作者:Masanori Kawasaki、Tetsuro Shinada、Makoto Hamada、Yasufumi Ohfune
DOI:10.1021/ol0515154
日期:2005.9.1
[reaction: see text] Total synthesis of the potent AMPA/KA receptor antagonist (-)-kaitocephalin (1) and its three diastereomers has been accomplished. The synthesis features strictly substrate-controlled operations to alpha-formylglutamate 3 starting with alpha-hydroxymethylglutamate 4. The requisite 2R,3S,7R-stereocenters were efficiently constructed by manipulation of stereoselective reactions:
[反应:见正文]已经完成了有效的AMPA / KA受体拮抗剂(-)-解脑磷脂(1)及其三种非对映异构体的全合成。该合成具有严格的底物控制操作,可从α-羟甲基谷氨酸4开始对α-甲酰基谷氨酸3进行操作。通过立体选择性反应的操作,可以有效地构建必需的2R,3S,7R-立体中心:7的二羟基化,然后叠氮化物取代相应的硫代碳酸盐10并与铜介导的酰酰亚胺离子21的烯丙基化反应同时通过AlCl3 / Me2S去除26个中的所有保护基,得到1。