CHEMOTHERAPEUTIC FLAVONOIDS, AND SYNTHESES THEREOF
申请人:Cushman Mark S.
公开号:US20100099755A1
公开(公告)日:2010-04-22
Substituted flavonoid compounds, and pharmaceutical formulations of flavonoid compounds are described. Also described are processes for preparing flavonid compounds, as are methods for treating cancer in mammals using the described flavonoid compounds or pharmaceutical formulations thereof.
Four different double metal cyanides (NiHCFe, CrHCFe, MnHCFe and ZnHCFe) were synthesized, followed by adsorbed on silica gel and used as Lewis acid catalyst in the isomerisation of substituted 2'-hydroxychalcones to flavanones under solvent-free (dry) condition. Optimization of the reaction condition, temperature effects, DMC catalysts loading and re-useable catalytic activity were further studied during the reaction. Among these catalysts, NiHCFe at 35 mol% loading gave excellent yield (90%) at 100 degrees C temperature in 1.15 h. Catalyst (NiHCFe) easily recovered and re-used six times without much loss of its catalytic activity which gave 80-85% product yields each time. However, these DMCs were failed to give product in the solution phase even prolonging the reaction time at reflux temperature. Similarly, isomerization of substituted 2'-aminochalcones gave 2-5% yields either in solution phase or under solvent-free condition. (C) 2013 Elsevier B.V. All rights reserved.
A new series of flavones, thioflavones, and flavanones as selective monoamine oxidase-B inhibitors
A new series of synthetic flavones, thioflavones, and flavanones has been synthesized and evaluated as potential inhibitors of monoamine oxidase isoforms (MAO-A and -B). The most active series is the flavanone one with higher selective inhibitory activity against MAO-B. Some of these flavanones (mainly the most effective) have been separated and tested as single enantiomers. In order to investigate the MAOs recognition of the most active and selective compounds, a molecular modeling study has been performed using available Protein Data Bank (PDB) structures as receptor models for docking experiments. (C) 2009 Elsevier Ltd. All rights reserved.
Bhat, V S; Joshi, V S, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1991, vol. 30, # 10, p. 976 - 977