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Antiprotozoal activity and cytotoxicity of novel 1,7-dioxadispiro[5.1.5.2]pentadeca-9,12-dien-11-one derivatives from Amomum aculeatum

Heilmann, Jörg ; Mayr, Stefan ; Brun, Reto ; Rali, Topul ; Sticher, Otto



Abstract

Cytotoxicity against the KB cancer cell line as a lead bioactivity-guided fractionation of the petroleum ether ext. of rhizomes of Amomum aculeatum RoxB. led to the isolation of three novel dioxadispiro[5.1.5.2]-pentadeca-9,12-dien-11-one derivs. The structures of aculeatin A, aculeatin B, and aculeatin C were established as rel-(2R,4R,6S)- and ...

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