taxinine/taxus wallichiana

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Taxines from the needles of Taxus wallichiana.

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Prijava / prijava

A taxine, 5 alpha O-(3'-dimethylamino-3'-phenylpropionyl) taxinine M (1) together with two known compounds 7-O-acetyltaxine A (2) and 2 alpha-acetoxy-2' beta-deacetylaustrospicatine (3) were isolated from the needles of the Himalayan yew, Taxus wallichiana Zucc. Their structures were elucidated on

Minor taxoids from Taxus wallichiana.

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Prijava / prijava

The needles of Taxus wallichiana afforded a new analogue of taxinine M [1a] and two derivatives of brevifoliol [2a, 3a]. The conformation of 3a was investigated by nmr spectroscopy with the aid of variable-temperature experiments and in situ reactions.

Taxoid from the needles of the Himalayan yew Taxus wallichiana with cytotoxic and immunomodulatory activities.

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Prijava / prijava

The needles of Taxus wallichiana gave a taxoid 1-hydroxy- 2-deacetoxy-5-decinnamoyl-taxinine j, whose structure has been established by spectroscopic data and confirmed by X-ray crystallography. The taxoid possesses significant cytotoxic and immunomodulatory activity.

Dantaxusins A and B, two new taxoids from Taxus yunnanensis.

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Two new taxane diterpenes, dantaxusin A [5 alpha-cinnamoyloxy-2 alpha,7 beta,13 alpha-triacetoxy-2(3-->20)abeo-taxa-4(20),11-diene-9,10-dione (1)] and dantaxusin B [5 alpha-cinnamoyloxy-9 alpha-hydroxy-10 beta,13 alpha-diacetoxytaxa-4(20),11-diene (2)], were isolated from an ethanol extract of the

Two new taxane diterpenoids from the seeds of the Chinese yew, Taxus yunnanensis.

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Prijava / prijava

A new taxoid and a taxinine analogue were isolated from the seeds of the Chinese yew, Taxus yunnanensis. The structures were established as 13 alpha-acetoxy-5 alpha-(3'-dimethylamino-3'-phenyl)-propionyloxy-11(15-->1)-abeotaxa- 4(20),11-diene-9 alpha, 10 beta-diol and 2 alpha-acetoxy-5

[Studies on the chemical constituents of Taxus yunnanensis].

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Prijava / prijava

The ethanolic extract of the bark of Taxus yunnanensis Cheng et L. K. Fu. showed significant antineoplastic effect on the transplantable tumors in mice. The life survival of P388 leukemic bearing mice was increased (84%) and the growth of B16 melanoma in mice was inhibited (53%). From this extract

Simultaneous determination of seven taxoids in rat plasma by UPLC-MS/MS and pharmacokinetic study after oral administration of Taxus yunnanensis extracts.

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Prijava / prijava

A rapid, sensitive and reliable method has been developed and validated for the simultaneous determination of seven taxoids including 10-deacetylbaccatin III (10-DAB III), baccatin III, 5-epi-canadensene, taxinine M, 10-deacetyltaxol (10-DAT), cephalomannine and paclitaxel in rat plasma using

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