Two new compounds from Dendrobium candidum.
Two new compounds were isolated from the stems of Dendrobium candidum: (R)-3,4-dihydroxy-5,4',alpha-trimethoxybibenzyl (1), named dendrocandin A; and 4-[2-[(2S,3S)-3-(4-hydroxy-3,5-dimethoxyphenyl)-2-hydroxymethyl-8-methoxy-2,3-dihydrobenzo[1,4]dioxin-6-yl]ethyl]-1-methoxyl benzene (2), dendrocandin B. Five previously known bibenzyls were also identified: 4,4'-dihydroxy-3,5-dimethoxybibenzyl (3), 3,4-dihydroxy-5,4'-dimethoxybibenzyl (4), 3-O-methylgigantol (5), dendrophenol (6), and gigantol (7).
Li
Yan
Y
Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Wang
Chun-Lan
CL
Guo
Shun-Xing
SX
Yang
Jun-Shan
JS
Xiao
Pei-Gen
PG
D002851:Chromatography, High Pressure Liquid; D002942:Circular Dichroism; D031667:Dendrobium / Q000737:chemistry*; D004146:Dioxanes / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D018547:Plant Stems / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013267:Stilbenes / Q000737:chemistry* / Q000302:isolation & purification
C532905:3,4-dihydroxy-5,4',alpha-trimethoxybibenzyl; C532906:4-(2-(3-(4-hydroxy-3,5-dimethoxyphenyl)-2-hydroxymethyl-8-methoxy-2,3-dihydrobenzo(1,4)dioxin-6-yl)ethyl)-1-methoxybenzene; D004146:Dioxanes; D013267:Stilbenes