[Studies on chemical constituents in stem of Dendrobium chrysotoxum].
Atslēgvārdi
Abstrakts
OBJECTIVE
To investigate the chemical constituents of Dendrobium chrysotoxum.
METHODS
The chemical constituents were isolated by various column chromatographic methods and structurally elucidated by spectral evidences.
RESULTS
Ten compounds were obtained and identified as (+)-syringare sinol (1), 5alpha, 8alpha-epidioxy-24( R)-methycholesta-6, 22-dien-3beta-ol (2), trans-3-(4-hydroxy-3-methoxyphenyl)-acrylic acid octacosyl ester (3), defusin (4), 3, 4-dihydroxy benzoic acid (5), 3, 4-dimethoxy-benzoic acid (6), vanillic acid (7), 3, 4-dimethoxy-benzoic acid methyl ester (8), 3, 5-dibromo-2-aminobenzaldehyde (9), heptadecanoic acid 2, 3-dihydroxy-propyl ester (10).
CONCLUSIONS
Compounds 1, 2 and 6-10 were isolated from this plant for the first time.
