Carvotacetone derivatives and other constituents from representatives of the Sphaeranthus group

PHYTOCHEMISTRY（1991）

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摘要

Four species of the Sphaeranthus group afforded, in addition to known compounds, 12 new ent-labdane derivatives, seven carvotacetone derivatives and mixtures of myo-inositol esters. Structures were elucidated by high field NMR techniques. The chemotaxonomic aspects are discussed.

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BLEPHARISPERMUM-ZANGUEBARICUM, ATHROISMA-GRACILE,,SPHAERANTHUS-CYATHULOIDES, S-CONFERTIFOLIUS,COMPOSITAE,DITERPENES,ENT-LABDANES,MONOTERPENES,CARVOTACETONE DERIVATIVES

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