerization of indolo[2,3-a]quinolizidine derivatives: An efficient total synthesis of(±)-tacamonine Tetrahedron. 54: 157-164. DOI: 10.1016/S0040-4020(97)10266-6  0.44
1998 Lounasmaa M. Synthetic studies in the field of indole alkaloids. Part 3 Current Organic Chemistry. 2: 63-90.  0.44
1997 Jokela R, Lounasmaa M. p-Terphenyl- and phenanthraquinone derivatives: an NMR study. Planta Medica. 63: 381-3. PMID 17252400 DOI: 10.1055/S-2006-957712  0.44
1997 Jokela R, Lounasmaa M. Complete 1H- and 13C-NMR spectral data of piloquinone, a 9,10-phenanthrenequinone derivative from Streptomyces pilosus. Planta Medica. 63: 85-6. PMID 17252332 DOI: 10.1055/S-2006-957613  0.44
1997 Lounasmaa M, Karinen K, Tolvanen A. Synthesis and conformational study of indolo[2,3-a]-quinolizidine-3-ethan-1'-ols: Intermediates for the synthesis of deplancheine and flavopereirine Heterocycles. 45: 1397-1404. DOI: 10.3987/Com-97-7816  0.44
1997 Lounasmaa M, Karinen K, Belle DD, Tolvanen A. Lactone formation as an aid in the NMR characterization of two 3-(1'-hydroxyethyl)indolo[2,3-a]quinolizidine-1-carboxylates: Intermediates for the stereoselective synthesis of tacamine-type indole alkaloids Heterocycles. 45: 361-366. DOI: 10.3987/Com-96-7675  0.44
1997 Lounasmaa M, Miettinen J, Hanhinen P, Jokela R. Short synthesis of (±)-hirsutine: Direct addition of dimethyl malonate anion to a 1,4-conjugate iminium salt of appropriate 3-ethylindolo[2,3-a]quinolizidine Tetrahedron Letters. 38: 1455-1458. DOI: 10.1016/S0040-4039(97)00056-7  0.44
1997 Lounasmaa M, Miikki L, Tolvanen A. Acid-Catalysed epimerization of indolo[2,3-a]quinolizidines 1-, 2- and 3-monosubstituted alkyl derivatives Tetrahedron. 53: 5349-5356. DOI: 10.1016/S0040-4020(97)00197-X  0.44
1997 Lounasmaa M, Hanhinen P. Formation of 3-ISO-19-epicathenamine, isolated as its cyano adduct 21α-cyano-3-isorauniticine Heterocycles. 45: 1529-1536.  0.44
1997 Lounasmaa M, Jokela R, Hanhinen P, Anttila U. Synthesis of (±)-cathenamine and (±)-19-EPI-cathenamine, isolated as their C-21a-cyano derivatives Heterocycles. 45: 779-786.  0.44
1996 Jokela R, Lounasmaa M. A 1H- and 13C-NMR study of seven ajmaline-type alkaloids. Planta Medica. 62: 577-9. PMID 17252506 DOI: 10.1055/S-2006-957980  0.44
1996 Miettinen J, Jokela R, Lounasmaa M. Total syntheses of 10-methoxydihydrocorynantheol and 10-methoxycorynantheidol. Planta Medica. 62: 42-5. PMID 17252407 DOI: 10.1055/S-2006-957794  0.44
1996 Lounasmaa M, Hanhinen P. Claisen orthoester rearrangement in the direct preparation of deplancheine derivatives possessing a malonyl group at C-15 Heterocycles. 43: 1981-1989. DOI: 10.3987/Com-96-7538  0.44
1996 Lounasmaa M, Jokela R, Hanhinen P, Laine C, Anttila U. Preparation and conformational study of deformyl-z- and deformyl-e geissoschizine epimers and Na-Boc derivatives, and their Nb-oxides Heterocycles. 43: 1699-1712. DOI: 10.3987/Com-96-7503  0.44
1996 Lounasmaa M, Hanhinen P, Lipponen S. Short synthetic route to 5,6-dihydroflavopereirine and flavopereirine Heterocycles. 43: 1365-1370. DOI: 10.3987/Com-96-7446  0.44
1996 Jokela R, Lounasmaa M. 1H- and 13C-nmr spectral data of five sarpagine-type alkaloids Heterocycles. 43: 1015-1020. DOI: 10.3987/Com-96-7401  0.44
1996 Lounasmaa M, Hanhinen P, Jokela R. Short synthesis of 14,15-didehydro-E-deplancheine, presumed biosynthetic intermediate in the formation from geissoschizine, of Corynanthé alkaloids missing the three-carbon unit at C-15 Heterocycles. 43: 443-446. DOI: 10.3987/Com-95-7314  0.44
1996 Lounasmaa M, Hanhinen P. Studies on the biomimetic preparation of the sarpagan ring system. Attempts to apply the spontaneous 'biogenetic-type cyclization' of van Tamelen to bond formation between C-5 and C-16 in the corynantheine series Tetrahedron. 52: 15225-15242. DOI: 10.1016/S0040-4020(96)00928-3  0.44
1996 Lounasmaa M, Karinen K, Din Belle D, Tolvanen A. Stereoselective synthesis of methyl 3α-ethyl-1,2,3,4,6,7,12,12bβ-octahydroindolo[2,3-a]quinolizine- 1α-carboxylate: A key intermediate for the preparation of tacamine-type indole alkaloids Tetrahedron Letters. 37: 1513-1516. DOI: 10.1016/0040-4039(96)00052-4  0.44
1996 Din Belle D, Tolvanen A, Lounasmaa M. Total syntheses of tacamide-type indole alkaloids of Tabernaemontana eglandulosa Tetrahedron. 52: 11361-11378. DOI: 10.1016/0040-4020(96)00663-1  0.44
1996 Lounasmaa M, Miikki L, Tolvanen A. Acid-catalysed epimerization of 1-substituted indolo[2,3- a]quinolizidines: Stereoselective routes to cis- and trans- deethyleburnamonine starting from the same ester intermediate Tetrahedron. 52: 9925-9930. DOI: 10.1016/0040-4020(96)00524-8  0.44
1996 Lounasmaa M, Jokela R, Anttila U, Hanhinen P, Laine C. Short synthetic route to (±)-geissoschizine Tetrahedron. 52: 6803-6810. DOI: 10.1016/0040-4020(96)00292-X  0.44
1996 Leskelä T, Vasama K, Härkönen G, Sarkio P, Lounasmaa M. Potential cerium precursors for blue colour in thin film electroluminescent devices grown by atomic layer epitaxy Advanced Materials For Optics and Electronics. 6: 169-174.  0.44
1995 Lounasmaa M, Hanhinen P, Jokela R. Preparation of 17-deoxy-E-isositsirikine cis-Nb-oxides and their use as model compounds Heterocycles. 41: 995-1000. DOI: 10.3987/Com-95-7033  0.44
1995 Lounasmaa M, Jokela R, Hanhinen P, Miettinen J, Salo J. The rhazimanine-bhimberine enigma Journal of Natural Products (Lloydia). 58: 131-133. DOI: 10.1021/Np50115A020  0.44
1995 Belle DD, Tolvanen A, Lounasmaa M. Syntheses of (±)-17α- and (±)-17β-hydroxytacamonine; determination of configuration at C-17 Tetrahedron Letters. 36: 9559-9560. DOI: 10.1016/0040-4039(95)02047-0  0.44
1995 Lounasmaa M, Din Belle D, Tolvanen A. Total synthesis of the indole alkaloid (±)-tacamonine Tetrahedron Letters. 36: 7141-7144. DOI: 10.1016/0040-4039(95)01419-I  0.44
1995 Lounasmaa M, Jokela R, Back M, Hanhinen P, Laine C. Preparation and determination of stereochemical properties of epimeric z-geissoschizine and 19,20-dihydrogeissoschizine acetals Tetrahedron. 51: 11891-11900. DOI: 10.1016/0040-4020(95)00750-3  0.44
1995 Lounasmaa M, Hanhinen P, Jokela R. Claisen orthoester rearrangement in the direct preparation of Z-isositsirikine and Z-geissoschizine derivatives possessing the right oxidation state at C-17 Tetrahedron. 51: 8623-8648. DOI: 10.1016/0040-4020(95)00477-P  0.44
1995 Belle DD, Tolvanen A, Lounasmaa M. Formation of the 1,3-Oxazepine ring system during the oxidation of an alcohol with activated dimethyl sulfoxide Recueil Des Travaux Chimiques Des Pays-Bas. 114: 37-38. DOI: 10.1002/Recl.19951140109  0.44
1995 Lounasmaa M, Halonen M, Jokela R. Total synthesis of Na,O-di-Boc-5β-cyano-Z-geissoschizine and Na-Boc-21α-cyanotetra-hydroalstonine, the latter a synthetic equivalent of Na-Boc-cathenamine Heterocycles. 41: 807-816.  0.44
1995 Halonen M, Jokela R, Lounasmaa M. Transformation of Na-Boc-tetrahydroalstonine to Na-Boc-5β-cyanotetrahydroalstonine, Na-Boc-21α-cyanotetrahydroalstonine, and Na-Boc-3,14-didehydro-tetrahydroalstonine Heterocycles. 41: 353-362.  0.44
1994 Lounasmaa M, Tolvanen A. On the structure of the indole alkaloid ajmalicidine. Planta Medica. 60: 480-1. PMID 17236068 DOI: 10.1055/S-2006-959541  0.44
1994 Hanhinen P, Nurminen T, Jokela R, Lounasmaa M. Preparation and conformational study of Z-isositsirikine model compounds and their cis-Nb-oxides. Determination of the C-16 configuration Heterocycles. 38: 2027-2044. DOI: 10.3987/Com-94-6785  0.44
1994 Jokela R, Halonen M, Lounasmaa M. Synthesis of Na-Boc-5β-cyano-deformyl-E-geissoschizine: A potential synthon in the preparation of sarpagan and ajmalan ring systems Heterocycles. 38: 189-196. DOI: 10.3987/Com-93-6571  0.44
1994 Lounasmaa M, Tamminen T. Chapter 1 The Tropane Alkaloids Alkaloids: Chemistry and Pharmacology. 44: 1-114. DOI: 10.1016/S0099-9598(08)60143-1  0.44
1994 Tirkkonen B, Miettinen J, Salo J, Jokela R, Lounasmaa M. The Claisen rearrangement in the preparation of geissoschizine isomers Tetrahedron. 50: 3537-3556. DOI: 10.1016/S0040-4020(01)87031-9  0.44
1994 Lounasmaa M, Din Belle D, Tolvanen A. Total synthesis of the indole alkaloid (±)-tacamine Tetrahedron Letters. 35: 6151-6154. DOI: 10.1016/0040-4039(94)88102-2  0.44
1994 Tolvanen A, Belle DD, Lounasmaa M. Aldehyde intermediates in the synthesis of tacamine T-type indole alkaloids: Preparation of (±)-apotacamine Helvetica Chimica Acta. 77: 709-715. DOI: 10.1002/Hlca.19940770314  0.44
1993 Lounasmaa M, Jokela R, Halonen M, Miettinen J. Cleavage of the C-20 ethylidene side-chain of deformyl-Z- and deformyl-E-geissoschizine derivatives utilizing the modified Polonovski reaction Heterocycles. 36: 2523-2530. DOI: 10.3987/Com-93-6477  0.44
1993 Jokela R, Lounasmaa M. Complete 1H-nmr spectral assignments of six 3-ethyl indolo[2,3-a]quinolizidine N-oxides. Noe difference spectroscopy applied to conformational analysis Heterocycles. 36: 2373-2382. DOI: 10.3987/Com-93-6473  0.44
1993 Jokela R, Halonen M, Lounasmaa M. Short, stereoselective synthesis of N-Boc-5β-cyanodeformyl-Z-geissoschizine, a prototype of potential synthons in the preparation of sarpagan and ajmalan ring systems Heterocycles. 36: 1115-1126. DOI: 10.3987/Com-92-6299  0.44
1993 Lounasmaa M, Karvinen E. Total synthesis of (±)-eburnaminol and (±)-larutensine Heterocycles. 36: 751-760. DOI: 10.3987/Com-92-6220  0.44
1992 Lounasmaa M, Jokela R, Miettinen J, Halonen M. New, short synthesis of (±)-geissoschizine Heterocycles. 34: 1497-1502. DOI: 10.3987/Com-92-6049  0.44
1992 Lounasmaa M, Jokela R, Tirkkonen B, Miettinen J, Halonen M. Syntheses of (±)-Z-geissoschizol, (±)-3-epi-Z-geissoschizol, (±)-corynantheidol, (±)-dihydrocorynantheol, (±)-3-epi-dihydrocorynantheol and the corresponding corynan-17-oic acid methyl esters Heterocycles. 34: 321-339. DOI: 10.3987/Com-91-5922  0.44
1992 Lounasmaa M, Tolvanen A. Chapter 1 Eburnamine-Vincamine Alkaloids Alkaloids: Chemistry and Pharmacology. 42: 1-116. DOI: 10.1016/S0099-9598(08)60059-0  0.44
1992 Karvinen E, Lounasmaa M. A new short synthesis of (±)-eburnamonine Heterocycles. 34: 1773-1782.  0.44
1991 Lounasmaa M, Tamminen T. Stereoselectivity in the preparation of indolo[2,3-a]quinolizidine Nb-metho-salts Heterocycles. 32: 1527-1535. DOI: 10.3987/Com-91-5740  0.44
1991 Jokela R, Miettinen J, Lounasmaa M. Sodium dithionite reduction of 1-[2-(3-indolyl)ethyl]pyridinium salts: Formation of a 1,2-dihydropyridine derivative via the corresponding 1,4-dihydropyridine derivative Heterocycles. 32: 511-520. DOI: 10.3987/Com-91-5668  0.44
1991 Lounasmaa M, Karvinen E. Easy preparation of indoloquinolizidine enamines Heterocycles. 32: 489-497. DOI: 10.3987/Com-90-5659  0.44
1991 Lounasmaa M, Tamminen T. Stereoselective preparation of indoloquinolizidine N-oxides: Predominant conformations. Tetrahedron. 47: 2879-2894. DOI: 10.1016/S0040-4020(01)87093-9  0.44
1991 Lounasmaa M, Karvinen E. Stereochemical course of the modified polonovski reaction and mercuric acetate oxidation in the preparation of 2-substituted 1,2,3,4,6,7,12,12b-octahydroindolo[2, 3-a]quinolizines Tetrahedron. 47: 6371-6380. DOI: 10.1016/S0040-4020(01)86565-0  0.44
1990 Naaranlahti T, Nordström M, Lapinjoki SP, Huhtikangas A, Lounasmaa M. Isolation of Catharanthus alkaloids by solid-phase extraction and semipreparative HPLC. Journal of Chromatographic Science. 28: 173-4. PMID 2079546 DOI: 10.1093/Chromsci/28.4.173  0.44
1990 Lounasmaa M, Jokela R. Short synthesis of (±)-corynantheidol and (±)-3-epicorynantheidol Heterocycles. 31: 1351-1358. DOI: 10.3987/Com-90-5422  0.44
1990 Lounasmaa M, Tolvanen A. A new synthesis of (±)-vincamine via Oppolzer's aldehyde Journal of Organic Chemistry. 55: 4044-4047. DOI: 10.1021/Jo00300A019  0.44
1990 Lounasmaa M, Jokela R, Tiainen LP. Stereoselective total syntheses of (±)-18,19-dihydrohunterburnine, (±)-10-0-methyl-18, 19-dihydrohunterburnine, (±)-10-hydroxycorynatheidol and (±)-10-methoxycorynantheidol Tetrahedron. 46: 7873-7884. DOI: 10.1016/S0040-4020(01)90085-7  0.44
1990 Lounasmaa M, Jokela R. Short stereoselective synthesis of dl-alloyohimbane and dl-epialloyohimbane Tetrahedron. 46: 615-622. DOI: 10.1016/S0040-4020(01)85442-9  0.44
1990 Lounasmaa M, Jokela R, Mäkimattila P, Tirkkonen B. Stereochemical course of the alkaline decarboalkoxylative cyclization of C(4)- C(5)- and C(4),C(5)-substituted 1-[2-(3-indolyl)ethyl-3-methoxycarbonyl -1,4,5,6-tetrahydropyridines to C(2)-, C(3)- and C(2),C(3)-substituted indolo[2,3-aquinolizidines Tetrahedron. 46: 2633-2650. DOI: 10.1016/S0040-4020(01)82042-1  0.44
1990 Simola LK, Parviainen R, Martinsen A, Huhtikangas A, Jokelat R, Lounasmaa M. Feeding experiments using suspension cultures of Atropa belladonna; limiting steps in the biosynthesis of tropane alkaloids Phytochemistry. 29: 3517-3523. DOI: 10.1016/0031-9422(90)85267-J  0.44
1989 Naaranlahti T, Lapinjoki SP, Huhtikangas A, Toivonen L, Kurtén U, Kauppinen V, Lounasmaa M. Mass Spectral Evidence of the Occurrence of Vindoline in Heterotrophic Cultures of Catharanthus roseus Cells. Planta Medica. 55: 155-7. PMID 17262331 DOI: 10.1055/S-2006-961911  0.44
1989 Lounasmaa M, Jokela R. Stereoregulation of the C(12b)H-C(2)H relationship in the preparation of 2-substituted 1,2,3,4,6,7,12,12b-octahydro-indolo[2,3-a]quinolizines Tetrahedron. 45: 3975-3992. DOI: 10.1016/S0040-4020(01)89256-5  0.44
1989 Lounasmaa M, Jokela R, Tirkkonen B, Tamminen T. Stereoregulation in the preparation of 1- and 3- monosubstituted 1,2,3,4,6,7,12,12b-octahydroindolo[2,3-a]quinolizines. Tetrahedron. 45: 7615-7630. DOI: 10.1016/S0040-4020(01)89223-1  0.44
1989 Lounasmaa M, Jokela R. Stereoselective synthesis of dl-18,19-dihydroantirhine and dl-3-epi-18,19-dihydroantirhine Tetrahedron. 45: 7449-7458. DOI: 10.1016/S0040-4020(01)89207-3  0.44
1989 Tamminen T, Jokela R, Tirkkonen B, Lounasmaa M. Indoloquinolizidine iminium species formed under the modified Polonovski reaction conditions Tetrahedron. 45: 2683-2692. DOI: 10.1016/S0040-4020(01)80098-3  0.44
1989 Jokela R, Lounasmaa M. Easy functiohalination of C(17) in the desethylebunnamonine series Tetrahedron. 45: 303-308. DOI: 10.1016/0040-4020(89)80057-2  0.44
1989 Lounasmaa M, Galambos J. Indole alkaloid production in Catharanthus roseus cell suspension cultures Fortschritte Der Chemie Organischer Naturstoffe. 55: 89-115.  0.44
1988 Simola LK, Nieminen S, Huhtikangas A, Ylinen M, Naaranlahti T, Lounasmaa M. Tropane alkaloids from Atropa belladonna, part II. Interaction of origin, age, and environment in alkaloid production of callus cultures Journal of Natural Products. 51: 234-242. DOI: 10.1021/Np50056A007  0.44
1988 Jokela R, Karvinen E, Tolvanen A, Lounasmaa M. Synthesis of compounds in the eburnamonine-homoeburnamonine series Tetrahedron. 44: 2367-2375. DOI: 10.1016/S0040-4020(01)81746-4  0.44
1987 Huhtikangas A, Lehtola T, Lapinjoki S, Lounasmaa M. Specific radioimmunoassay for vincristine. Planta Medica. 53: 85-7. PMID 3575514 DOI: 10.1055/S-2006-962628  0.44
1987 Lapinjoki S, Veräjänkorva H, Heiskanen J, Niskanen M, Huhtikangas A, Lounasmaa M. Immunoanalytical methods for screening vindoline from Catharanthus roseus cell cultures. Planta Medica. 53: 565-7. PMID 3444865 DOI: 10.1055/S-2006-962813  0.44
1987 Tolvanen A, Lounasmaa M. Nitrogen assisted acetal ring cleavage. Part III. Synthesis and reactions of 1-formyl-3,4,6,7,12,12b-hexahydroindolo[2,3-a]quinolizine1 1 For Part II, see Ref. 1. Tetrahedron. 43: 1123-1127. DOI: 10.1016/S0040-4020(01)90050-X  0.44
1987 Jokela R, Lounasmaa M. A mild novel synthesis of simple 1-oxo-β-carbolines Tetrahedron. 43: 6001-6006. DOI: 10.1016/S0040-4020(01)87806-6  0.44
1987 Lounasmaa M, Karvinen E, Koskinen A, Jokela R. Novel applications of the modified polonovski reaction-IX. A new route to wenkert's enamine Tetrahedron. 43: 2135-2146. DOI: 10.1016/S0040-4020(01)86795-8  0.44
1987 Naaranlahti T, Nordström M, Huhtikangas A, Lounasmaa M. Determination of Catharanthus alkaloids by reversed-phase high-performance liquid chromatography Journal of Chromatography A. 410: 488-493. DOI: 10.1016/S0021-9673(00)90083-9  0.44
1987 Jokela R, Juntunen A, Lounasmaa M. Elaboration of the ethylidene side chain in the synthesis of indole alkaloids: Preparation of (±)-deplancheine and its analogues Planta Medica. 53: 386-388.  0.44
1986 Lapinjoki SP, Veräjänkorva HM, Huhtikangas AE, Lehtola TJ, Lounasmaa M. An enzyme-linked immunosorbent assay for the antineoplastic agent vincristine. Journal of Immunoassay. 7: 113-28. PMID 3734107 DOI: 10.1080/01971528608063049  0.44
1986 Lounasmaa M, Tolvanen A. 1H NMR data of monoterpenoid indole alkaloids Heterocycles. 24: 3229-3281. DOI: 10.3987/R-1986-11-3229  0.44
1986 Lounasmaa M, Jokela R, Huhtikangas A, Lapinjoki S, Heiskanen J, Lehtola T, Naaranlahti T. Synthesis of protein complexes of bis-indole alkaloids from Catharanthus roseus Heterocycles. 24: 1355-1360. DOI: 10.3987/R-1986-05-1355  0.44
1986 Lounasmaa M, Jokela R. Stereoselective total synthesis of (±)-3-iso-19-epiajmalicine Tetrahedron Letters. 27: 2043-2044. DOI: 10.1016/S0040-4039(00)84444-5  0.44
1986 Lounasmaa M, Somersalo P. Studies on the synthesis of indole alkaloids of condylocarpine type. C-4 alkylation of the 1-alkyl-3-(hydrazono)-2-piperidone system Tetrahedron. 42: 1501-1509. DOI: 10.1016/S0040-4020(01)87370-1  0.44
1986 Lounasmaa M, Jokela R. A new formal total synthesis oF (±)-vincamine Heterocycles. 24: 1663-1665. DOI: 10.1002/Chin.198645327  0.44
1986 Lounasmaa M, Tolvanen A. Nitrogen assisted acetal ring cleavage. Part II. Preparation of synthons for eburnamine-vincamine alkaloids Heterocycles. 24: 1279-1284. DOI: 10.1002/Chin.198641328  0.44
1986 Lounasmaa M, Tolvanen A. Nitrogen assisted enol ether formation Heterocycles. 24: 651-654. DOI: 10.1002/Chin.198640187  0.44
1986 Lounasmaa M, Somersalo P. The condylocarpine group of indole alkaloids Fortschritte Der Chemie Organischer Naturstoffe. 27-56.  0.44
1986 Lounasmaa M, Koskinen A, O'Connell J. NMR studies of alkaloids. Assignment of the configuration at C(20) in tubotaiwine (dihydrocondylocarpine) Helvetica Chimica Acta. 69: 1343-1348.  0.44
1986 Jokela R, Taipale T, Ala-Kaila K, Lounasmaa M. Heteroyohimbine alkaloid synthesis Heterocycles. 24: 2265-2271.  0.44
1985 Lounasmaa M, Jokela R, Tolvanen A, Kan SK. A 400 MHz 1H-NMR Study of Seven Sarpagine-Type Alkaloids. Planta Medica. 51: 519-21. PMID 17345276 DOI: 10.1055/S-2007-969581  0.44
1985 Lounasmaa M, Jokela R, Tamminen (née Ranta) T. Novel applications of the modified polonovski reaction - VII preparation of isoquinuclidines Tetrahedron Letters. 26: 801-802. DOI: 10.1016/S0040-4039(00)89141-8  0.44
1984 Feng XZ, Kan C, Husson HP, Potier P, Kan SK, Lounasmaa M. Kopsoffine: A new dimeric indole alkaloid of pleiomutine type from Kopsia officinalis Journal of Natural Products. 47: 117-122. DOI: 10.1021/Np50031A016  0.44
1983 Lounasmaa M, Holmberg C, Langenskiöld T. Une synthese efficace de la chalcostrobamine et de la strobamine; alcaloides tropaniques de Knightia strobilina Journal of Natural Products. 46: 429-430. DOI: 10.1021/Np50027A024  0.44
1983 Koskinen A, Lounasmaa M. Novel applications of the modified polonovski reaction - V1 silyl enolates as nucleophilic alkylating reagents Tetrahedron Letters. 24: 1951-1952. DOI: 10.1016/S0040-4039(00)81814-6  0.44
1983 Koskinen A, Lounasmaa M. Regiospecific functionalisation of carbon atoms α to heterocyclic nitrogen Tetrahedron. 39: 1627-1633. DOI: 10.1016/S0040-4020(01)88573-2  0.44
1983 Lounasmaa M, Ranta T. Preparation of indoloquinolizidine derivatives through pyridine pseudobases Heterocycles. 20: 1-4. DOI: 10.1002/Chin.198325241  0.44
1983 Koskinen A, Lounasmaa M. Mild general synthesis of 4-substituted piperidines Journal of the Chemical Society, Chemical Communications. 821-822.  0.44
1983 Langenskiöld T, Lounasmaa M. Novel applications of the modified Polonovski reaction - IV preparation of (±)-hygrine and (±)-N-methylruspolinone Heterocycles. 20: 671-675.  0.44
1983 Koskinen A, Somersalo P, Lounasmaa M. NMR spectroscopic studies of tryptophan derivatives Heterocycles. 20: 557-561.  0.44
1983 Koskinen A, Lounasmaa M. 13C NMR spectral analysis of α-aminonitriles Heterocycles. 20: 563-569.  0.44
1983 Koskinen A, Lounasmaa M. The sarpagine ajmaline group of indole alkaloids Fortschritte Der Chemie Organischer Naturstoffe. 267-346.  0.44
1982 Koskinen A, Lounasmaa M. Biogenesis of the ajmaline type alkaloids. Planta Medica. 45: 248-9. PMID 17396924 DOI: 10.1055/S-2007-971385  0.44
1982 Henriques A, Kan C, Chiaroni A, Riche C, Husson HP, Kan SK, Lounasmaa M. New dimeric indole alkaloids from Stenosolen heterophyllus: Structure determinations and synthetic approach Journal of Organic Chemistry. 47: 803-811. DOI: 10.1021/Jo00344A011  0.44
1982 Lounasmaa M, Koskinen A. Indoloquinolizidine synthesis. Stereochemistry and mechanism of cyclisation Tetrahedron Letters. 23: 1489-1492. DOI: 10.1016/S0040-4039(00)87140-3  0.44
1982 Lounasmaa M, Koskinen A. Novel applications of the modified polonovski reaction. A biomimetic synthesis of quinuclidines Tetrahedron Letters. 23: 349-352. DOI: 10.1016/S0040-4039(00)86828-8  0.44
1982 Jokela R, Lounasmaa M. Total synthesis of (±)-desmethylhexahydrovallesiachotaminelactones Tetrahedron. 38: 1015-1018. DOI: 10.1016/0040-4020(82)85081-3  0.44
1982 Lounasmaa M, Nemes A. The synthesis of bis-indole alkaloids and their derivatives Tetrahedron. 38: 223-243. DOI: 10.1016/0040-4020(82)80002-1  0.44
1981 Uusvuori R, Lounasmaa M. 13-C NMR data of 3-isoajmalicine and 19-epiajmalicine. Planta Medica. 41: 406-7. PMID 17401865 DOI: 10.1055/s-2007-971737  0.44
1981 Feng XZ, Kan C, Husson HP, Potier P, Kan SK, Lounasmaa M. Nouveaux alcaloides indoliques dimeres de type voacamine extraits d'Ervatamia hainanensis Journal of Natural Products. 44: 670-675. DOI: 10.1021/Np50018A008  0.44
1981 Lounasmaa M, Langenskiöld et Carl Holmberg T. Une synthese efficace et rapide de l'isobellendine, alcaloide ℘-pyranotropanique de bellendena montana Tetrahedron Letters. 22: 5179-5180. DOI: 10.1016/S0040-4039(01)92452-9  0.44
1981 Kan C, Husson HP, Kan SK, Lounasmaa M. Determination of structures by 1H NMR at 400 MHz: Albifloranine, a new alkaloid from Tabernaemontana albiflora | DETERMINATION DE STRUCTURES PAR RMN DU 1H A 400 MHz: ALBIFLORANINE, UN NOUVEL ALCALOIDE DE TABERNAEMONTANA ALBIFLORA Planta Medica. 41: 72-74.  0.44
1981 Uusvuori R, Lounasmaa M. 13C NMR data of 3-isoajmalicine and 19-epiajmalicine Planta Medica. 41: 406-407.  0.44
1981 Kan C, Husson HP, Kan SK, Lounasmaa M. Determination of structures by 1H NMR at 400 MHz: Two new alkaloids from Tabernaemontana albiflora | DETERMINATION DE STRUCTURES PAR RMN DU 1H A 400 MHz: DEUX NOUVEAUX ALCALOIDES DE TABERNAEMONTANA ALBIFLORA Planta Medica. 41: 195-197.  0.44
1980 Kan C, Husson HP, Jacquemin H, Kan SK, Lounasmaa M. Determination de structures par RMN du 1H A 400 MH : Alcaloides de tabernaemontana albiflora Tetrahedron Letters. 21: 55-58. DOI: 10.1016/S0040-4039(00)93623-2  0.44
1980 Kan C, Husson HP, Kan SK, Lounasmaa M. Determination de structures par RMN du 1H A 400 MHz: Quatre nouveaux alcaloides de Tabernaemontana albiflora Tetrahedron Letters. 21: 3363-3366. DOI: 10.1016/S0040-4039(00)78689-8  0.44
1980 Lounasmaa M, Kan SK. A 400 mhz 1H NMR study of the eight basic heteroyohimbine alkaloids Tetrahedron. 36: 1607-1611. DOI: 10.1016/S0040-4020(01)83129-X  0.44
1980 Lounasmaa M, Pusset J, Sévenet T. Benzyl-2 pseudotropanes et dihydro γ-pyranotropanes, alcaloïdes de Knightia strobilina Phytochemistry. 19: 953-955. DOI: 10.1016/0031-9422(80)85145-4  0.44
1980 Lounasmaa M, Pusset J, Sévenet T. Benzyl-2 tropanes et γ-pyranotropanes, alcaloïdes de Knightia strobilina Phytochemistry. 19: 949-952. DOI: 10.1016/0031-9422(80)85144-2  0.44
1979 Lounasmaa M. Chemical ionisation mass spectrometry of phloroglucinol derivatives from the ferns of genus Dryopteris | SPECTROMETRIE DE MASSE EN IONISATION CHIMIQUE DES DERIVES PHLOROGLUCINOLIQUES DES FOUGERES DU GENRE DRYOPTERIS Planta Medica. 37: 151-155.  0.44
1978 Huhtikangas A, Huurre A, Lounasmaa M. Studies on the biosynthetic origin of the acyl side chains of Dryopteris fern constituents Planta Med.. 34: 397-402. DOI: 10.1055/S-0028-1097469  0.44
1978 Lounasmaa M, Massiot G. 1H nuclear magnetic resonance spectral analysis of some Knightia deplanchei alkaloids Planta Med.. 34: 66-72. DOI: 10.1055/S-0028-1097416  0.44
1978 Lounasmaa M, Jokela R. Synthetic studies in the alkaloid field - XII Vallesiachotamine models Tetrahedron Letters. 19: 3609-3612. DOI: 10.1016/S0040-4039(01)95008-7  0.44
1978 Lounasmaa M, Juutinen P, Kairisalo P. Synthetic studies in the alkaloid field-IX1 1 Part VIII. M. Lounasmaa and M. Puhakka. Acta Chem. Scand. B32, 216 (1978). Stereospecific total synthesis of (±)-19,20-dihydro-20-desformyl-20-methoxycarbonyl-vallesiachotamine and its 20-desethyl analogue Tetrahedron. 34: 2529-2532. DOI: 10.1016/0040-4020(78)88382-3  0.44
1978 Lounasmaa M, Merikallio H, Puhakka M. Synthetic studies in the alkaloid field-X1 1 Part IX. M. Lounasmaa, P. Juutinen and P. Kairisalo, Tetrahedron. In press. This work was first presented as a part of a series of lectures by M.L. at the University of Helsinki (Autumn 1977). Preparation and stereostructure determination of several indolo [2,3-a]quinolizine derivatives Tetrahedron. 34: 2995-2999. DOI: 10.1016/0040-4020(78)88022-3  0.44
1978 Lounasmaa M, Jokela R. Synthetic studies in the alkaloid field-VII1 1 VI: M. Lounasmaa and M. Puhakka, Acta. Chem. Scand. B32, 77 (1978). Stereochemistry of 1,2,3,4,6,7,12,12b-octahydroindolo [2,3-a]quinolizine derivatives prepared by alkaline decarboalkoxylative cyclization or acid-induced cyclization of appropriate tetrahydropyridines Tetrahedron. 34: 1841-1844. DOI: 10.1016/0040-4020(78)80219-1  0.44
1978 Lounasmaa M, Hämailä M. Synthetic studies in the alkaloid field-V1 1 IV. M. Lounasmaa and C.-J. Johansson, Tetrahedron 33,113 (1977). This work was first presented as a part of a series of lectures by M.L. at the University of Helsinki (Autumn 1976).. Tetrahedron. 34: 437-442. DOI: 10.1016/0040-4020(78)80029-5  0.44
1978 Lounasmaa M. Phloroglucinol derivatives of the ferns of the genus dryopteris. Analysis of the characteristic phloroglucinol derivatives by the 13C nuclear magnetic resonance | DERIVES PHLOROGLUCINOLIQUES DES FOUGERES DU GENRE DRYOPTERIS. ANALYSE DES DERIVES PHLOROGLUCINOLIQUES CARACTERISTIQUES PAR LA RESONANCE MAGNETIQUE NUCLEAIRE DU 13C Planta Med.. 33: 173-176.  0.44
1977 Rautio M, Lounasmaa M. Mass spectral differentiation of some unsymmetrically substituted isomeric dihydrobarbiturates Acta Chem. Scand.. 31: 528-530. DOI: 10.3891/Acta.Chem.Scand.31B-0528  0.44
1977 Peura P, Lounasmaa M. Nupharopumiline, a new quinolizine alkaloid from Nuphar pumila Phytochemistry. 16: 1122-1123. DOI: 10.1016/S0031-9422(00)86770-9  0.44
1977 Lounasmaa M, Johansson CJ. Synthetic studies in the alkaloid field-IV1 1 III. M. Lounasmaa, C.-J. Johansson and J. Svensson, Acta Chem. Scand. B30, 251 (1976). This work was first presented as a part of a series of lectures by M. L. at the University of Helsinki (Autumn 1975). The sodium dithionite reduction of 1-[2-(3-indolyl)-ethyl]-3-methoxycarbonyl pyridinium bromides Tetrahedron. 33: 113-117. DOI: 10.1016/0040-4020(77)80441-9  0.44
1977 Lounasmaa M, Puri HS, Widén CJ. Phloroglucinol derivatives of Callistemon lanceolatus leaves Phytochemistry. 16: 1851-1852. DOI: 10.1016/0031-9422(71)85118-X  0.44
1976 Puri HS, Widén CJ, Lounasmaa M. Phloroglucinol derivatives in Dryopteris chrysocoma Phytochemistry. 15: 343-344. DOI: 10.1016/S0031-9422(00)89031-7  0.44
1975 Widén CJ, Lounasmaa M, Sarvela J. Phloroglucinol derivatives of eleven Dryopteris species from Japan. Planta Medica. 28: 144-64. PMID 1197418 DOI: 10.1055/S-0028-1097844  0.44
1975 Lounasmaa M, Widén CJ, Tuuf CM, Huhtikangas A. On the phloroglucinol derivatives of Mallotus philippinensis. Planta Medica. 28: 16-31. PMID 1178784 DOI: 10.1055/s-0028-1097825  0.44
1975 Lounasmaa M, Wovkulich PM, Wenkert E. Structures of some Knightia deplanchei alkaloids Journal of Organic Chemistry. 40: 3694-3697.  0.44
1975 Lounasmaa M. Minor alkaloids of Knightia deplanchei | SUR LES ALCALOIDES MINEURS DE KNIGHTIA DEPLANCHEI Planta Medica. 27: 83-88.  0.44
1974 Lounasmaa M, Widén CJ, Huhtikangas A. Phloroglucinol derivatives of Hagenia abyssinica. III. Reductive alkaline cleavages of kosontoxin and protokosin, and of aspidin BB (Dryopteris assimilis). Acta Chemica Scandinavica. Series B: Organic Chemistry and Biochemistry. 28: 1209-18. PMID 4462359 DOI: 10.3891/Acta.Chem.Scand.28B-1209  0.44
1974 Lounasmaa M, Widén CJ, Huhtikangas A. Phloroglucinol derivatives of Hagenia abyssinica. II. The structure determination of kosotoxin and protokosin. Acta Chemica Scandinavica. Series B: Organic Chemistry and Biochemistry. 28: 1200-8. PMID 4462358 DOI: 10.3891/Acta.Chem.Scand.28B-1200  0.44
1974 Lounasmaa M, Johansson CJ. Synthesis of two tropane alkaloids isolated from Knightia deplanchei Tetrahedron Letters. 15: 2509-2512. DOI: 10.1016/S0040-4039(01)93191-0  0.44
1973 Lounasmaa M. Mass spectral studies on some Dryopteris phloroglucinol derivatives. Planta Medica. 24: 148-57. PMID 4765453 DOI: 10.1055/s-0028-1099482  0.44
1973 Tryon R, Widén CJ, Huhtikangas A, Lounasmaa M. Phloroglucinol derivatives in Dryopteris parallelogramma and D. patula Phytochemistry. 12: 683-687. DOI: 10.1016/S0031-9422(00)84464-7  0.44
1973 Widen CJ, Faden RB, Lounasmaa M. The phloroglucides of nine Dryopteris species from Kenya and of D. oligodonta (Desv.) Pic. Serm. and D. 'dilatata' from the Canary Islands | DIE PHLOROGLUCIDE VON NEUN DRYOPTERIS ARTEN AUS KENYA SOWIE DER D. OLIGODONTA (DESV.) PIC. SERM. UND D. 'DILATATA' VON DEN CANARISCHEN INSELN Helvetica Chimica Acta. 56: 2125-2151.  0.44
1972 Lounasmaa M, Karjalainen A, Widén CJ, Huhtikangas A. Mass spectral studies on some naturally occurring phloroglucinol derivatives. 3. The mass spectra of some mono- and bicyclic phloroglucinol derivatives from rhizomes of different Dryopteris species. Acta Chemica Scandinavica. 26: 89-101. PMID 5021922  0.44
1969 Lounasmaa M, Zylber J. [Isolation and structure of hydroxy-4 piloquinone, second phenanthrenequinone of Streptomyces pilosus]. Bulletin De La SociéTé Chimique De France. 9: 3100-3. PMID 5387392  0.44
1968 Lounasmaa M. Sur les reactions des quinones avec l'anhydride acétique en présence d'acétate de sodium - III. Sur les réactions de la 2,6-diméthoxy-p-benzoquinone Tetrahedron Letters. 9: 2392. DOI: 10.1016/S0040-4039(00)76137-5  0.44
1968 Lounasmaa M. Sur les reactions des quinones avec l'anhydride acetique en presence d'acetate de sodium. Partie III. Sur les reactions de la 2,6-dimethoxy-p-benzoquinone Tetrahedron Letters. 9: 91-96.  0.44
1967 Das BC, Lounasmaa M, Tendille C, Lederer. The structure of the plastoquinones B and C. Biochemical and Biophysical Research Communications. 26: 211-5. PMID 6030266  0.44
1966 Gripenberg J, Lounasmaa M. Fungus pigments. 18. The structure of "dihydroisothelephoric acid hexaacetate". Acta Chemica Scandinavica. 20: 2202-6. PMID 5966870  0.44
1965 Das BC, Lounasmaa M, Tendille C, Lederer E. Mass spectrometry of plastoquinones. The structure of the plastoquinones B,C and D. Biochemical and Biophysical Research Communications. 21: 318-22. PMID 5865499  0.44
1964 LOUNASMAA M, RUNEBERG L. INTERACTION BETWEEN PHLOROBUTYROPHENONE DERIVATIVES AND ENERGY TRANSFER BLOCKING AGENTS IN MITOCHONDRIA. Annales Medicinae Experimentalis Et Biologiae Fenniae. 42: 168-72. PMID 14239504  0.44
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