Four new taxoids from Taxus cuspidata var. nana.
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.
Morita
H
H
Gonda
A
A
Wei
L
L
Yamamura
Y
Y
Wakabayashi
H
H
Takeya
K
K
Itokawa
H
H