Asteriscunolides A, B, C and D, the first humulanolides; Two pairs of conformationally stable stereoisomers

A. San Feliciano, A. F. Barrero, M. Medarde, J. M. Miguel del Corral, A. Aramburu Aizpiri, F. Sánchez-Ferrando

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37 Citations (Scopus)

Abstract

Following a preliminary comunication on Asteriscunolide A (the first reported natural humulanolide), three more configurationally and/or conformationally isomeric Asteriscunolides ( B, C and D ) from the same plant (Asteriscus aquaticus L.) are described. The absolute configurations and the stable conformations of all four Asteriscunolides are established by an array of spectroscopic methods (CD, 1H and 13C NMR) without resorting to X ray analysis. © 1984.
Original languageEnglish
Pages (from-to)873-878
JournalTetrahedron
Volume40
Issue number5
DOIs
Publication statusPublished - 1 Jan 1984

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