β-Lactam Derivatives as Enzyme Inhibitors: 1-Peptidyl Derivatives of 4-Phenylazetidin-2-one as Inhibitors of Elastase and Papain
作者:Karin Achilles、Tanja Schirmeister、Hans-Hartwig Otto
DOI:10.1002/1521-4184(20008)333:8<243::aid-ardp243>3.0.co;2-o
日期:2000.8
hydrolysis to the free acid, was acylated with amino acid esters or di‐ or tripeptide esters. The enzymatic assays proved some derivatives to be effective inhibitors of PPE and/or papain. N‐BOC protected amino acid derivatives without a spacer group inhibited PPE reversibly, while derivatives with spacer group showed either weak or no inhibitory properties. On the other hand, papain was inactivated irreversibly
N-Peptidyl 取代的 azetidin-2-ones 被合成并评估为丝氨酸蛋白酶弹性蛋白酶和半胱氨酸蛋白酶木瓜蛋白酶的抑制剂。所有化合物均由 4-苯基氮杂环丁烷-2-one 合成,无论是外消旋体还是纯对映体。(S)-对映异构体由(S)-β-苯基-β-丙氨酸通过对映选择性合成制备,而(R)-对映异构体通过用α-胰凝乳蛋白酶进行酶促拆分获得。用溴乙酸酯进行 N-烷基化引入了一个间隔基团,在水解成游离酸后,该基团被氨基酸酯或二肽或三肽酯酰化。酶促测定证明一些衍生物是 PPE 和/或木瓜蛋白酶的有效抑制剂。没有间隔基团的 N-BOC 保护的氨基酸衍生物可逆地抑制 PPE,而带有间隔基团的衍生物表现出弱或没有抑制特性。另一方面,木瓜蛋白酶被 (RS)-2-oxo-4-phenylazetidin-1-乙酸乙酯不可逆地灭活。N-(2-oxo-4-phenylazetidin-1-acetyl)