Abstract
Five new furoquinoline alkaloids, namely tecleabine ( 1), tecleoxine ( 2), isotecleoxine ( 3), methylnkolbisine ( 4) and chlorodesnkolbisine ( 5) were isolated from the aerial parts of Teclea nobilis, together with seven known furoquinoline derivatives; one acridone alkaloid, and one known flavanone. The structures of the alkaloids 1– 5 were established by 1D and 2D NMR spectral data, including COSY, HMQC and HMBC experiments, as well as HRMS.
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