Canthin-6-one alkaloids from Eurycoma longifolia

Phytochemistry
1994.0

Abstract

Five new canthin-6-one alkaloids, 9,10-dimethoxycanthin-6-one, 10-hydroxy-9-methoxycanthin-6-one, 11-hydroxy- 10-methoxycanthin-6-one, 5,9-dimethoxycanthin-6-one and 9-methoxy-3-methylcanthin-5,6-dione were isolated from the bark and wood of Eurycoma longifolia, along with six known canthin-6-one alkaloids and two known beta-carboline alkaloids. Their structures were determined from spectroscopic data and other chemical evidence.

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