申请人:Eli Lilly and Company
公开号:US04102902A1
公开(公告)日:1978-07-25
An optically active 4-(4-substituted-2,6-dihydroxyphenyl)-6,6-dimethyl-2-norpinanone is reacted with a protonic acid to provide an optical isomer of a cis-1-hydroxy-3-substituted-6,6-dimethyl-6,6a,7,8,10,10a-hexahydro-9H-dibe nzo[b,d]pyran-9-one. Reaction of said norpinanone with a Lewis acid provides an optical isomer of trans-1-hydroxy-3-substituted-6,6-dimethyl-6,6a,7,8,10,10a-hexahydro-9H-di benzo[b,d]pyran-9-one. The optically active norpinanones are prepared by reaction of a 5-substituted-resorcinol with an optically active 6,6-dimethyl-2,4-diacetoxy-2-norpinene or an optically active 6,6-dimethyl-2,2-diacetoxy-3-norpinene, which compounds are derived from optically active .beta.-pinenes.
一种光学活性的4-(4-取代-2,6-二羟基苯基)-6,6-二甲基-2-诺皮酮与质子酸反应,生成一种顺式-1-羟基-3-取代-6,6-二甲基-6,6a,7,8,10,10a-六氢-9H-二苯并[b,d]吡喃-9-酮的光学异构体。所述诺皮酮与路易斯酸反应,提供反式-1-羟基-3-取代-6,6-二甲基-6,6a,7,8,10,10a-六氢-9H-二苯并[b,d]吡喃-9-酮的光学异构体。光学活性的诺皮酮是通过将5-取代-邻苯二酚与光学活性的6,6-二甲基-2,4-二乙酰氧基-2-诺皮烯或光学活性的6,6-二甲基-2,2-二乙酰氧基-3-诺皮烯反应制备的,这些化合物源于光学活性的β-蒎烯。