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1. New lanostane-type triterpene acids from wolfiporia extensa.

Author

Gaimei She, Nailiang Zhu, Shuai Wang, Yang Liu, Yinying Ba, Changqing Sun, and Renbing Shi

Subjects
*TRITERPENES, *POLYPORACEAE, *SPLEEN, *METABOLITES, *SPECTRUM analysis
Abstract

Backgroud: Dried sclerotia of Wolfiporia extensa (Polyporaceae) is used to invigorate the spleen and to tranquilize the mind in Chinese herbal medicine. Lanostane-type triterpene acids were regard as major secondary metabolites from dried sclerotia of W. extensa. Results: Three new lanostane-type triterpene acids, 3-epi-benzoyloxyl-dehydrotumulosic acid (1), 3-epi-(3'-O-methyl malonyloxy)-dehydrotumulosic acid (2) and 3-epi-(3'-hydroxy-3'-methylglutaryloxyl)-dehydrotumulosic acid (3), were isolated from the sclerotia of W. extensa, together with 3 known lanostane derivatives (4-6). Their structures were elucidated on the basis of spectroscopic analysis, including 1D and 2D-NMR techniques .Conclusion: Six lanostane derivatives including three new triterpene acids and three known compounds were reported from the sclerotia of W. extensa in this paper. [ABSTRACT FROM AUTHOR]

Published
2012
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2. Elsholtzia: phytochemistry and biological activities.

Author

Zhiqin Guo, Zizhen Liu, Xiaohong Wang, Weirui Liu, Rui Jiang, Ruiyang Cheng, and Gaimei She

Subjects
MEDICINAL plants, BOTANICAL chemistry, FLAVONOIDS, PHYTOCHEMICALS, PHENYLPROPANOIDS, PSYCHOTROPIC plants
Abstract

Plants of the genus Elsholtzia (Lamiaceae) have a long history of medicinal use in folk. The phytochemical investigations revealed the presence of flavonoids, phenylpropanoids, terpenoids, and other compounds. Abundant volatile components are also identified. Pure compounds, volatile constituents and crude extracts from the genus exhibited a wide spectrum of in vitro and in vivo pharmacological activities. The aims of this review hopefully provide comprehensive information on the distribution, phytochemistry, volatile components, and pharmacological research of Elsholtzia for exploring the potential and advance researches. [ABSTRACT FROM AUTHOR]

Published
2012
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3. New monocyclic monoterpenoid glycoside from Mentha haplocalyx Briq

Author

Chao Xu, Gaimei She, and Bin Liu

Subjects
chemistry.chemical_classification, Chemistry, Chemical engineering, Chemistry(all), Aqueous acetone, Glycoside, Organic chemistry, General Chemistry, Preliminary Communication, Mentha haplocalyx, QD1-999
Abstract

Two new monocyclic monoterpenoid glycosides, rel-(1R,2S,3R,4R) p-menthane-1,2,3-triol 3-O-β-D-glucopyranoside (1) and rel- (1S,2R,3S) terpinolene-1,2,3-triol 3-O-β-D-glucopyranoside (2) were isolated from aqueous acetone extract of the aerial parts of Mentha haplocalyx Briq.. Their structures were elucidated through spectral analysis using MS and NMR spectrometers.

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4. New lanostane-type triterpene acids from wolfiporia extensa

Author

Shuai Wang, Yinying Ba, Renbing Shi, Yang Liu, Nailiang Zhu, Changqing Sun, and Gaimei She

Subjects
chemistry.chemical_classification, Traditional medicine, biology, Chemistry(all), General Chemistry, Wolfiporia extensa, biology.organism_classification, Lanostane, chemistry.chemical_compound, Chemistry, Triterpene, chemistry, QD1-999, Polyporaceae, Research Article
Abstract

Backgroud Dried sclerotia of Wolfiporia extensa (Polyporaceae) is used to invigorate the spleen and to tranquilize the mind in Chinese herbal medicine. Lanostane-type triterpene acids were regard as major secondary metabolites from dried sclerotia of W. extensa. Results Three new lanostane-type triterpene acids, 3-epi-benzoyloxyl-dehydrotumulosic acid (1), 3-epi-(3′-O-methyl malonyloxy)-dehydrotumulosic acid (2) and 3-epi-(3′-hydroxy-3′-methylglutaryloxyl)-dehydrotumulosic acid (3), were isolated from the sclerotia of W. extensa, together with 3 known lanostane derivatives (4–6). Their structures were elucidated on the basis of spectroscopic analysis, including 1D and 2D-NMR techniques. Conclusion Six lanostane derivatives including three new triterpene acids and three known compounds were reported from the sclerotia of W. extensa in this paper.

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