Effect of the α-Methyl Substituent on Chemoselectivity in Esterase-Catalyzed Hydrolysis of <i>S</i>-Acetyl Sulfanylalkanoates
作者:Ish Kumar、Ravinder S. Jolly
DOI:10.1021/ol990544+
日期:1999.7.1
The isomeric compounds 1 and 3, which differ only in the position of a methyl substituent, give opposite chemoselectivities in an esterase-catalyzed hydrolysis reaction. The esterase was chemoselective for the oxoester in 1, but for the thiol ester group in 3. A high enantioselectivity was observed for both 1 and 3.
仅在甲基取代基的位置上不同的异构体化合物1和3在酯酶催化的水解反应中具有相反的化学选择性。酯酶对1中的氧代酯具有化学选择性,但对3中的硫醇酯基具有化学选择性。对1和3均观察到高对映选择性。