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【期刊论文】Bieremoligularolide and eremoligularin, two novel sesquiterpenoids from Ligularia muliensis
高坤, Qiu-Hong Wua, Chun-Ming Wangb, Sheng-Gao Chenga and Kun Gaoa, *
Tetrahedron Letters 45(2004)8855-8858,-0001,():
-1年11月30日
From the roots of Ligularia muliensis, a novel bieremophilanolide and a new eremophilanolide have been isolated and their structures were elucidated by spectroscopic techniques, including HRMS, IR, UV, 1D-NMR, 2D-NMR, and CD spectra.
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【期刊论文】New Eremophilenolides from Ligulariopsis shichuana
高坤, Wenshu Wang, Kun Gao, and Zhongjian Jia*
J. Nat. Prod. 2002, 65, 714-717,-0001,():
-1年11月30日
Four new eremophilenolides, 1-4, have been isolated from the whole plant of Ligulariopsis shichuana. Their structures were elucidated by spectroscopic methods, including 2D NMR experiments. Structures of compounds 1 and 2 were unequivocally established by X-ray diffraction experiments. All of these sesquiterpenes have eremophilane skeletons with 7(11)-en-8(12) lactone units. Compounds 1 and 2 showed moderate antibacterial activities against E. coli and B. subtilis.
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【期刊论文】Two New Diterpene Acetylxylosides from Aster veitchianus
高坤, Er Wei LI, Kun GAO*, Zhong Jian JIA*
Chinese Chemical Letters Vol. 15, No. 4, pp 425-427, 2004,-0001,():
-1年11月30日
Two new acetylxylosides, ent-manool-13-O-β-D-2'-acetylxylopyranoside (1) and entmanool 13-O-β-D-2', 4'-diacetylxylopyranoside (2) were isolated from Aster veitchianus. Their structures were elucidated by spectroscopic methods.
Aster veitchianus,, Compositae,, diterpene,, xylosides.,
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【期刊论文】Eremophilenolides and Other Constituents from the Roots of Liaularia saaitta
高坤
,-0001,():
-1年11月30日
Chemical investigation of the roots of Ligularia sagitta has resulted in the characterization of six eremophilenolides 6β,8βdimethoxy-1Oβ-hydroxyeremophil-7(11)-en-12,8a-olide (1), 6βan-geloyloxy-1Oβ-hydroxy-8β-methoxyeremophil-7(11)-en-12,8a-olide (2), 6/3-(2'-methylbutanoyloxy)-10β-hydroxy-8β-methoxy-eremophil-7(11)-en-12,8a-olide (3), 6β-angeloyloxy-1Oβ-hydro-xy-8a-methoxyeremophil-7(11)-en-12,8β-olide (4), 6β-(2'me-thylbutanoyloxy)-10β-hydroxy-8a-methoxyeremophil-7(11)-en-12.8β-olide (5) and 8β. lOβ-dihvdroxv-6β-methoxveremoohil-7(ll)-en-12,8a-olide (6), together with one monoterpene (3R,4R,65)-3,6-dihydroxy-l-menthene (7), two triterpenes lupeoi (8) and ursolic acid (9), and β-sitosterol (10). The structures of five new constituents (1-5) were elucidated by spectroscopic methods including 2D-NMR experiments. The compounds 1, 5 and 7 showed antibacterial activity by being assayed against Staphylococcus aureus, Bacillus subtilis and Escherichia coll.
Ligularia sagitta
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【期刊论文】Eudesmane derivatives and other constituents from Saussurea parviflora
高坤, Zhong-Duo Yang, Kun Gao, Zhong-Jian Jia*
Phytochemistry 62(2003)1195-1199,-0001,():
-1年11月30日
A survey of the whole plant of Saussurea parviflora afforded three compounds 11,12,13-trihydroxy-4 (15), 8-eudesmadiene-9-one, eudesman-813,12-olide-l-O-13-D-glucoside and 113,313-dihydroxyursa-9(11), 12-diene-3-octadecanoate, as well as 13 known compounds. Their structures were elucidated on the basis of spectral evidence, especially by using NMR spectroscopic techniques. In addition, encelin exhibited effective antitumor activity on L02, SMMC-7721 and HO-8910 cells.
Saussurea parviflora, Compositae, Eudesmane derivatives, Antitumor activity
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