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Note | Regular issue | Vol 63, No. 2, 2004, pp.383-387
Published online, 21st November, 2003
DOI: 10.3987/COM-03-9927
A New diterpene of Leonotis nepetaefolia

Dionne M. Boalino and Winston F. Tinto*

*Laboratory of Bioorganic Chemistry, Department of Biological & Chemical Sciences, University of the West Indies, Cave Hill Campus, P.O. Box 64, Bridgetown, Barbados


A new labdane diterpenoid, leonotinic acid (1), possessing an α,β-butenolide unit, was isolated from the aerial parts of Leonotis nepetaefolia. It was identified on the basis of 1D and 2D NMR including 1H-1H COSY, HSQC, HMBC and T-ROESY spectroscopic techniques.