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Note | Regular issue | Vol 60, No. 4, 2003, pp.917-924
Published online, 3rd March, 2003
DOI: 10.3987/COM-02-9663
Nortropane Alkaloids from the Leaves of Erythoxylum moonii

Khanzadi Fatima Khattak,* Atta-ur-Rahman, and M. Iqbal Choudhary

*International Centre for Chemical Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan

Abstract

Four new nortropane alkaloids have been isolated from the leaves of Erythroxylum moonii and identified as nortropane-3α-6β-7β-triol 3-benzoate 7- (2′-hydroxy-3′-phenylpropanoate) (1), nortropane-3α-7β-diol 7-trans- cinnnamate 3-propanoate (2), nortropane-3α-7β-diol 7-benzoate 3-(2′- methylpropanoate) (3), and nortropane-3α-7β-diol 3-(2′-methylpropanoate) 7-cis- (3′′,4′′,5′′-trimethoxycinnamate) (4). Additionally, five known bases are characterized as tropane-3α-7β-diol 7-benzoate (5), tropane-3α-7β-diol 3-phenylacetate (6), tropane-3α-7β-diol 3-benzoate (7), tropane-3α-6β-7β-triol 3-benzoate (8), and tropane-3α-yl 3-(3′,4′,5′-trimethoxybenzoate) (9). The structures for the compounds are proposed on the basis of spectroscopic evidences.