Synthesis of β-C-glycopyranosyl-1,4-naphthoquinone derivatives and their cytotoxic activity
摘要:
beta-C-Glucosyl and beta-C-galactosyl-1,4-dimethoxynaphthalenes have been synthesized using a F3CCO2Ag/SnCl4 promoted Friedel-Crafts electrophilic substitution reaction. Both glycosyl acetates and methyl glycosides can be used as glycosyl donors. Further oxidation afforded the corresponding beta-C-glycosyl-1,4-naphthoquinones. The in vitro cytotoxic activity of these compounds was evaluated against the A375 cell line. (c) 2007 Elsevier Ltd. All rights reserved.
Synthesis of β-C-glycopyranosyl-1,4-naphthoquinone derivatives and their cytotoxic activity
摘要:
beta-C-Glucosyl and beta-C-galactosyl-1,4-dimethoxynaphthalenes have been synthesized using a F3CCO2Ag/SnCl4 promoted Friedel-Crafts electrophilic substitution reaction. Both glycosyl acetates and methyl glycosides can be used as glycosyl donors. Further oxidation afforded the corresponding beta-C-glycosyl-1,4-naphthoquinones. The in vitro cytotoxic activity of these compounds was evaluated against the A375 cell line. (c) 2007 Elsevier Ltd. All rights reserved.
Synthesis of triazole-linked β-C-glycosyl dimers as inhibitors of PTP1B
作者:Li Lin、Qiang Shen、Guo-Rong Chen、Juan Xie
DOI:10.1016/j.bmc.2008.09.066
日期:2008.11
Protein tyrosine phosphatase 1B (PTP1B) has emerged as a promising target for type 2 diabetes. We have successfully synthesized dimeric acetylated and benzoylated beta-C-D-glucosyl and beta-C-D-galactosyl 1,4-dimethoxy benzenes or naphthalenes by click chemistry. These compounds were further transformed into the corresponding beta-C-D-glycosyl-1,4-quinone derivatives by CAN oxidation. The in vitro inhibition test showed that dimeric benzoylated beta-C-D-glycosyl 1,4-dimethoxybenzenes or 1,4-benzoquinones were good inhibitors of PTP1B (IC50: 0.62-0.88 mu M), with no significant difference between gluco and galacto derivatives. (C) 2008 Elsevier Ltd. All rights reserved.
β-C-Glycosiduronic acids and β-C-glycosyl compounds: New PTP1B inhibitors
作者:Li Lin、Qiang Shen、Guo-Rong Chen、Juan Xie
DOI:10.1016/j.bmcl.2008.10.091
日期:2008.12
beta-C-Glycosiduronic acid quinones and beta-C-glycosyl compounds have been synthesized as sugar-based PTP1B inhibitors. Benzoyl protected quinone derivatives (14 and 35) as well as aryl beta-C-glycosyl compounds (18, 22, 23 and 34) showed IC50 values of 0.77-5.27 mu M against PTP1B, with compounds 18 and 23 bearing an acidic function being the most potent. (C) 2008 Elsevier Ltd. All rights reserved.