Synthesis of analogs of the carboxyl protease inhibitor pepstatin. Effect of structure on inhibition of pepsin and renin
作者:Daniel H. Rich、Eric T. O. Sun、Edgar Ulm
DOI:10.1021/jm00175a006
日期:1980.1
Analogues of the carboxyl protease inhibitor, pepstatin, were synthesized from optically pure forms of N-(tert-butoxycarbonyl)-4-amino-3-hydroxy-6-methylheptanoic acid (Boc-Sta), and the inhibition of pepsin and renin was determined. In addition, the new amino acid (3S,4S)-4-amino-3-hydroxy-5-phenylpentanoic acid [AHPPA] was synthesized and the stereochemistry of the 3 and 4 positions established.
由光学纯的N-(叔丁氧羰基)-4-氨基-3-羟基-6-甲基庚酸(Boc-Sta)合成羧基蛋白酶抑制剂胃蛋白酶抑制素的类似物,胃蛋白酶和肾素的抑制作用为决心。另外,合成了新的氨基酸(3S,4S)-4-氨基-3-羟基-5-苯基戊酸[AHPPA],并建立了3和4位的立体化学。三肽异戊酰基-L-戊酰基-(3S,4S)-4-氨基-3-羟基-6-甲基庚酰基-L-丙氨酸异戊酰胺[Iva-Val-(3S,4S)-Sta-Ala-NHiC5H11]和Iva-发现Val-(3S,4S)-AHPPA-Ala-NHiC5H11是胃蛋白酶的有效抑制剂,Ki分别为1 x 10(-9)和0.9 x 10(-9)M。将(3S)-羟基的手性更改为3R或缩短肽链可减少与胃蛋白酶的结合力100倍以上。