FURANOEREMOPHILANES FROM PETASITES NIVEUS: HIGH SOLVOLYTIC REACTIVITY AT THE C-6Β POSITION BEARING AN Α,Β-UNSATURATED ESTER GROUP

Article abstract of DOI:10.1016/0031-9422(80)85061-8

Rhizomes and roots of Petasites niveus gave some new cis-fused, unstable furanoeremophilanes bearing the senecioyloxy group either at C-2β or at C-3β and C-6β, besides the known, unstable 2β-angeloyloxy-10β-H-furanoeremophilane (furanojaponin) and 3β,6β-d