Two new fluorenones from Dendrobium chrysotoxum.
Two new fluorenones have been isolated from the orchid Dendrobium chrysotoxum Lindl. and their structures established as 2,4,7-trihydroxy-5-methoxy-9-fluorenone and 2,4,7-trihydroxy-1,5-dimethoxy-9-fluorenone.
Yang
Hong
H
Department of Pharmacognosy, China Pharmaceutical University, Nanjing 210038, China.
Chou
Gui-Xin
GX
Wang
Zheng-Tao
ZT
Hu
Zhi-Bi
ZB
Xu
Luo-Shan
LS
D031667:Dendrobium / Q000737:chemistry*; D005449:Fluorenes / Q000737:chemistry* / Q000302:isolation & purification*; D013057:Spectrum Analysis
C485257:2,4,7-trihydroxy-1,5-dimethoxy-9-fluorenone; C485256:2,4,7-trihydroxy-5-methoxy-9-fluorenone; D005449:Fluorenes