Two diastereomeric 2",3"-dibromo cephalomannines and their two corresponding 7-epimers were obtained by treatment of extracts of Taxus yunnanensis with bromine solution under mild conditions. Treatment of the same extract with chlorine solution yielded four diasteromeric
We isolated three secondary metabolites by silica gel column chromatography from endophytic fungus 12.3.2 that was isolated from Taxus yunnanensis and could produce taxanes. They were identified as cembrene (3,7,11-trimethyl-14-(1-methylethyl)-1,3,6,10-cyclotetradecatetraene), diisooctyl phthalate
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