The chemical constituents of Knoxia valerianoides.

Author: Shan-qin YUAN ¹ ; Yi-min ZHAO
Author Information

1. Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China.
Publication Type:Journal Article
MeSH: Anthraquinones; chemistry; isolation & purification; Molecular Structure; Plant Tubers; chemistry; Plants, Medicinal; chemistry; Rubiaceae; chemistry
From: Acta Pharmaceutica Sinica 2005;40(5):432-434
CountryChina
Language:Chinese
Abstract:
AIMTo study chemical constituents of Knoxia valerianoides Thorel et Pitard.
METHODSChromatographic methods were used for the isolation and purification. Structures was elucidated on the basis of chemical analysis and spectroscopic data.
RESULTSTwo anthraquinone were isolated from Knoxia valerianoides Thorel et Pitard and identified as 1,3,5-trihydroxy-2-ethoxymethyl-6-methoxyl-anthraquinone (I) and 1,3-dihydroxy-2-ethoxymethyl-anthraquinone (II).
CONCLUSIONThe compound I was found to be a novel anthraquinone constituent and II was isolated from Knoxia valerianoides Thorel et Pitard for the first time.