作者:Mélanie Bolduc、Jérôme Bergeron、Annie Michaud、Nicholas Pelchat、Pierre Morin、Mohammed Dasser、Robert Chênevert
DOI:10.1016/j.tetasy.2012.04.001
日期:2012.4
2-Substituted glycerol derivatives 4a–g were resolved by acylation with vinyl butyrate in the presence of lipases in organic media. The reverse reaction, the enzymatic hydrolysis of the corresponding butyrates 5a–g, was also highly stereoselective and provided the opposite enantiomers. High enantioselectivities (ee >90%) and good isolated yields were obtained for all substrates using the appropriate
2-取代的甘油衍生物4a-g通过在有机介质中在脂肪酶存在下用丁酸乙烯酯酰化来拆分。反向反应,相应的丁酸酯5a-g的酶促水解,也具有很高的立体选择性,并提供了相反的对映异构体。使用适当的脂肪酶,所有底物均具有较高的对映选择性(ee> 90%)和良好的分离产率。洋葱假单胞菌脂肪酶或紧密相关的假单胞菌属sp。脂肪酶是用于拆分带有较小脂肪族基团的底物的最有效酶。南极假丝酵母脂肪酶B更适合作为生物催化剂来解决空间要求更高的芳香族底物。2- Benzylglycerol衍生物的存在下得到解决根霉属。脂肪酶。