申请人:F. HOFFMANN-LA ROCHE & CO.
Aktiengesellschaft
公开号:EP0013577A2
公开(公告)日:1980-07-23
Cyclic compounds of the general formula
wherein one of R' and R2 is hydrogen and the other is hydrogen or hydroxy or R' and R2 taken together are a protected oxo group; R3 is hydrogen, hydroxy or acyloxy; R' is lower alkyl, esterified carboxy or a group of the formula -C(R5, R6) -CH2-X; R' and R'taken together are oxo or protected oxo; X is hydrogen, hydroxy, acyloxy or -(CH2)n-OY; Y is hydrogen, alkyl or acyl and n is 1 or 2; with the proviso that one of R1 and R2 is hydrogen and the other is hydroxy or R1 and R2 taken together are protected oxo when R' is acetoxy and R' is acetyl;
processes for the preparation thereof and intermediates in these processes.
通式的环状化合物,其中R'和R2之一为氢,另一个为氢或羟基,或R'和R2合在一起为受保护的氧代基团;R3为氢、羟基或酰氧基;R'为低级烷基、酯化羧基或式-C(R5,R6)-CH2-X的基团;R'和R'合在一起为氧代或受保护的氧代;X为氢、羟基、酰氧基或-(CH2)n-OY;Y为氢、烷基或酰基,n为1或2;但R1和R2之一为氢,另一个为羟基,或R1和R2合在一起为受保护的氧代,当R'为乙酰氧基,R'为乙酰基时;其制备工艺及其中间体。