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Chemical investigation of ceylonese plants part 21 extractives of pentadesma butyracea guttiferae



Chemical investigation of ceylonese plants part 21 extractives of pentadesma butyracea guttiferae



Journal of the Chemical Society Perkin Transactions I (1): 11-14



From the bark and timber extracts of P. butyracea Sabine the following compounds were isolated: .beta.-amyrin acetate, .beta.-amyrin, .beta.-sitosterol, 1,3,5-trihydroxy-2-methoxyxanthone, jacareubin, osajaxanthone and a new xanthone, pentadesmaxanthone, identified as 5,9,11-trihydroxy-3,3-dimethyl-6,8-bis-(3-methylbut-2-enyl)-3H,12H-pyrano[3,2-a]xanthen-12-one.

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