Fully Enzymatic Resolution of Chiral Amines: Acylation and Deacylation in the Presence of<i>Candida antarctica</i>Lipase B
作者:Hilda Ismail、Rute Madeira Lau、Fred van Rantwijk、Roger A. Sheldon
DOI:10.1002/adsc.200800091
日期:2008.7.7
(CaLB)-catalyzed acylation with N-methyl- and N-phenylglycine, as well as analogues having the general formula R1XCH2CO2R2 (R1=Me, Ph; X=O, S) afforded the corresponding enantioenriched amides, which were subsequently enzymatically hydrolyzed. Surprisingly, CaLB also proved to be the catalyst of choice for this latter step. The heteroatom in the acyl donor profoundly influences both the enzymatic acylation and
已经证明了用于拆分手性胺的完全酶促方法。南极假丝酵母脂肪酶B(CaLB)催化的N-甲基和N-苯基甘氨酸酰化反应以及具有通式R 1 X CH 2 CO 2 R 2(R 1的类似物=我,Ph;X = O,S)得到相应的对映体富集的酰胺,其随后被酶水解。出乎意料的是,CaLB也被证明是此后一步的选择催化剂。酰基供体中的杂原子深刻影响酶的酰化作用和脱酰作用。就合成和水解中的对映选择性以及反应速率而言,O-取代的试剂表现最佳。