Two New Compounds from Dendrobium candidum

Two new compounds were isolated from the stems of Dendrobium candidum: (R)-3,4-dihydroxy-5,4′,α-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....

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Veröffentlicht in:	Chemical & Pharmaceutical Bulletin 2008/10/01, Vol.56(10), pp.1477-1479
Hauptverfasser:	Li, Yan, Wang, Chun-Lan, Guo, Shun-Xing, Yang, Jun-Shan, Xiao, Pei-Gen
Format:	Artikel
Sprache:	eng
Schlagworte:	Chromatography, High Pressure Liquid Circular Dichroism Dendrobium - chemistry Dendrobium candidum dendrocandin A dendrocandin B Dioxanes - chemistry Dioxanes - isolation & purification Magnetic Resonance Spectroscopy Plant Stems - chemistry Spectrometry, Mass, Electrospray Ionization Spectrophotometry, Infrared Spectrophotometry, Ultraviolet Stilbenes - chemistry Stilbenes - isolation & purification
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Beschreibung
Zusammenfassung:	Two new compounds were isolated from the stems of Dendrobium candidum: (R)-3,4-dihydroxy-5,4′,α-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).
ISSN:	0009-2363 1347-5223
DOI:	10.1248/cpb.56.1477