申请人:Asahi Denka Kogyo K.K.
公开号:US05136061A1
公开(公告)日:1992-08-04
An optically active pentane compound of the general formula (I): ##STR1## wherein R.sub.1 represents a lower alkyl group having 1 to 4 carbon atoms, R.sub.2 represents a lower alkoxycarbonyl group having an alkoxy moiety of 1 to 4 carbon atoms, or a straight-chain or branched alkyl group having 1 to 7 carbon atoms which is unsubstituted or substituted with a hydroxy or protected hydroxy group, A represents a halogen atom, hydroxy, protected hydroxy, or ethynyl group, or a group of the formula ##STR2## B represents a hydrogen atom, hydroxy, protected hydroxy or acyloxy group, D represents a hydrogen atom, or A and B together can form an acetal or epoxy group, A and D together can form an ethylidene group, and B and D together can form a carbon-carbon direct bond, and a chiral central carbon atoms marked with symbols *, # and .thrfore. in said formula (I) alternatively have one of an R-configuration and an S-configuration. Further, intermediates thereof, and a process for manufacturing the above compound are also disclosed.
通用式(I)的具有光学活性的戊烷化合物:其中R.sub.1代表具有1至4个碳原子的低碳基团,R.sub.2代表具有1至4个碳原子的烷氧羰基团,或者代表未取代或取代有羟基或保护羟基的1至7个碳原子的直链或支链烷基团,A代表卤素原子、羟基、保护羟基或乙炔基,或者代表下述结构:B代表氢原子、羟基、保护羟基或酰氧基,D代表氢原子,或者A和B共同形成缩醛或环氧基团,A和D共同形成乙烯基团,B和D共同形成碳-碳直键,在所述式(I)中标记有符号*、#和.thrfore.的手性中心碳原子可以交替具有R构型和S构型。此外,还公开了其中间体以及制备上述化合物的方法。