This paper describes the synthesis of a new class of peptidomimetic cysteine protease inhibitors based on a 1,4-benzodiazepine scaffold and on an electrophilic vinyl sulfone moiety. The former was introduced internally to a peptide sequence that mimics the fragment D-Ser-Gly; the latter was built on the P1-P1' site and reacts as a classical "Michael acceptor", leading to an alkylated enzyme by irreversible
本文介绍了一种新型的拟肽半胱
氨酸蛋白酶抑制剂的合成,该
抑制剂基于1,4-苯并二氮杂pine骨架和亲电子
乙烯基砜部分。前者在内部被引入到模拟片段D-Ser-Gly的肽序列中。后者建立在P1-P1'位点上,并作为经典的“迈克尔受体”反应,通过不可逆地添加活性位点半胱
氨酸的
硫醇基团生成烷基化酶。
乙烯基砜部分的引入已通过烯烃交叉复分解完成,烯烃复分解是形成碳-碳双键的有力工具。新化合物2-3已被证明是有效的和选择性的falcipain-2
抑制剂,falcipain-2是一种从恶性疟原虫中分离出来的半胱
氨酸
蛋白酶,具有抗血浆活性。