Structure-activity study of 6-substituted 2-pyranones as inactivators of .alpha.-chymotrypsin
作者:William A. Boulanger、John A. Katzenellenbogen
DOI:10.1021/jm00157a007
日期:1986.7
with benzyl or benzyl-like substitution falling in between. The sequence of binding of 6-substituted pyrones is Cl greater than Br greater than H greater than CF3. 6-Chloro-2-pyranones bearing 4-phenyl or 3-(2-naphthylmethyl) substituents effected rapid inactivation of chymotrypsin, while those having 3-benzyl or 3-(1-naphthylmethyl) substituents gave slow inactivation and those with 3-phenyl or 3-alkyl
合成了一系列2-吡喃酮,在6-位带有卤素或吸电子基团,在3、4和5位带有烷基,芳基或芳烷基,以研究它们与胰凝乳蛋白酶的结合和灭活。2-吡喃酮的结合和失活都对3、4、5和6位上的取代敏感。结合在3位上的烷基取代基最弱,而在苯基取代上最好,而苄基或类似苄基的取代介于两者之间。6-取代的吡喃酮的结合顺序是Cl大于Br,H大于CF3。带有4-苯基或3-(2-萘基甲基)取代基的6-氯-2-吡喃酮可快速灭活胰凝乳蛋白酶,而具有3-苄基或3-(1-萘甲基)取代基的化合物则失活较慢,而具有3-苯基或3-烷基取代基的化合物则无失活。只有6-卤代吡喃酮表现出失活作用,其中氯取代的吡喃酮的作用要快于溴取代的那些。