Synthese von 11β,21-dihydroxy-6α,16α-dimethyl-1,4-pregnadien-3,20-dion und seines 9-fluor-derivates
作者:K. Kieslich、H. Wieglepp、K. Petzoldt、F. Hill
DOI:10.1016/s0040-4020(01)90715-x
日期:1971.1
6β,16α-Dimethyl-5α-pregnane-3β,5,20,21-tetrol (6a) prepared from 3β-hydroxy-21-acetoxy-16α-methyl-5-pregnene-20-one (1) is oxidized microbiologically only to the 3-keto-compound 7. The desired 21-hydroxy-6α,1,16α-dimethyl-4-pregnene-3,20-dione (10) was formed by chemical oxidation and known reactions. It was hydroxylated microbiologically to the corticosterone compound 12a, which also was obtained
由3β-羟基-21-乙酰氧基-16α-甲基-5-孕烯-20-一(1)制得的6β,16α-二甲基-5α-孕烯3β,5,20,21-四醇(6a)仅在微生物上被氧化通过化学氧化和已知反应形成所需的21-羟基-6α,1,16α-二甲基-4-孕烯-3,20-二酮(10)。将其在微生物学上羟基化为皮质酮化合物12a,其也通过相应的6β-甲基结构的羟基化和随后的酸异构化而获得。微生物脱氢产生11β,21-二羟基-6α,16α-二甲基-1,4-孕二烯-3,20-二酮(13a)。类似的11α-羟基化合物16通过微生物的11α-羟基化和L-脱氢的方法,制备了转化为9-fluor-11β,21-dihydroxy-6α,16α-methyl-1,4-pregnadiene-3,20-dione(22)的化合物。一种混合发酵。