Abstract:
This paper reports the synthesis of eleven
N-(4-carbomethoxy-4-phthalimidobu-tanoyl)-
N-substituted glycines(VⅡ
1~9),proline(VⅡ
10)and pyroglutamic acid(VⅡ
11)expected tohave inhiMtory activity on angiotensin converting enzyme.All of the compounds mentioned above and the corresponding
t-butyl esters of VⅡ
1~9 were not reported in the literature previously.The structures were confirmed through their IR,
1HNMR,MS spectra and elemental analysis.In preliminary test in rats,compounds VII
8,VII
9 and VII
10 showed marked hypotensive activity.