Conclusions
From the racemes ofC. xanthifolia Fresen. have been isolated a sesquiterpene lactone C16H20O4, the structural (+)-isomer of (−)-coronopilin, which has not been studied previously; structure I has been proposed for it.
Keywords
Petroleum Ether Lactone Acetic Anhydride Sodium Borohydride Sesquiterpene LactoneReferences
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