Phytochemistry p. 799 - 802 (1994)
Update date:2022-08-02
Topics:
Mitsunaga, Katsuyoshi
Koike, Kazuo
Tanaka, Tomoko
Ohkawa, Youko
Kobayashi, Yuko
et al.
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 β-carboline alakloids.Their structures were determined from spectroscopic data and other chemical evidence.
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