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Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials 2008-Oct

[Structrue identification of biflavones and determination of Taxol from Taxus Madia].

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Xiang-Qian Liu
Xiao-Dan Zhang
Yu-Lin Zhu
Bum-Young Shin
Shi-Xu Wu

キーワード

概要

OBJECTIVE

To study the flavonoids from Taxus Madia and determine the content of Taxol from different parts of Taxus Madia.

METHODS

Various column chromatographic techniques were applied for isolation and purification. The structrues were elucidated by physico-chemical property and spectral evidence. The analysis of Taxol was carried out on C18 (150 mm x 4.6 mm i. d. 5 microm). The mobile phase was MeOH-H2O (3:1). The flow-rate was 0.8 ml/min. The detection wave-length was 228 nm.

RESULTS

Three bifiavonyl compounds were isolated and identified as Sciadopitysin (Compound I), Ginkgetin (Compound II), 7,7",4'-Tri-O-Methylamentoflavone (Compound III). The contents of Taxol from branches and leaves, main root, fibrous root was 0.0308 mg/g, 0.02191 mg/g, 0.01983 mg/g respectively.

CONCLUSIONS

Compound I-III are obtained from Taxus Madia for the first time. The contents of Taxol is the highest in the part of branches and leaves, and then is the main root, the lowest is the fibrous root.

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