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Article
Chemical shift assignments of two oleanane triterpenes fromEuonymus hederaceus
1H-NMR and13C-NMR assignments of 12-oleanene-3,11-dione (compound 1) were completely described for the first time through conventional 1D NMR and 2D shift-correlated NMR experiments using
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Article
A new germacranolide fromCarpesium cernuum
As a part of our interest in biologically active germacranolides from the genusCarpesium (Compositae), we have investigated the constituents ofCarpesium cernuum. This paper reports the isolation and structural el...
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Article
Affinity ultrafiltration of DNA topoisomerases-targeted compounds determined with HPLC/ESI-MS for drug candidate screening
A method of screening assay is demonstrated. The approach is based on the affinity of antitumor candidates for topoisomerases. In this method, antitumor candidates are fished out using topoisomerases as target...
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Article
Study on the chemical constituents ofEuonymus alatus (Thunb.) Sleb
This phytochemical study onEuonymus alatus (Thunb.) Sleb. (Celestrceae) yielded two compounds: a new compound, 2,3-dihydroxypropanyl hentetracosanate and a known compound: neozeaxanthin A. Their structures were e...
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Article
A novel lactam fromDelphinium caeruleum
The structure of a novel lactam(I) isolated fromDelphinium caeuleum Jacq. ex Camb was determined by spectral data.