A comprehensive reinvestigation of chemical constituents from the rhizomes of Hedychium spicatum led to the isolation of two new labdane-type diterpene (1, 2), together with six known compounds (3-8). Their structures were established on the basis of extensive spectroscopic (IR, MS, 2D NMR) data analysis and by comparison with the spectroscopic data reported in the literature. In addition, all the isolates were tested for their cytotoxicity against the THP-1 (human acute monocytic leukemia), HL-60 (human promyelocytic leukemia), A-375 (human malignant melanoma) and A-549 (human lung carcinoma) cancerous cell lines.
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| http://dx.doi.org/10.1016/j.bmcl.2009.09.032 | DOI Listing |
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