Total Synthesis and Olfactory Evaluation of 5?,10-Dimethyl-des-A-18-nor-androstan-13?-ol: A Potential Human Pheromone?
作者:Philip Kraft、Kasim Popaj
DOI:10.1002/ejoc.200400577
日期:2004.12
11, the corresponding 14α-isomer 26 was obtained, and the olfactory properties of both are discussed. The high odor thresholds of 11 and 26, as well as the distinct differences in odor with 6−10, make it very unlikely that these des-A-18-nor-androstanols are the underlying odorous principle of 6−10, or that they function as human pheromones. An alternative synthesis of 11 by cyclization of 23 at 0 °C
5β,10-Dimethyl-des-A-18-nor-androstan-13β-ol (Limdrostanol, 11) 被怀疑是潜在的母体类固醇,负责商业气味剂 Timberol® 的有趣的尿液动物、木质嗅觉特性( 6−9),以及俘虏 Norlimbanol® (7) 和 Limbanol® (10),因此可以构成潜在的人类信息素。我们报告了 11 的第一次合成,从用 γ-丁内酯 (16) 处理 1,4-二溴丁烷 (15) 的双格利雅试剂开始,Appel-Lee 溴化所得二醇 17 并消除叔羟基,以及将获得的溴代烯烃 18 转化为相应的三苯基鏻盐 13。将其与 γ,δ-不饱和醛 14 进行 Schlosser-Wittig 反应,依次通过格氏处理甲基丙烯酸乙酯 (19) 和随后所得二甲基甲醇 20 与乙基乙烯基醚 (21) 的 Saucy-Marbet 反应制备。Schlosser-Wittig