Inhibition of the mammalian .beta.-lactamase renal dipeptidase (dehydropeptidase-I) by Z-2-(acylamino)-3-substituted-propenoic acids
摘要:
The title enzyme deactivates the potent carbapenem antibiotic imipenem in the kidney, producing low antibiotic levels in the urinary tract. A series of (Z)-2-(acylamino)-3-substituted-propenoic acids (3) are specific, competitive inhibitors of the enzyme capable of increasing the urinary concentration of imipenem in vivo. Many of the compounds were prepared in one step from an alpha-keto acid and a primary amide. The optimum R2 groups are 2,2-dimethyl, -dichloro, and -dibromocyclopropyl. With R2 = 2,2-dimethylcyclopropyl (DMCP), a wide variety of R3 groups including alkyl, oxa- and thiaalkyl, and alkyl groups containing acidic, basic, and neutral substituents give effective inhibitors with Ki values of 0.02-1 microM and a range of pharmacokinetic properties. By resolution of enantiomers and X-ray crystallography, the enzyme-inhibitory activity of the DMCP group was found to reside with the 1S isomer. The cysteinyl compound 176 (cilastatin, MK-0791) has the desired pharmacological properties and has been chosen for combination with imipenem.
@ A process for preparing bis-α-keto-carboxylic acids by reacting a dihaloalkane in a liquid solvent medium with carbon monoxide at elevated temperature and pressure in the presence of a catalytic amount of a metal carbonyl compound and an alkali or an alkaline earth metal inorganic base.
作者:ASHTON, WALLACE T.、CHEN, ANNA、ROGERS, EDWARD F.
DOI:——
日期:——
US4739113A
申请人:——
公开号:US4739113A
公开(公告)日:1988-04-19
[EN] PREPARATION OF BIS- alpha -KETO-CARBOXYLIC ACIDS
申请人:ETHYL CORPORATION
公开号:WO1985002180A1
公开(公告)日:1985-05-23
(EN) A process for preparing bis-$g(a)-keto-carboxylic acids by reacting a dihaloalkane in a liquid solvent medium with carbon monoxide at elevated temperature and pressure in the presence of a catalytic amount of a metal carbonyl compound and an alkalo or an alkaline earth metal inorganic base.(FR) Procédé de préparation d'acides bis-$g(a)-céto-carboxyliques en faisant réagir un dihaloalcane dans un milieu solvant liquide avec du monoxyde de carbone à une température et une pression élevées en présence d'une quantité catalytique d'un composé de carbonyle métallique et d'une base inorganique de métal alcalin ou alcalino-terreux.