β Scribed by A. San Feliciano; M. Medarde; J.M. Miguel del Corral; A. Aramburu; M. Gordaliza; A.F. Barrero
No coin nor oath required. For personal study only.
A new sesquiterpene lactone called aquatolide was isolated from the hexane extract of Asteriscus aquaticus. Its constitution and stereochemistry were deduced from spectroscopic data, mainly homonuclear and heteronuclear two-dimensional NMR correlations.
From the neutral part of a methanol deffated hexane extract of Asteriscus aquaticus L. (family, Compositae; Tribe, Inuleae), by repeated chromatography and crystallization, a small amount of a new substance 1 was isolatedt.
Its origin and the preliminar analysis of its spectroscopic properties, readily suggested the structure of a sesquiterpene lactone for the compound.
π SIMILAR VOLUMES
We wish to report the structure of psilostachyin, I, a new sesquiterpene lactone from Ambrosia psilostachyia, and its synthesis from coronopilin, VIII. Hers and Hogenauer (1) previously established the structure of coronopilin, a sesquiterpene lactone isolated from 5. psilostachyia obtained in Kansa