Structure Identification: |
Zhongguo Zhong Yao Za Zhi. 2010 Jun;35(11):1421-4. | Chemical constituents from stem barks of Vernonia cumingiana.[Pubmed: 20822012] | The chemical constituents from the stem barks of Vernonia cumingiana were investigated.
METHODS AND RESULTS:
Various chromatographic techniques such as silica gel chromatography, Sephadex LH-20, ODS column chromatography and HPLC were used to isolate and purify the constituents. The structures were elucidated by spectral methods. Twelve compounds were isolated from the 95% ethanol extract and their structures were elucidated as methyl 3,5-dicaffeoylquinate (1), mEthyl 3,4-dicaffeoylquinate (2), Ethyl 3,4-dicaffeoylquinate (3), methyl 3,4,5-tricaffeoylquinate (4), stigmasterol (5), alpha-spinasterol (6), beta-sitosterol (7), 24-methylene-lanosta-9 (11)-en-3beta-acetate (8), ethyl gallate (9), di-n-butyl-phthalate (10), stearic acid (11) and palmitic acid (12).
CONCLUSIONS:
Compounds 1-12 were isolated from this plant for the first time. |
|