Musk or violet? Design, synthesis and odor of seco-derivates of a musky carotol lead
作者:Philip Kraft、Kasim Popaj
DOI:10.1016/j.tet.2006.10.020
日期:2006.12
Li2MnCl4-catalyzed coupling of branched alkyl magnesium chlorides with isovaleryl and 3,3-dimethylbutanoyl chloride, Grignard reaction of the product with ethynyl magnesium bromide, dehydration and transformation into a Grignard reagent, subsequent reaction with acetaldehyde, (E)-selective hydrogenation of the alkynol triple bond with lithium aluminum hydride, and finally pyridinium chlorochromate oxidation
通过六步合成路线,该路线由Li 2 MnCl 4催化的支链烷基氯化镁与异戊酰和3,3-二甲基丁酰氯偶联,产物与乙炔基溴化镁的格氏反应,脱水并转化为格氏试剂,随后与乙醛反应,(ê)用氢化铝锂的炔醇三键的氢化-选择性,最后氯铬酸吡啶鎓氧化,四层空间要求极高靶结构进行了非对映选择性合成。这四个分子靶标被设计为塞科-麝香胡萝卜素前导的结构,以及它们的嗅觉特征在不同程度上融合了紫色和麝香的味道,从而为结构-气味相关性提供了有趣的见识。