(Phosphinyloxy)acyl amino acid inhibitors of angiotensin converting enzyme. 2. Terminal amino acid analogs of (S)-1-[6-amino-2-[[hydroxy(4-phenylbutyl)phosphinyl]oxy]-1-oxohexyl]-L-proline
摘要:
Analogues of (S)-1-[6-amino-2[[hydroxy(4-phenylbutyl)phosphinyl] oxy]-1-oxohexyl]-L-proline (1, SQ 29,852) in which the terminal proline residue has been replaced by a variety of substituted and heteroatom-substituted prolines, N-arylglycines, N-cycloalkylglycines, and bicyclic amino acids have been synthesized and evaluated as inhibitors of angiotensin converting enzyme in vitro and in vivo. In general, the addition of lipophilic substituents to the 4-position of proline of the parent phosphonate 1 resulted in substantial increases in in vitro activity. The largest improvements were observed in the case of cis-benzyl (36-fold) and dithioketal (24-fold) analogues 2r and 2x, respectively. These enhancements of in vitro activity were accompanied by modest increases (2-3.5-fold) in in vivo (iv) activity. Among the various terminal amino acid replacements examined in this study, the indoline-based analogue 2i was by far the most potent compound on iv administration in the normotensive rat.
非极性侧链的同手性α-氨基酸的肽可以形成一个1.8 8螺旋。在本文中,我们报道α氨氧基肽的构象研究1,2,3,已经官能化侧链,在这两种非极性和极性溶剂。1 H NMR,XRD和FTIR吸收研究证实了非极性溶剂以及甲醇中均存在八元环分子内氢键(N-O圈)。肽的CD研究1,2,3在不同的溶剂中,表明在甲醇和酸性水性缓冲液中保留了相当程度的螺旋含量。在α-氨氧基肽中引入功能化侧链为设计生物活性肽提供了机会。
Phosphonate substituted amino or imino acids useful as antihypertensives
申请人:E.R. SQUIBB & SONS, INC.
公开号:EP0414190A2
公开(公告)日:1991-02-27
This invention is directed to new phosphonate substituted amino or imino acids of the formula
isomeric mixtures thereof and pharmaceutically acceptable salts thereof, wherein: X is an imino or amino acid of the formula
or
which show hypotensive activity.