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A new chalcone and a flavone from Andrographis neesiana.

作者信息

Kesava Reddy Muntha, Vijaya Bhaskar Reddy Mopuru, Anil Kumar Reddy Bandi, Gunasekar Duvvuru, Caux Cristelle, Bodo Bernard

机构信息

Natural Products Division, Department of Chemistry, Sri Venkateswara Universit, Tirupati, India.

出版信息

Chem Pharm Bull (Tokyo). 2003 Jul;51(7):854-6. doi: 10.1248/cpb.51.854.

DOI:10.1248/cpb.51.854
PMID:12843595
Abstract

Two new flavonoids, 2',4',6',2,3,4-hexamethoxychalcone (1) and 5-hydroxy-7,2',5'-trimethoxyflavone (2) together with a known flavone glycoside, echioidinin 5-O-beta-D-glucopyranoside (3) were isolated from the whole plant of Andrographis neesiana, and the structures were elucidated by electrospray ionization tandem mass spectrometry (ESI-MS/MS) and one- and two-dimensional (1D- and 2D)-NMR spectral studies including 1H-1H correlation spectroscopy (COSY), heteronuclear single quantum coherence (HSQC), heteronuclear multiple bond connectivity (HMBC) and nuclear Overhauser enhancement spectroscopy (NOESY) experiments.

摘要

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