作者:Emmanuel Leroy、Nicolas Bensel、Jean-Louis Reymond
DOI:10.1002/adsc.200303005
日期:2003.6
Fluorogenic cyanohydrin esters were prepared that release the fluorescent product umbelliferone by secondary decomposition of the primary cyanohydrin reaction product by cyanide elimination to the aldehyde and subsequent β-elimination. Whereas butyrate 1b and octanoate 1d show the highest reaction rates with enzymes, the highest relative rates above the non-catalyzed background reaction are achieved
制备了荧光氰醇酯,其通过氰化物消除成醛并随后进行β-消除作用而使初级氰醇反应产物进行二次分解,从而释放出荧光产物伞形酮。丁酸1b和辛酸1d与酶的反应速率最高,而新戊酸酯1c和苯甲酸酯1e的相对速率最高,高于非催化本底反应。当转化率稳定在最大荧光释放量的50%时,检测到对映选择性反应,并通过未反应的氰醇酯底物的手性HPLC分析确认对映选择性。