作者:Katsuyoshi Mitsunaga、Kazuo Koike、Tomoko Tanaka、Youko Ohkawa、Yuko Kobayashi、Takako Sawaguchi、Taichi Ohmoto
DOI:10.1016/s0031-9422(00)90609-5
日期:1994.2
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.