The preparation of several deuterated steroids is described, viz.,(i) the trideuteroacetates of the following alcohols: Δ5,7,9-estratrienol-17β;Δ1,5:10estrienol-3-one-17 (estrone); androstanol-3a; androstanol-3β; an-drostanol-17β; pregnanol-20a; Δ5-pregnenol-3β -one-20; Δ5-pregnenol-3β -one-20-d4-17,21; Δ5-cholestenol-3β; Δ-cholestadienol-3β; ergostanol-3 β; Δ14-ergostenol-3β; Δ22-5-isoergostenol-3a.(ii) Δ5-pregnenol-3 β -one-20-d3-21 acetate; Δ -pregnenol-3 β -one-20-d4-17,21.(iii) androstanone-3-d4,-2,4; cholestanone-3-d4-2,4; Δ8:14-ergostenone-3-d4-2,4; cholestanone- 7-d2-6; androstanone-17-d2-16.From difficulties encountered in the preparation of cholestanone-7-d2-6, it is inferred that 7-ketones enolize less readily than 3-, 17-, or 20-ketones.
描述了几种
氘代类
固醇的制备,即:(i) 以下醇的三
氘代
醋酸酯:Δ
5,7,9-雌
三烯醇-17β;Δ
1,5:10雌甾二烯醇-3-酮-17(
雌酮);雄
甾醇-3α;雄
甾醇-3β;雄
甾醇-17β;孕醇-20α;Δ
5-
孕酮-3β-酮-20;Δ
5-
孕酮-3β-酮-20-二
氘代-17,21;Δ
5-
胆甾醇-3β;Δ-胆甾二烯醇-3β;
麦角甾醇-3β;Δ
14-
麦角甾醇-3β;Δ
22-5-异
麦角甾醇-3α。(ii) Δ
5-
孕酮-3β-酮-20-二
氘代-21
醋酸酯;Δ-
孕酮-3β-酮-20-二
氘代-17,21。(iii) 雄甾酮-3-二
氘代,-2,4;
胆甾酮-3-二
氘代-2,4;Δ
8:14-麦角甾酮-3-二
氘代-2,4;
胆甾酮-7-二
氘代-6;雄甾酮-17-二
氘代-16。从制备
胆甾酮-7-二
氘代-6时遇到的困难推断出,7-酮不像3-、17-或20-酮那样容易发生烯醇化。