[Studies on the chemical constituents in herb of Hedyotis diffusa].
OBJECTIVE
To study the chemical constituents of Hedyotis diffusa.


METHODS
Column chromatographic techniques were used for isolation and purification of chemical constituents of this plant and their structures were identified by spectroscopic analysis.


RESULTS
Five compounds were isolated and identified as scandoside methyl ester (I), deacetylasperulosidic acid methyl ester (II), 10-dehydrogeniposide (III), 2-hydroxy-3-methylanthraquinone (IV), stigmasterol (V), respectively.


CONCLUSIONS
Compound II as iridoids was isolated from Hedyotis diffusa for the first time, compound III as iridoids was isolated from genus Hedyotis for the first time.
Zhang
Yong-Yong
YY
Key Laboratory of Research of TCM and New Drug, Southern Medical University, Guangzhou 510515, China. cpuzyy@sohu.com
Luo
Jia-Bo
JB
D000880:Anthraquinones / Q000737:chemistry / Q000302:isolation & purification*; D003373:Coumaric Acids / Q000737:chemistry / Q000302:isolation & purification*; D032064:Hedyotis / Q000737:chemistry*; D039823:Iridoids / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D013265:Stigmasterol / Q000737:chemistry / Q000302:isolation & purification
D000880:Anthraquinones; D003373:Coumaric Acids; C509054:E-6-O-p-coumaroyl scandoside methyl ester; D039823:Iridoids; D013265:Stigmasterol