Synthesis and antifungal activity of a novel series of 13-(4-isopropylbenzyl)berberine derivatives
摘要:
By replacing the methyl group of 13-(4-isopropylbenzyl)berberine 2 with various acyl, alkyl, and benzyl groups via the demethylated intermediate, 13-(4-isopropylbenzyl) berberrubine 4, a novel series of 9-O-alkyl-13-(4-isopropylbenzyl)berberine derivatives was synthesized and examined for antifungal activities against various human pathogenic fungi. The introduction of various alkyl groups led to enhanced antifungal activity but that of acyl groups resulted in decrease of the activity. Among them, 9-O-butyl-13-(4-isopropylbenzyl)berberine 6d exhibited the most potent antifungal activities against Cryptococcus neoformans, Candida species (MIC = 0.25-1 mu g/ml), and Aspergillus species (MIC = 2-4 mu g/ml). The compound was found to be relatively safe up to 900 mg/kg in oral administration to mice. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis and antifungal activity of a novel series of 13-(4-isopropylbenzyl)berberine derivatives
摘要:
By replacing the methyl group of 13-(4-isopropylbenzyl)berberine 2 with various acyl, alkyl, and benzyl groups via the demethylated intermediate, 13-(4-isopropylbenzyl) berberrubine 4, a novel series of 9-O-alkyl-13-(4-isopropylbenzyl)berberine derivatives was synthesized and examined for antifungal activities against various human pathogenic fungi. The introduction of various alkyl groups led to enhanced antifungal activity but that of acyl groups resulted in decrease of the activity. Among them, 9-O-butyl-13-(4-isopropylbenzyl)berberine 6d exhibited the most potent antifungal activities against Cryptococcus neoformans, Candida species (MIC = 0.25-1 mu g/ml), and Aspergillus species (MIC = 2-4 mu g/ml). The compound was found to be relatively safe up to 900 mg/kg in oral administration to mice. (C) 2010 Elsevier Ltd. All rights reserved.
Berberrubine Derivatives Having Antifungal Activities
申请人:Kim Sung Uk
公开号:US20100292476A1
公开(公告)日:2010-11-18
The present invention relates to a berberrubine derivative having superior antifungal activity, more particularly to a berberrubine derivative having inhibitory activity against chitin synthase, which participates in the synthesis of chitin and is essential in the growth of fungi, and having a potent antifungal activity against human pathogenic fungi.
Synthesis and antifungal activity of a novel series of 13-(4-isopropylbenzyl)berberine derivatives
作者:Ki Duk Park、Sung Jin Cho、Jae Sun Moon、Sung Uk Kim
DOI:10.1016/j.bmcl.2010.09.045
日期:2010.11
By replacing the methyl group of 13-(4-isopropylbenzyl)berberine 2 with various acyl, alkyl, and benzyl groups via the demethylated intermediate, 13-(4-isopropylbenzyl) berberrubine 4, a novel series of 9-O-alkyl-13-(4-isopropylbenzyl)berberine derivatives was synthesized and examined for antifungal activities against various human pathogenic fungi. The introduction of various alkyl groups led to enhanced antifungal activity but that of acyl groups resulted in decrease of the activity. Among them, 9-O-butyl-13-(4-isopropylbenzyl)berberine 6d exhibited the most potent antifungal activities against Cryptococcus neoformans, Candida species (MIC = 0.25-1 mu g/ml), and Aspergillus species (MIC = 2-4 mu g/ml). The compound was found to be relatively safe up to 900 mg/kg in oral administration to mice. (C) 2010 Elsevier Ltd. All rights reserved.