CONSTITUENTS

TAXANES and TAXOIDS

Over 100 structurally related taxanes and taxoids have been isolated from various Taxus species, most of which are contained in Taxus brevifolia. Yew trees are the only plants on earth that produce taxanes.

FLAVONOIDS - FLAVONOLS

quercetin, rhamnetin, sciadopitysin, kaempferol, amentoflavone, sequoiaflavone, sotetsuflavone, ginkgetin, taxifolin.

STEROIDS - PHYTOSTEROLS

beta-sitosterol, daucosterol, ponasterone-A

LIGNANS

lariciresinol, taxiresinol

CAROTENOIDS

xanthophyll, zeaxanthin, violaxantin, neoxanthin, eschsoltzaxanthone

PHENOLS

betuligneol

BENZENOID

rhododendrol

Constituents list compiled from:

Napralert Database, College of Pharmacy, Chicago, IL. - 1993
Taxol Science and Applications (page 322, Naturally Occuring Taxanes with Antitumor Activity), Suffnes (1995), CRC Press, Boca Raton, FL
Taxus: the Genus Taxus (Medicinal and Aromatic Plants - Industrial Profiles)

Characteristics of Extract Components (page 153)

Edited by Hideji Itokawa and Kuo-Hsiung Lee

Taylor and Francis Publishing, New York, NY

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