良性前列腺增生(BP H )的药物治疗和手术治疗(TURP)是目前主要治疗手段之一。5-α还原酶抑制剂(度他雄胺)在同类药物治疗中可以更有效减小前列腺体积,改善下尿路症状[1]。在围手术期及TURP术后应用可以减少术中出血量及术后血尿发生率,...良性前列腺增生(BP H )的药物治疗和手术治疗(TURP)是目前主要治疗手段之一。5-α还原酶抑制剂(度他雄胺)在同类药物治疗中可以更有效减小前列腺体积,改善下尿路症状[1]。在围手术期及TURP术后应用可以减少术中出血量及术后血尿发生率,为前列腺增生的综合治疗提供了新的临床治疗思路。展开更多
Aim To synthesize dutasteride. Methods The target compound was synthesized from pregnenolol via eight steps, including esterification, oxidation, hydrolysis, then oxidative ring-opening, cyclization, reduction, oxidiz...Aim To synthesize dutasteride. Methods The target compound was synthesized from pregnenolol via eight steps, including esterification, oxidation, hydrolysis, then oxidative ring-opening, cyclization, reduction, oxidization and finally acylation. Results The structure of the target molecule was identified by ^1H NMR, ^13C NMR and element analysis. The overall yield was 31.5%. Conclusion The effects of different reaction conditions on the yield of product in each step have been investigated and the optimal reaction conditions have been established.展开更多
文摘Aim To synthesize dutasteride. Methods The target compound was synthesized from pregnenolol via eight steps, including esterification, oxidation, hydrolysis, then oxidative ring-opening, cyclization, reduction, oxidization and finally acylation. Results The structure of the target molecule was identified by ^1H NMR, ^13C NMR and element analysis. The overall yield was 31.5%. Conclusion The effects of different reaction conditions on the yield of product in each step have been investigated and the optimal reaction conditions have been established.