三尖杉属植物的生物碱研究及其化学分类问题

本文根据近年对于三尖杉属植物的生物碱化学研究，并联系到有关本属的其他化学成分、形态解剖、分类、化石和地理分布等资料,讨论了本属植物的分类学问题。 

A study of the alkaloids in Cephalotaxus and their bearing on the chemotaxonomic problems of the genus

The family Cephalotaxaceae contains so far known only 1 genus with 8 species and possibly 2-3 varieties mostly native in China.      In recent years, some ester alkaloids of Cephalotaxus have been shown significant activity in a variety of experimental leukemia systems. 6 species (including varieties) of the genus have been investigated for their alkaloids.      The detected alkaloids in Cephalotaxaceous plants, from the chemotaxonomic point of view, may be of some significance to the plant systemstics.  Our present study has indicated that:       (1)  The species C. sinensis and C. fortunei (C. oliveri ?) are chemically considered to be more primitive than others, while C. harringtonia, C. hainanensis and C. wilsoniana (including C. mannii?) seem to be derived.       (2)  Chemical evidence has suggested that the genus Cephalotaxus be accorded a family rank.       (3)  On the basis of morphology, anatomy, embryogeny, geographical distribution etc., the recent findings in the chemistry of Cephalotaxaceae support the inclusion of Cephalotaxaceae, Taxaceae and Podocarpaceae in Taxineae of Coniferales.       (4)  C. fortunei, C. hainanensis and C. oliveri (C. harringtonia) contain richer ester alkaloids than other species of the genus. C. fortunei which has a wide distribu- tion and great amount in many provinces of China, may prove to  be a good new resource for antitumor medicine.