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Planta Med 1975; 27(1): 19-23
DOI: 10.1055/s-0028-1097755
DOI: 10.1055/s-0028-1097755
DE NOUVEAUX ALCALOÏDES QUATERNAIRES DU STRYCHNOS USAMBARENSIS
New quaternary alkaloids from Strychnos usambarensisFurther Information
Publication History
Publication Date:
14 January 2009 (online)
Abstract
We have isolated and identified three quaternary monomeric alkaloids from barks of Strychnos usambarensis roots. Besides Macusine–B, previously found in Strychnos toxifera, two new products are described: O–methyl–Macusine–B and O–methyl-dihydro–Macusine–B. It is not easy to discuss the origin of these last alkaloids that take form perhaps during the extraction. The purification is very laborious because Strychnos usambarensis contains more than sixty alkaloids.