Pyrrolidinones derived from (S )-pyroglutamic acid. Part 1. Conformationally constrained glutamate
作者:Jonathan H. Bailey、David T. Cherry、James Dyer、Mark G. Moloney、Mark J. Bamford、Steve Keeling、R. Brian Lamont
DOI:10.1039/b001999m
日期:——
Novel conformationally constrained pyroglutaminols and pyroglutamates are readily available using an α,β-unsaturated bicyclic lactam as a template for diastereocontrolled enolate additions in the key step; zinc enolates are particularly effective in this regard. The bicyclic ring system both controls and permits the determination of ring stereochemistry. The utility of this methodology is demonstrated by a formal total synthesis of the NMDA receptor agonist, CPAA 11.
使用 α,β-不饱和双环内酰胺作为关键步骤中非对映控制烯醇化物添加的模板,可以轻松获得新型构象受限的焦谷氨酰胺和焦谷氨酸;烯醇锌在这方面特别有效。双环系统既控制又允许测定环立体化学。 NMDA 受体激动剂 CPAA 11 的正式全合成证明了该方法的实用性。