Journal
BIOORGANIC & MEDICINAL CHEMISTRY
Volume 17, Issue 6, Pages 2215-2218Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2008.10.092
Keywords
Cardenolide; Glycoside; Antiproliferative activity; NMR; COSY; A2780; U937; Biodiversity; Elaeodendron; Madagascar
Funding
- FIC NIH HHS [U01 TW000313, U01 TW000313-11, U01 TW000313-14, U01 TW000313-12, U01 TW000313-13] Funding Source: Medline
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Bioassay-guided fractionation of an ethanol extract of a Madagascar collection of Elaeodendron alluaudianum led to the isolation of two new cardenolide glycosides (1 and 2). The H-1 and C-13 NMR spectra of both compounds were fully assigned using a combination of 2D NMR experiments, including H-1-H-1 COSY, HSQC, HMBC, and ROESY sequences. Both compounds 1 and 2 were tested against the A2780 human ovarian cancer cell line and the U937 human histiocytic lymphoma cell line assays, and showed significant antiproliferative activity with IC50 values of 0.12 and 0.07 mu M against the A2780 human ovarian cancer cell line, and 0.15 and 0.08 mu M against the U937 human histiocytic lymphoma cell line, respectively. (C) 2008 Elsevier Ltd. All rights reserved.
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