[EN] SYNTHESIS OF (+) AND (-) 1 -(5,5-DIPHENYLTETRAHYDROFURAN-3- YL)-N,N-DIMETHYLMETHANAMINE, (+) AND (-) 1-(2,2-DIPHENYLTETRAHYDROFURAN-3-YL)-N,N- DIMETHYLMETHANAMINE AND (+) AND (-) 1-(2,2- DFFHENYLTETRAHYDROFURAN-3-YL)-N-METIHYLMETHANAMINE<br/>[FR] SYNTHÈSE DE (+)- ET (-)-1-(5,5-DIPHÉNYLTÉTRAHYDROFURAN-3-YL)-N,N-DIMÉTHYLMÉTHANAMINE, DE (+)- ET (-)-1-(2,2-DIPHÉNYLTÉTRAHYDROFURAN-3-YL)-N,N-DIMÉTHYLMÉTHANAMINE ET DE (+)- ET (-)-1-(2,2-DIPHÉNYLTÉTRAHYDROFURAN-3-YL)-N-MÉTHYLMÉTHANAMINE
申请人:ANAVEX LIFE SCIENCES CORP
公开号:WO2013008044A1
公开(公告)日:2013-01-17
The current invention covers the synthesis of (+) and (-) l-(5,5-diphenyItetrahydrofuran-3- yl)-N,N-dimethylmethanamine [(±)1] and [(-)1] respectively, including their pharmacologically acceptable acid addition salts. The new products can be synthesized starting from 5,5-diphenyltetrahydrofuran-2(3H)-one (4) after insertion of an aldehyde group in the α-position, reduction to the prochiral 3-(hydroxymethyl)-1, 1-diphenylbutane-1,4-diol (6), chemoenzymatic desymmetrization using the enzyme Amano Lipase PS30, tosylation, intramolecular nucleophilic attack, hydrolysis, reaction with trifluoromethanesulfonic anhydride and substitution by dimethylamine, thus producing (+) 1-(5,5-diphenyl- tetrahydrofuran-3-yl)-N,N-dimethylmethanamine [(+)1]. Protection of the product of the chemoenzymatic desymmetrization with tert-butyldimethylsilyl chloride, hydrolysis, tosylation, intramolecular nucleophilic attack, removal of tert-butyldimethylsilyl group, reaction with trifluoromethanesulfonic anhydride and substitution by dimethylamine produces (-) 1-(5,5-diphenyltetrahydrofuran-3-yl)-N,N-dimethylmethanamine [(-)1]. It also covers the synthesis of (+) and (-) 1-(2,2-diphenyltetrahydrofuran-3-yl)-N,N- dimethylmethanamine [(+)2] and [(-)2] respectively and (+) and (-) 1-(2,2-diphenyl- tetrahydrofuran-3-yl)-N-methylmethanamine \(+)3] and [(-)3] respectively, including their pharmacologically acceptable acid addition salts. The new products can be synthesized either starting from the reduction of 5-oxo-2,2-diphenyltetrahydrofuran-3-carboxylic acid (13) with LiA1H4, followed by the cyclization of the obtained triol (14) under acidic conditions, reaction with 1S-(-) or1R-(+)camphanic chloride, recrystallization, hydrolysis, reaction with trifluoromethanesulfonic anhydride and substitution by dimethylamine or methylamine, or by the reaction of R-(-) or S-(+) Mandelic acid and acetic acid with racemic 1-(2,2-diphenyltetrahydrofuran-3-yl)-N,N-dimethylmethanamine (2), recrystallization, followed by reaction with an aqueous solution of NaOH. The compounds mentioned in the invention present neuroprotective, antiepileptic and antidepressant activity and can be used as therapeutic agents.
当前发明涵盖了合成(+)和(-)l-(5,5-二苯基四氢呋喃-3-基)-N,N-二甲基甲胺[(±)1]和[(-)1],包括它们的药理学上可接受的酸盐。这些新产品可以从5,5-二苯基四氢呋喃-2(3H)-酮(4)开始合成,在α-位置插入醛基后,还原为前手性3-(羟甲基)-1,1-二苯基丁烷-1,4-二醇(6),使用酶阿曼诺脂肪酶PS30进行化学酶解对称化,进行对甲苯磺酰化,分子内亲核攻击,水解,与三氟甲磺酸酐反应和二甲胺取代反应,从而产生(+)1-(5,5-二苯基-四氢呋喃-3-基)-N,N-二甲基甲胺[(+)1]。使用叔丁基二甲基硅氯化物保护化学酶解对称化产物,水解,对甲苯磺酰化,分子内亲核攻击,去除叔丁基二甲基硅基团,与三氟甲磺酸酐反应和二甲胺取代反应,产生(-)1-(5,5-二苯基四氢呋喃-3-基)-N,N-二甲基甲胺[(-)1]。该发明还涵盖了合成(+)和(-)1-(2,2-二苯基四氢呋喃-3-基)-N,N-二甲基甲胺[(+)2]和[(-)2],以及(+)和(-)1-(2,2-二苯基四氢呋喃-3-基)-N-甲基甲胺[(+)3]和[(-)3],包括它们的药理学上可接受的酸盐。这些新产品可以从5-氧代-2,2-二苯基四氢呋喃-3-羧酸(13)还原为三醇(14),在酸性条件下环化,与1S-(-)或1R-(+)樟脑氯化物反应,再结晶,水解,与三氟甲磺酸酐反应和二甲胺或甲胺取代反应开始合成,或者通过R-(-)或S-(+)苯乙酸和乙酸与外消旋1-(2,2-二苯基四氢呋喃-3-基)-N,N-二甲基甲胺(2)反应,再结晶,然后与氢氧化钠水溶液反应合成。该发明中提及的化合物具有神经保护、抗癫痫和抗抑郁活性,可用作治疗剂。