Process to produce hexahydronaphthacene derivatives
申请人:Hoffmann-La Roche Inc.
公开号:US04393221A1
公开(公告)日:1983-07-12
There is presented a process for the manufacture of hexahydronaphthacene derivatives of the general formula ##STR1## wherein one of R.sup.1 and R.sup.2 represents a hydrogen atom and the other represents a hydrogen atom or a hydroxy group or R.sup.1 and R.sup.2 together represent a protected oxo group, R.sup.3 represents a hydrogen atom or a hydroxy or acyloxy group and R.sup.4 represents a lower alkyl or esterified carboxy group or a group of the formula ##STR2## wherein R.sup.5 and R.sup.6 together form an oxo group or a protected oxo group and X represents a hydrogen atom or a hydroxy or acyloxy group or ##STR3## in which n stands for 1 or 2 and Y represents a hydrogen atom or an alkyl or acyl group. Also presented are certain of the novel derivatives per se and various novel intermediates in the process.
There is presented a process for the manufacture of hexahydronaphthacene derivatives of the general formula ##STR1## wherein one of R.sup.1 and R.sup.2 represents a hydrogen atom and the other represents a hydrogen atom or a hydroxy group or R.sup.1 and R.sup.2 together represent a protected oxo group, R.sup.3 represents a hydrogen atom or a hydroxy or acyloxy group and R.sup.4 represents a lower alkyl or esterified carboxy group or a group of the formula ##STR2## wherein R.sup.5 and R.sup.6 together form an oxo group or a protected oxo group and X represents a hydrogen atom or a hydroxy or acyloxy group or --(CH.sub.2).sub.n --OY b in which n stands for 1 or 2 and Y represents a hydrogen atom or an alkyl or acyl group. Also presented are certain of the novel derivatives per se and various novel intermediates in the process.
本发明涉及一种制备六氢萘并[1,2-b:5,6-b']二苯蒽衍生物的方法,其一般式为##STR1## 其中R.sup.1和R.sup.2中的一个表示氢原子,另一个表示氢原子或羟基,或者R.sup.1和R.sup.2在一起表示受保护的羰基基团,R.sup.3表示氢原子或羟基或酰氧基基团,R.sup.4表示低碳酰基或酯化的羧基基团或公式##STR2## 中的基团,其中R.sup.5和R.sup.6在一起形成羰基基团或受保护的羰基基团,X表示氢原子或羟基或酰氧基团或--(CH.sub.2).sub.n --OY b ,其中n为1或2,Y表示氢原子或烷基或酰基基团。本发明还提供了某些新型衍生物本身以及该过程中的各种新型中间体。
Process for the preparation of hexahydronaphthacene derivatives
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.