Synthesis and biological activity of novel thiazolidin-4-ones with a carbohydrate moiety
作者:Hua Chen、Lingling Jiao、Zaihong Guo、Xiaoliu Li、Cuilan Ba、Jinchao Zhang
DOI:10.1016/j.carres.2008.09.004
日期:2008.12
Some novel 2-aryl-3-[5-deoxy-1,2-O-isopropylidene-alpha-D-Xylofuranose-5-C-yl] thiazolidin-4-ones were synthesized by the three-component condensation of an amino sugar 1, an aromatic alclehyde 2, and mercaptoacetic acid 3 in the presence of DCC and DMAP at room temperature. Two diastereoisomers 4 and 5 were afforded as the main products in totally isolated yields of 25.4-70%. The reaction was carried out with almost no observed stereoselectivity except in the case of 2c, which showed a moderate stereoselectivity. The structures of the new compounds were determined by NMR spectroscopy and mass spectrometry (MS), and the configuration of the newly generated chiral carbon (C-2) in the thiazolidin-4-one ring was tentatively assigned based on the X-ray crystallographic structure of 5d and the comparison of their corresponding NMR signals. The antitumor (human cervical cancer cells) activity and the inhibition against the glycosidases (alpha-glucosidase, beta-glucosidase, (alpha-amylase) have been evaluated for the new compounds, some of which exhibited antitumor activity. (C) 2008 Elsevier Ltd. All rights reserved.