NEW INDOLE ALKALOIDS FROM MELODINUS HENRYI

作者:Kitajima, Mariko*; Ohara, Satoko; Kogure, Noriyuki; Wu, Yuqiu; Zhang, Rongping; Takayama, Hiromitsu
来源:Heterocycles, 2012, 85(8): 1949-1959.
DOI:10.3987/COM-12-12511

摘要

Two new indole alkaloids, melodinoxanine (1) and N-b-methylnortetraphyllicine (2), were isolated from the stems and leaves of Melodinus henryi growing in Yunnan, China. Melodinoxanine (1) is a unique oxindole alkaloid with an extra oxygen atom in the C-ring of a heteroyohimbine skeleton.