Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
THE REVISED STRUCTURE OF FURANOFUKINOL, A CONSTITUENT FROM PETASITES JAPONICUS MAXIM. RHIZOMES
Keizo NayaYasuo MakiyamaTakashi MatsuuraNobuo IiHajime NaganoTakeyoshi Takahashi
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1978 Volume 7 Issue 3 Pages 301-304

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Abstract

The structure of furanofukinol, a constituent of Petasites japonicus Maxim., proposed previously as 3α,6β-dihydroxyfuranoeremophilane (V-a) should be revised to 3α,6β-dihydroxyfuranoeremophilane (I) by the PMR study of 3-O-angeloyl-6-O-acetylfuranofukinol (VIII) and by the chemical conversion of furanofukinol to 3β-hydroxyeremophilanes (X-a,b). The structures of the two related sesquiterpenes, isolated from Farfugium hiberniflorum Kitam., must therefore be revised to 3β-angeloyloxy-6β-hydroxyfuranoeremophilane (VII) and 3β-angeloyloxy-6β-acetoxyfuranoeremophilane (VIII).

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