Taxanes from the leaves of <Emphasis Type=Italic>Taxus cuspidata</Emphasis>

A new taxane, 13-oxobaccatin III (2), and five known taxanes, 10-deacetyl-13-oxobaccatin III (1), baccatin III (3), 7-epi-10-deacetyltaxol (4), 19-debenzoyl-19-acetyltaxinine M (5), and 5a-decinnamoyltaxagifine (6), were isolated from the leaves of the Japanese yew, Taxus cuspidate. Their structures were established on the basis of the analysis of their spectral data.     

Chemical constituents from the leaves of <Emphasis Type=Italic>Cinnamomum reticulatum</Emphasis>

Reticuol, a novel Cinnamomum sesquiterpenoid, has been isolated from Cinnamomum reticulatum Hay (Lauraceae), together with eight known compounds, p-hydroxybenzoic acid, isoanwulignan, 2,6-dimethyl1,7-octadiene-3,6-diol, a-tocopheryl quinone, kaempferol-3-O-(2″,4″-di-E-p-coumaroyl)-α-L-rhamnopyranoside, kaempferol-3-O-(3″,4″-di-E-p-coumaroyl)-α-L-rhamnopyranoside, pheophorbide a, and aristophyll C. The structure of reticuol was determined on the basis of spectroscopic analysis.