Antimicrobial Activity of 9-O-Acyl- and 9-O-Alkylberberrubine Derivatives
作者:Sung Han Kim、Sang Jun Lee、Joo Hyoung Lee、Won Suck Sun、Jung Han Kim
DOI:10.1055/s-2002-23128
日期:2002.3
structure-activity relationship study on berberrubine derivatives, a series of compounds bearing 9-O-acyl- and 9-O-alkyl-substituents were synthesized and tested for antimicrobial activity against Gram-positive, Gram-negative bacteria and fungi. Octanoyl, decanoyl, lauroyl derivatives among the acyl analogs and hexyl, heptyl, octyl, nonyl, decyl, undecyl derivatives among the alkyl analogs showed strong antimicrobial
In order to enhance oral bioavailability of berberine (BBR) for its cholesterol-lowering efficacy in vivo, a series of ester or ether prodrugs of berberrubine (M1), which is an active metabolite of BBR after first-pass metabolism, were designed, semi-synthesized, and evaluated. Among these M1 prodrugs, compound 5g possessing palmitate at the 9-position showed a moderate Log P value and esterase hydrolysis rate for releasing M1 in blood. Its cholesterol-lowering efficacy in vivo was evaluated in hyperlipidemic SD rats. Compound 5g (100 mg/kg/d) reduced blood CHO and LDL-c by 35.8% and 45.5%, respectively, similar to that by BBR. It also exhibited a good safety in rats with no side-effect on liver and kidney function. Therefore, the design of M1 prodrug appears to be an effective strategy to improve pharmacokinetic feature of BBR for its lipid-lowering efficacy in vivo. (C) 2010 Elsevier Ltd. All rights reserved.