Synthesis of 4-Amino-2(5<i>H</i>)-furanones through Intra- and Intermolecular Nitrile Addition of Ester Enolates. Construction of Carbon Framework of an Antitumor Antibiotic Basidalin
作者:Tamejiro Hiyama、Haruhito Oishi、Yukari (nee Kusano) Suetsugu、Kiyoharu Nishide、Hiroyuki Saimoto
DOI:10.1246/bcsj.60.2139
日期:1987.6
ester group, deprotection, olefin isomerization and lactonization all in a single operation. The other is base-induced ringclosure of α-acyloxy nitriles. The two methods are applied to construction of the carbon framework of an antitumor antibiotic basidalin.
公开了 4-氨基-2(5H)-呋喃酮的两条新路线。一种是基于乙酸叔丁酯或丙酸叔丁酯的烯醇镁与 O-保护的氰醇的反应,然后进行酸处理,在单一操作中实现酯基的水解、脱保护、烯烃异构化和内酯化。另一种是α-酰氧基腈的碱诱导环合。这两种方法均应用于构建抗肿瘤抗生素basidalin的碳骨架。