Exceptional Stereoselectivity in the Synthesis of 1,3,4-Trisubstituted 4-Carboxy β-Lactam Derivatives from Amino Acids
作者:Paula Pérez-Faginas、Fran O'Reilly、Aisling O'Byrne、Carlos García-Aparicio、Mercedes Martín-Martínez、M. Jesús Pérez de Vega、M. Teresa García-López、Rosario González-Muñiz
DOI:10.1021/ol070533d
日期:2007.4.1
[reaction: see text] The base-promoted cyclization of optically pure N-(p-methoxybenzyl)-N-(2-chloro)propionyl amino acid derivatives resulted in a diastereo- and enantioselective approach to valuable 1,3,4,4-tetrasubstituted beta-lactams. The stereochemical outcome of the reaction is exclusively governed by the configuration of the N-(2-chloro)propionyl moiety.
[反应:见正文]光学纯N-(对甲氧基苄基)-N-(2-氯)丙酰基氨基酸衍生物的碱促进环化反应,形成了对映体和对映体选择性的有价值的1,3,4,4方法-四取代的β-内酰胺。该反应的立体化学结果仅由N-(2-氯)丙酰基部分的构型控制。