The invention relates to new pregnene derivatives of the general formula (I), ##STR1## wherein R.sup.1 stands for a C.sub.1-4 alkyl group; R.sup.2 stands for a hydrogen atom or a C.sub.2-4 alkanoyl group; R.sup.3 stands for a hydrogen atom, a hydroxyl group or a C.sub.2-4 alkanoyloxy group; A represents a ring of the general formula (1) ##STR2## or a ring of the general formula (2), ##STR3## wherein R.sup.4 means a hydrogen atom or a methyl group; R.sup.5 stands for a hydroxyl group, a C.sub.2-4 alkanoyloxy group or a C.sub.1-3 alkoxy group; R.sup.6 means a hydroxyl group, a C.sub.2-4 alkanoyloxy group, a C.sub.1-3 alkoxy group, an oxo group or a C.sub.2-3 alkylenedithio group; the dotted line optionally represents one or more additional valence bonds, with the proviso that, when the dotted line between C.sub.9 and C.sub.11 represents an additional valence bond, then R.sup.3 stands for a hydrogen atom; and the wavy line shows that the given substituent can be bound to the carbon atom in two alternative spatial arrangements, as well as to their stereoisomers and the mixture of these stereoisomers. The compounds of the general formula (I) are valuable intermediates for the synthesis of known biologically active 21-hydroxyprogesterone derivatives.
本发明涉及一种新的孕
烯衍
生物,其一般式为(I),其中R1代表C1-4烷基;R2代表
氢原子或C2-4酰基基团;R3代表
氢原子、羟基或C2-4酰
氧基团;A代表一般式(1)的环或一般式(2)的环,其中R4表示
氢原子或
甲基基团;R5代表羟基、C2-4酰
氧基团或C1-3烷
氧基团;R6表示羟基、C2-4酰
氧基团、C1-3烷
氧基团、
氧代基或C2-3烷基二
硫基团;虚线可以选择表示一个或多个额外的价键,但是当C9和C11之间的虚线表示一个额外的价键时,R3代表
氢原子;波浪线表示给定的取代基可以与
碳原子以两种可替代的空间排列方式结合,以及它们的立体异构体和这些立体异构体的混合物。一般式(I)化合物是合成已知的
生物活性21-
羟孕酮衍
生物的有价值的
中间体。