The synthesis of several 11,18-dioxygenated relatives (VIII and X to XIII) of d,k-progesterone is described. The chemical transformations of the substituents on rings C and D are largely governed by neighbouring group interference. This is shown by the formation of the cyclic ether XVI, by the unusual acetylation of an 11β-hydroxy group (IV VII, VIII), and by the easy ester hydrolysis (X XII), possibly
描述了d,k-
孕酮的几个11,18-双加氧的亲戚(VIII和X至XIII)的合成。环C和D上取代基的
化学转化在很大程度上受邻近基团干扰的支配。通过环状醚XVI的形成,11β-羟基的异常乙酰化(IV VII,VIII)和容易的酯
水解(X XII)(可能通过邻位异构体干预)可以证明这一点。