Chemical constituents in twigs and leaves of Rhododendron fortunei
10.7501/j.issn.0253-2670.2013.22.006
- Author:
Hong ZENG
1
Author Information
1. College of Pharmacy
- Publication Type:Journal Article
- Keywords:
Grayanotoxin I;
Kaempferol 3-O-α-L-rhamnopyranoside;
Myricetin-3-O- α-Lrhamnoside;
Rhododendron fortunei Lindl.;
Rhododendron L.
- From:
Chinese Traditional and Herbal Drugs
2013;44(22):3123-3126
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To study the chemical constituents in the twigs and leaves of Rhododendron fortunei. Methods: The ethyl acetate fraction of 95% ethanol extract from R. fortunei was separated and purified by silica gel and Sephadex LH-20 column chromatography. The structures of the compounds were identified by physicochemical properties and various spectroscopic methods. Results: Twelve compounds were isolated as kaempferol 3-O-α-L-rhamnopyranoside (1), quercitrin (2), myricetin-3-O-α-Lrhamnoside (3), trans-caffeic acid (4), cis-caffeic acid (5), (2R, 3S)-6, 8-di-C-methyldihydrokaempferol (6), fraxetol (7), protocatechuic acid (8), quercetin (9), kaempferol (10), myricetin (11), and grayanotoxin I (12). Conclusion: All the compounds are isolated from the twigs and leaves of R. fortunei for the first time. Compounds 1-8 and 10 are isolated from the plants of Rhododendron L. for the first time, and compounds 3-7 are isolated from the plants in Ericaceae for the first time.
