19β → 28-Lactonization of Pomonic Acid from Lantana camara roots
- 1 August 2000
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 55 (8) , 768-770
- https://doi.org/10.1515/znb-2000-0815
Abstract
Lantana camara L. var. aculeata yielded a triterpenoid, pomonic acid (1). The acid-catalyzed lactonization of this γ-hydroxy acid afforded a rearranged lactone 3, the structure of which was as signed by detailed 2D-NMR studies. A reaction mechanism involving a 1,3-butadiene intermediate is proposed.Keywords
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