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Four new fluorenone alkaloids and one new dihydroazafluoranthene alkaloid from Caulophyllum robustum Maxim
Xiao-Ling Wang1, Bing-Rui Liu, Chien-Kuang Chen
1Key Laboratory of Phytochemistry of Shaanxi Province, Baoji University of Arts and Sciences, Baoji 721013, China. xlwangwang@163.com
Fitoterapia
|May 21, 2011
Abstract:
Four new fluorenone alkaloids, caulophylline A-D (1-4), and one new dihydroazafluoranthene alkaloid, caulophylline E (5) were isolated from the roots of Caulophyllum robustum Maxim. Their structures were elucidated by spectroscopic analysis. Among the isolated alkaloids, Caulophylline E showed good scavenging effects against DPPH radical with IC(50) of 39 μM.
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