Biologically important polyphenol (+)-catechin was isolated from catechu, the extract of the red heartwood of Acacia Catechu tree (Khoiyer tree). The isolation procedure was developed to get better yield (25%) and to reduce the isolation cost and time. The structure of the isolated (+)-catechin was confirmed with several spectral analyses and chemical studies. Keywords:  Acacia Catechu; (+)-catechin; Polyphenol. © 2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v1i2.1635

No abstract

No abstract

A phytochemical investigation of the crude extracts of the bark and leaves of Calophyllum symingtonianum has resulted in the isolation of inophyllum D, inophyllum H, calanone, isocordato-oblongic acid, amentoflavone, carpachromene and lupenone. Their chemical structures were elucidated and confirmed by spectroscopic analysis. All flavonoids and coumarins showed significant α-glucosidase inhibitory activity, while amentoflavone gave a positive result against 15-lipoxygenase inhibition.

No abstract