Regioselective Lipase-Catalysed Amidation of DicarboxylicN-Blocked Amino Acid Diesters – Effect of the Side-Chain Length
作者:Santiago Conde、Paloma López-Serrano、Ana Castro、Ana Martínez
DOI:10.1002/(sici)1099-0690(199911)1999:11<2835::aid-ejoc2835>3.0.co;2-t
日期:1999.11
α-aminopimelic acids yield exclusively the ω-monoamide when they are subjected to amidation catalysed by the lipase B of Candida antarctica in anhydrous diisopropyl ether. These results are in contrast to the α-monoamide yielded by the equivalent L-glutamic derivatives under the same experimental conditions. These results show that the length of the side chain plays a crucial role in the regioselectivity of the
当 (R)- 和 (S)-N- 封闭的 α-氨基己二酸和 α-氨基庚二酸的二乙酯在无水二异丙醚中受到南极念珠菌脂肪酶 B 催化的酰胺化时,它们仅产生 ω-单酰胺。这些结果与在相同实验条件下由等效的 L-谷氨酸衍生物产生的 α-单酰胺形成对比。这些结果表明侧链的长度在反应的区域选择性中起着至关重要的作用。