📜N-Tert-Butyloxycarbonyl-L-Aspartic Diallyl Ester置于alcalase-Cross-Linked-Enzyme-Aggregates体系中,用 叔丁醇 用作溶剂,化学反应 16.0H,以87%的收率获得boc-L-天冬氨酸 4-烯丙酯
参考文献:A Versatile And Selective Chemo-Enzymatic Synthesis Of β-Protected Aspartic And γ-Protected Glutamic Acid Derivatives
标题:A Versatile And Selective Chemo-Enzymatic Synthesis Of β-Protected Aspartic And γ-Protected Glutamic Acid Derivatives
摘要:Two Versatile,High Yielding,And Efficient Chemo-Enzymatic Methods For The Synthesis Of Beta-Protected Asp And Gamma-Protected Glu Derivatives Using Alcalase Are Described. The First Method Is Based On The Alpha-Selective Enzymatic Hydrolysis Of Symmetrical Aspartyl And Glutamyl Diesters. The Second Method Involving Mixed Diesters Comprises A Three-Step Protocol Using (I) Alpha-Selective Enzymatic Methyl-Esterification,(II) Chemical Beta-Esterification,And Finally (III) Alpha-Selective Enzymatic Methyl Ester Hydrolysis. The Yields Of The Purified Beta-And Gamma-Esters Range From 77% To 91%. (C) 2009 Elsevier Ltd. All Rights Reserved.
Doi:10.1016/j.Tetlet.2009.03.130