Equine Metabolites of Norethandrolone: Synthesis of a Series of 19-Nor-17α-pregnanediols and 19-Nor-17α-pregnanetriols
作者:Andrew R. McKinney、Damon D. Ridley、Peter Turner
DOI:10.1071/ch03018
日期:——
17β-triol (8) and 19-nor-5α,17α-pregnane-3β,16β,17β-triol (9) were prepared from 19-nortestosterone (11) by multistep processes in which the critical step involved Grignard additions to 16-acetoxy-17-ones. The triols (20R)-19-nor-5α,17α-pregnane-3β,17β,20-triol (22) and (20S)-19-nor-5α,17α-pregnane-3β,17β,20-triol (23) were prepared from norethindrone (24) by initial selective A-ring reduction, then subsequent
已合成了一系列 19-nor-17α-孕二醇和 19-nor-17α-孕三醇,并用于确认合成代谢类固醇去甲睾酮的主要马尿代谢物的结构 (1)。19-Nor-5α,17α-pregnane-3α,17β-二醇 (2), 19-nor-5α,17α-pregnane-3β,17β-二醇 (4), 19-nor-5β,17α-pregnane-3α, 17β-二醇 (6) 和 19-nor-5β,17α-pregnane-3β,17β-二醇 (7) 通过立体选择性还原炔诺酮的 3-ene-4-one 制备。19-nor-5α,17α-pregnane-3β,16α,17β-triol (8) 和 19-nor-5α,17α-pregnane-3β,16β,17β-triol (9) 从 19-nortestosterone (11 ) 通过多步过程,其中关键步骤涉及格氏加成到 16-acetoxy-17-ones。三醇