Journal of Natural Products 2008-Nov
Actin-aggregating cucurbitacins from Physocarpus capitatus.
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Abstract
Bioassay-guided fractionation of Physocarpus capitatus yielded two new cucurbitacins (3 and 4) along with the known cucurbitacin F (1) and dihydrocucurbitacin F (2). Preliminary mechanism of action studies indicate that the cucurbitacins cause actin aggregates and inhibit cell division.