(+)-Hemipalmitoylcarnitinium strongly inhibits carnitine palmitoyltransferase-I in intact mitochondria
摘要:
The reaction of the methyl ester of (R)-norcarnitine with 1-bromo-2-heptadecanone produces (+)-6-[(methoxycarbonyl)methyl]-2-pentadecyl-4,4-dimethylmorpholinium bromide, 3, which hydrolyzes to (+)-6-(carboxylatomethyl)-2-pentadecyl-4,4-dimethylmorpholinium (hemipalmitoylcarnitinium, HPC) upon treatment with aqueous sodium hydroxide. Single-crystal X-ray analyses have confirmed the structures of (+)-HPC and 3. (+)-HPC inhibits carnitine palmitoyltransferase (CPT-I) activity for the forward reaction (palmitoyl-CoA + carnitine -->) in intact mitochondria from rat heart and rat liver. (+)-HPC competitively (versus carnitine) inhibits CPT-I activity in both rat heart and liver mitochondria with K(i) = 2.8 +/- 0.5 and 4.2 +/- 0.7 muM, respectively. As one of the strongest specific inhibitors of CPT-I, HPC is a potential therapeutic agent in myocardial ischemia and Type II diabetes.
(+)-Hemipalmitoylcarnitinium strongly inhibits carnitine palmitoyltransferase-I in intact mitochondria
摘要:
The reaction of the methyl ester of (R)-norcarnitine with 1-bromo-2-heptadecanone produces (+)-6-[(methoxycarbonyl)methyl]-2-pentadecyl-4,4-dimethylmorpholinium bromide, 3, which hydrolyzes to (+)-6-(carboxylatomethyl)-2-pentadecyl-4,4-dimethylmorpholinium (hemipalmitoylcarnitinium, HPC) upon treatment with aqueous sodium hydroxide. Single-crystal X-ray analyses have confirmed the structures of (+)-HPC and 3. (+)-HPC inhibits carnitine palmitoyltransferase (CPT-I) activity for the forward reaction (palmitoyl-CoA + carnitine -->) in intact mitochondria from rat heart and rat liver. (+)-HPC competitively (versus carnitine) inhibits CPT-I activity in both rat heart and liver mitochondria with K(i) = 2.8 +/- 0.5 and 4.2 +/- 0.7 muM, respectively. As one of the strongest specific inhibitors of CPT-I, HPC is a potential therapeutic agent in myocardial ischemia and Type II diabetes.
Synthesis and Antibiofilm Activity of a Second-Generation Reverse-Amide Oroidin Library: A Structure-Activity Relationship Study
作者:T. Eric Ballard、Justin J. Richards、Amanda L. Wolfe、Christian Melander
DOI:10.1002/chem.200801419
日期:——
A second-generationlibrary of 2-aminoimidazole-based derivatives incorporating a "reversed amide" (RA) motif in comparison to the marine natural product oroidin were synthesized and subsequently assayed for antibiofilmactivity against the medically relevant Gram-negative proteobacteria P. aeruginosa and A. baumannii. Most notably, an in-depth activity profile is reported for the most active subclass
Acylcarnitine analogues as topical, microbicidal spermicides.
作者:Prashant S. Savle、Gustavo F. Doncel、Stephen D. Bryant、M. Patricia Hubieki、R. Graham Robinette、Richard D. Gandour
DOI:10.1016/s0960-894x(99)00423-0
日期:1999.9
Acylcarnitine analogues, (+)-6-Carboxylatomethyl-2-alkyl-4,4-dimethylmorpholinium (Z-n, where n = the number of carbons in the alkyl chain), synthesized in multi-gram quantities show in vitro activities as spermicides, anti-HIV agents, and inhibitors of the growth of Candida albicans. Activity improves with increasing chain length. Compound Z-15 is a candidate for further study as a topical, microbicidal spermicide. (C) 1999 Elsevier Science Ltd. All rights reserved.
ZHAO, CHEN;CHEN, SHAO-LIN;WU, PEI-QIANG;WEN, ZHONG, XUASYUEH SYUEHBAO, 46,(1988) N 8, S. 784-790