Abstract

Four new taxoids ( 1- 4), showing cytotoxic activity, have been isolated from the stems of Taxus cuspidata Sieb. et. Zucc. var. nana Rehder. Their structures were elucidated by extensive 2D NMR methods including (1)H- (1)H COSY, TOCSY, HMBC, HMQC, and phase sensitive ROESY spectra.

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