期刊
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
卷 879, 期 13-14, 页码 1023-1028出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jchromb.2011.02.050
关键词
Scutellaria baicalensis Georgi; Stems and leaves; Flavonoids; Global qualitative analysis; HPLC-UV/MS; NMR
资金
- National 973 project [2006CB504701]
- National 863 Research Foundation [2010AA023001]
- National Natural Science Foundation of China [20927005, 20875028, 20080542003, 2008 [890]]
- Science Research Foundation of Hunan province [05k009]
Scutellaria baicalensis Georgi (S. baicalensis), a perennial herb of the Labiatae family, is a well-known traditional Chinese medicine. In the present study, a comprehensive qualitative analysis of flavonoids in the stems and leaves of S. baicalensis was performed. Under the optimized experimental conditions, 21 flavonoids were clearly detected. 17 of them were successfully identified based on the on-line UV and MS(n) data and were sequentially confirmed by the literature search. The rest 4 flavonones, which were not on-line identified, were successfully isolated and were identified by 1D and 2D NMR. One of them, 5,6,7,3',4'-pentahydroxy flavanone-7-O-glucuronide (2) is a new compound. (C) 2011 Elsevier B.V. All rights reserved.
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