Tandem Semipinacol/Schmidt Reaction Leading to a Versatile and Efficient Approach to Azaquaternary Alkaloid Skeletons
作者:Peiming Gu、Yu-Ming Zhao、Yong Qiang Tu、Yufei Ma、Fumin Zhang
DOI:10.1021/ol062116r
日期:2006.11.9
semipinacol/Aube's type intramolecular Schmidt reaction of alpha-siloxy-epoxy-azide has been designed and developed to be a general method for efficient construction of azaquaternary carbon units. As applicable examples, some key tricyclic azaquaternary skeletons incorporated in many important alkaloids, such as cephalotaxine, stemonamine, erythrinan, and homoerythrinan alkaloids, have been constructed
[结构:见正文]设计并开发了TiCl4促进的串联半松果酚/奥伯型α-甲硅烷氧基-环氧叠氮化物的分子内Schmidt反应,是有效构建氮杂季碳单元的通用方法。作为适用的例子,已经构建了掺入许多重要生物碱中的一些关键的三环氮杂四价骨架,例如头孢他辛,塞莫胺,赤藓醇和高赤藓醇生物碱。