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| TAXAYUNTIN A,B,C AND D----FOUR NEW TETRACYCLIC TAXANES FROM TAXUS YUNNANENSIS | |
| 摘 要： | Four new taxane diterpenoids were isolated fromthe bark of Taxus yunnanensis.Their structures wereelucidated as the new skeleton with 5/7/6/4 membered ringsby spectral analysis and 2D NMR shift correlationexperiments. |
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