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[Isolation and structural identification of phenylethanoid glycosides from Corallodiscus flabellata]
Xiao-ke Zheng1, Jun Li, Wei-sheng Feng
1Henan College of Traditional Chinese Medicine, Zhengzhou 450008, China.
Aim:
To study the chemical constituents from Corallodiscus flabellata.
Methods:
The compounds were isolated and purified by macroporous adsorption resin, silica gel column chromatography and identified on the basis of their physiochemical and spectral data.
Results:
Three phenylethanoid glycosides (I-III) were obtained from the n-BuOH fraction of water-extracts. Their structures were elucidated as 3,4-dihydroxyphenylethanol-8-O-[beta-D-apiofuranosyl (1-->3)]-beta-D-glucopyranoside (I), 3,4-dihydroxyphenylethanol-8-O-[4-O-trans-caffeoyl-beta-D-apiofuranosyl (1-->3)-beta-D-glucopyranosyl-(1-->6)]-beta-D-glucopyranoside (II) and 3,4-dihydroxyphenylethanol-8-O-[beta-D-apiofuranosyl(1-->3)-beta- D-glucopyranosyl-(1-->6)]-beta-D-glucopyranoside (III).
Conclusion:
Compounds I, II and III are new compounds.