Mercaptoacyl aminoacid inhibitors of atriopeptidase. 1. Structure-activity relationship studies of methionine and S-alkylcysteine derivatives
摘要:
A broad series of N-(3-mercaptoacyl) amino acid derivatives was evaluated for their ability to inhibit atriopeptidase (neutral endopeptidase, EC 3.4.24.11) in vitro and in vivo. Structural parameters studied were (i) the substituent on the 2-position of the 3-mercaptopropionyl moiety, (ii) the amino acid component, (iii) the S-terminal derivative, and (iv) the C-terminal derivative. Optimum activity was observed for derivatives of methionine and S-alkylcysteines. N-[3-Mercapto-2(S)-[(2-methylphenyl)methyl]-1-oxopropyl]-L-methionine was identified as a highly effective inhibitor of atriopeptidase meriting evaluation as a potential cardiovascular therapeutic agent.
The invention relates to urea compounds which are useful as antihypertensives.
这项发明涉及尿素化合物,可用作降压药。
Carboxyalkyl urea compounds and derivatives thereof useful as
申请人:Merck & Co., Inc.
公开号:US04866087A1
公开(公告)日:1989-09-12
Carboxyalkyl urea compounds and derivatives thereof are disclosed which are useful as angiotensin converting enzyme (ACE) inhibitors and as antihypertensives. These compounds and derivatives are represented by the general formula: ##STR1## An illustrative specie falling within this general formula is: N-(2-carboxy-4-phenylbutyl-N-isopropylaminocarbonyl-L-tryptophan.
The invention relates to urea compounds of the formula
wherein:
R is hydrogen, loweralkyl, aralkyl;
R1 is alkyl, substituted alkyl, optionally substituted aralkyl and heteroaralkyl;
R2 is hydrogen, optionally substituted alkyl;
R3 is hydrogen, loweralkyl;
R4 is optionally substituted alkyl; or,
R3 and R4 may be connected together to form an alkylene bridge or an optionally substituted alkylene bridge containing one sulfur atom and two to three carbon atoms, or an alkylene bridge containing a double bond or a substituted alkylene bridge or an alkylene bridge bearing a benzofusion thereto; and
the pharmaceutically acceptable salts thereof, and a process for preparing the same. Those compounds are useful as antihypertensives.