17β-Thiocarboxylic acid esters of 4-halo-3-oxoandrost-4- enes of the formula:
wherein
X' is fluoro, chloro or bromo;
X2 is fluoro, chloro or hydrogen;
X3 is fluoro, chloro, bromo or hydrogen;
X4 is =C=O or
or may also be
when X3 is chloro;
R is alkyl or 1 to 6 carbon atoms or phenyl or benzyl optionally substituted with one substituent on the phenyl ring chosen from the group consisting of alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms and halo;
R1 is hydrogen or alkanoyl of 2 to 6 carbon atoms when R2 is hydrogen, a-methyl or β-methyl, or OR' and R2 together are isopropylidenedioxy; and
the solid and broken lines between C-1 and C-2 represent a double or a single bond;
are useful as anti-inflammatory agents. They can be prepared by treating the corresponding 17β-carboxylic acid with a suitable base salt of RSH. The 17β-hydroxy compounds can be esterified to produce the 17β-alkanoyloxy compound. The double bond at the 4,5 position can be produced by contacting the corresponding Δ5 compound with a base.
17β-Thiocarboxylic acid esters of 4-halo-3-oxoandrost-4- enes of the formula:
其中
X' 是
氟、
氯或
溴;
X2 是
氟、
氯或氢
X3 是
氟、
氯、
溴或氢;
X4 是 =C=O 或
或也可以是
当 X3 为
氯时;
R 是 1 至 6 个碳原子的烷基或苯基或苄基,可选择被苯基环上的一个取代基取代,该取代基可从 1 至 4 个碳原子的烷基、1 至 4 个碳原子的烷氧基和卤素组成的组中选择;
当 R2 为氢、a-甲基或 β-甲基时,R1 为氢或 2 至 6 个碳原子的烷酰基,或 OR' 和 R2 合在一起为异亚丙基二氧基;以及
C-1 和 C-2 之间的实线和断线代表双键或单键;
可用作抗炎剂。它们可以通过将相应的 17β-
羧酸与合适的 RSH 碱盐进行处理来制备。17β-hydroxy 化合物经酯化后可生成 17β-alkanoyloxy 化合物。4,5 位的双键可通过将相应的 Δ5 化合物与碱接触而生成。