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.
提供一种制备一种通式为##STR1##的六氢
萘蒽衍
生物的过程,其中R.sup.1和R.sup.2中的一个代表氢原子,另一个代表氢原子或羟基,或者R.sup.1和R.sup.2一起代表保护的羟基,R.sup.3代表氢原子或羟基或酰氧基团,R.sup.4代表较低的烷基或酯化的羧基团,或者一个通式为##STR2##的基团,其中R.sup.5和R.sup.6一起形成氧基团或保护的氧基团,X代表氢原子或羟基或酰氧基团,或##STR3##,其中n代表1或2,Y代表氢原子或烷基或酰基团。还提供了该新型衍
生物和该过程中的各种新型中间体。