Hydroxamic Acids as Potent Inhibitors of Endothelin-Converting Enzyme from Human Bronchiolar Smooth Muscle
摘要:
Hydroxamic acids 6a-h, derived from malonyl amino acids, and 25a-d, derived from succinyl amino acids, were synthesized as inhibitors of human bronchiolar smooth muscle endothelin-converting enzyme (HBSM ECE). Several unexpected side reactions were discovered, particularly in the synthesis of hydroxamates derived from succinates. In vitro evaluation against human bronchiolar ECE revealed that in all cases hydroxamates derived from malonate were more potent than hydroxamates derived from succinate. Isopropyl and isobutyl P-1' side chains were suitable; omission of the P-1' Side chain seriously diminished potency. In the P-2' position, several amino acids gave potent malonate-derived hydroxamate inhibitors (6b,d-h, IC50 = 0.2-6.8 nM), and beta-Ala provided an extremely potent inhibitor (6c, IC50 = 0.01 nM). C-terminus carboxylates are much more potent ECE inhibitors than the corresponding amides. Most of the hydroxamates were also potent inhibitors of thermolysin and neutral endopeptidase (NEP); however, the P-2' beta-Ala derivative 6c uniquely inhibited HBSM ECE much more potently than NEP.
Hydroxamic Acids as Potent Inhibitors of Endothelin-Converting Enzyme from Human Bronchiolar Smooth Muscle
摘要:
Hydroxamic acids 6a-h, derived from malonyl amino acids, and 25a-d, derived from succinyl amino acids, were synthesized as inhibitors of human bronchiolar smooth muscle endothelin-converting enzyme (HBSM ECE). Several unexpected side reactions were discovered, particularly in the synthesis of hydroxamates derived from succinates. In vitro evaluation against human bronchiolar ECE revealed that in all cases hydroxamates derived from malonate were more potent than hydroxamates derived from succinate. Isopropyl and isobutyl P-1' side chains were suitable; omission of the P-1' Side chain seriously diminished potency. In the P-2' position, several amino acids gave potent malonate-derived hydroxamate inhibitors (6b,d-h, IC50 = 0.2-6.8 nM), and beta-Ala provided an extremely potent inhibitor (6c, IC50 = 0.01 nM). C-terminus carboxylates are much more potent ECE inhibitors than the corresponding amides. Most of the hydroxamates were also potent inhibitors of thermolysin and neutral endopeptidase (NEP); however, the P-2' beta-Ala derivative 6c uniquely inhibited HBSM ECE much more potently than NEP.
[EN] INHIBITORS OF THE CONVERSION OF BIG ENDOTHELIN TO ENDOTHELIN
申请人:BERLEX LABORATORIES, INC.
公开号:WO1993011154A1
公开(公告)日:1993-06-10
(EN) Novel and known compounds are described which inhibit endothelin converting enzyme (ECE), thereby preventing the conversion of Big Endothelin (BET) to Endothelin (ET). Pharmaceutical usefulness and preparations are described.(FR) L'invention concerne des composés nouveaux et connus qui inhibent l'enzyme de conversion de l'endothéline, empêchant ainsi la conversion de l'endothéline ''Big'' (ETB) en endothéline (ET). Des applications et des préparation pharmaceutiques sont également décrites.
Hydroxamic Acids as Potent Inhibitors of Endothelin-Converting Enzyme from Human Bronchiolar Smooth Muscle
作者:Ron Bihovsky、Barry L. Levinson、Rivka C. Loewi、Paul W. Erhardt、Mark A. Polokoff
DOI:10.1021/jm00012a011
日期:1995.6
Hydroxamic acids 6a-h, derived from malonyl amino acids, and 25a-d, derived from succinyl amino acids, were synthesized as inhibitors of human bronchiolar smooth muscle endothelin-converting enzyme (HBSM ECE). Several unexpected side reactions were discovered, particularly in the synthesis of hydroxamates derived from succinates. In vitro evaluation against human bronchiolar ECE revealed that in all cases hydroxamates derived from malonate were more potent than hydroxamates derived from succinate. Isopropyl and isobutyl P-1' side chains were suitable; omission of the P-1' Side chain seriously diminished potency. In the P-2' position, several amino acids gave potent malonate-derived hydroxamate inhibitors (6b,d-h, IC50 = 0.2-6.8 nM), and beta-Ala provided an extremely potent inhibitor (6c, IC50 = 0.01 nM). C-terminus carboxylates are much more potent ECE inhibitors than the corresponding amides. Most of the hydroxamates were also potent inhibitors of thermolysin and neutral endopeptidase (NEP); however, the P-2' beta-Ala derivative 6c uniquely inhibited HBSM ECE much more potently than NEP.