Answers are grounded in this paper and cite their sources.
The EtOH extract of the leaves of Kopsia teoi yielded the octacyclic alkaloids kopsinitarines A−D ( 1 − 4 ) and mersingines A and B ( 5 and 6 ), all possessing a novel cage carbon skeleton. The structures of the alkaloids were established by spectral methods and, in the case of kopsinitarine D ( 4 ), confirmed by X-ray analysis.
No takes yet. Share an insight, caveat, or question.
Kam et al. (1996) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: