One-Pot Synthesis of Aminoenone via Direct Reaction of the Chloroalkyl Enone with NaN3: Rapid Access to Polycyclic Alkaloids
摘要:
A new one-pot procedure for the preparation of aminoenone from chloroalkyl enone and sodium azide was demonstrated. The structure of the presumed triazoline intermediate in this process was confirmed by X-ray analysis for the first time. As the application of this methodology, the synthesis of polycyclic alkaloid hexahydroapoerysopine (1a) was achieved through an efficient synthetic route.
A short and efficient approach to aza-quaternary pyrrolo[1,2-a]azepine 8 and aza-quaternary indolizine 23, as the crucial intermediates for syntheses of stemonamine (1a) and cephalotaxine (1b), has been developed on the basis of the key intramolecular Schmidt reaction of symmetric azido-diones 5 and 18, respectively.
在氮杂-吡咯并[1,2- a ]氮杂8和氮杂-四氮杂吲哚23的短而有效的方法的基础上,已经开发了一种方法,它们是合成stem烯胺(1a)和头孢他辛(1b)的关键中间体。对称叠氮基二酮5和18的关键分子内Schmidt反应。
One-Pot Synthesis of Aminoenone via Direct Reaction of the Chloroalkyl Enone with NaN<sub>3</sub>: Rapid Access to Polycyclic Alkaloids
作者:Yu-Ming Zhao、Peiming Gu、Yong-Qiang Tu、Hai-Jun Zhang、Qing-Wei Zhang、Chun-An Fan
DOI:10.1021/jo101226r
日期:2010.8.6
A new one-pot procedure for the preparation of aminoenone from chloroalkyl enone and sodium azide was demonstrated. The structure of the presumed triazoline intermediate in this process was confirmed by X-ray analysis for the first time. As the application of this methodology, the synthesis of polycyclic alkaloid hexahydroapoerysopine (1a) was achieved through an efficient synthetic route.