Asymmetric Strecker reaction of γ-keto acids. Facile entry to α-substituted and α,γ-disubstituted glutamic acids
作者:Guozhi Tang、Hongqi Tian、Dawei Ma
DOI:10.1016/j.tet.2004.07.100
日期:2004.11
The Strecker reaction of γ-keto acid derived sodium salts with (S)-phenylglycinol followed by treatment of the resultant α-amino nitriles with methanolic HCl and heating at 200 °C give bicyclic lactones 11 and 12. Hydrolysis and subsequent debenzylation of 11 and their alkylation products 17 furnish α-substituted and α,γ-disubstituted glutamic acids.
γ-酮酸衍生的钠盐与(S)-苯基甘醇的Strecker反应,然后用HCl甲醇处理所得的α-氨基腈,并在200°C加热,得到双环内酯11和12。11及其烷基化产物17的水解和随后的脱苄基作用提供了α-取代的和α,γ-二取代的谷氨酸。