title: Renin inhibitors. Design of angiotensinogen transition-state analogues containing novel. (2R,3R,4R,5S)-5-amino-3,4-dihydroxy-2-isopropyl-7-methyloctanoic acid.
abstract: A highly stereoselective synthesis of 2(R)-[5(R)-[1(S)-[(tert-butyloxycarbonyl)amino]-3-methylbutyl]-2,2- dimethyl-4(R)-dioxolanyl]-3-methylbutanoic acid is described. This is a suitably protected carboxylic acid useful as an intermediate for the preparation of renin inhibitory peptides. Angiotensinogen analogues such as peptides IX and X that contain the dipeptide isostere (2R,3R,4R,5S)-5-amino-3,4-dihydroxy-2-isopropyl-7-methyloctanoic acid residue at the scissile site are shown to be potent inhibitors of human plasma renin. The glycol moiety in this novel acid, dihydroxyethylene isostere, is suggested to act as a transition-state analogue and mimics the tetrahedral intermediate formed during the enzyme-catalyzed hydrolysis of the peptidic bond.
authors.forename: S
authors.initials: S
authors.lastname: Thaisrivongs
authors.forename: D T
authors.initials: DT
authors.lastname: Pals
authors.forename: L T
authors.initials: LT
authors.lastname: Kroll
authors.forename: S R
authors.initials: SR
authors.lastname: Turner
authors.forename: F S
authors.initials: FS
authors.lastname: Han
mesh_terms: D000596:Amino Acids / Q000138:chemical synthesis* / Q000494:pharmacology; D000808:Angiotensinogen; D004791:Enzyme Inhibitors / Q000138:chemical synthesis / Q000494:pharmacology; D006801:Humans; D013237:Stereoisomerism; D013329:Structure-Activity Relationship; D000092502:Renin Inhibitors
chemical_list: D000596:Amino Acids; D000808:Angiotensinogen; D004791:Enzyme Inhibitors; D000092502:Renin Inhibitors; C052395:5-amino-3,4-dihydroxy-2-isopropyl-7-methyloctanoic acid