Dimeric aporphine alkaloids of Phoenicanthus obliqua from Sri Lanka. |
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| Authors: | E M Wijeratne B Don Lankananda Y Tezuka T Nagaoka A A Gunatilaka |
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| Institution: | Southwest Center for Natural Products Research & Commercialization, Office of Arid Lands Studies, College of Agriculture and Life Sciences, University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706-6800, USA. kithsiri@ag.arizona.edu |
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| Abstract: | A new dimeric aporphine alkaloid, phoenicanthusine (1), and six known alkaloids were isolated from the stem bark of Phoenicanthus obliqua. The structure of 1 was elucidated by 1D ((1)H, (13)C) and 2D ((1)H-(1)H COSY, HMQC, HMBC, and NOESY) NMR and HRMS studies. Phoenicanthusine represents the first example of a N-6--C-4' and C-7--C-5' linked dimeric aporphine alkaloid. |
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