Efficient Synthesis of Differently Protected Lanthionines viaβ-Bromoalanine Derivatives
作者:Xiangming Zhu、Richard R. Schmidt
DOI:10.1002/ejoc.200300336
日期:2003.10
Lanthionines, thioether-linked alanines, are readily available from differently protected β-bromoalanine and cysteine derivatives under phase-transfer conditions at pH 8.5. Racemisation or elimination of starting materials or products was not observed. Also base-sensitive protecting groups, such as, for instance, the Fmoc group, were compatible with this procedure, thus conveniently permitting the
羊毛硫氨酸,硫醚连接的丙氨酸,在 pH 8.5 的相转移条件下很容易从不同保护的 β-溴丙氨酸和半胱氨酸衍生物中获得。未观察到起始材料或产物的外消旋或消除。碱敏感的保护基团,例如 Fmoc 基团,也与该程序兼容,因此可以方便地合成正交保护的羊毛硫氨酸。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)