Bao Zhang, Hai-Hua Yuan, Jia Sun, Hang Xun, Jie Wang, Feng Qiu, Jian-Jun Wang, Xi Yao, Jin Wang, Wei Fan, Feng Tang
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Five new glycosides from the culms of Phyllostachys nigra var. henonis.
Five new glycosides, namely methyl 3-methoxybenzoate-4,5-di-O-β-D-glucopyranoside (1), (1aS,3aS,3R)-3-(4'-O-β-D-glucopyranosyl-3'-methoxyphenyl)-5,6-dioxa-bicyclo[3.3.0]octane-1-one (2), quinolin-4(1H)-one-3-O-β-D-glucopyranoside (3), 3-methoxy-propiophenone 4-O-(6'-β-D-xylopyranosyl)-β-D-glucopyranoside (4), methyl 3-methoxybenzoate 4-O-(6'-β-D-xylopyranosyl)-β-D-glucopyranoside (5), and one known compound, bambulignan B (6) were isolated from the culms of Phyllostachys nigra var. henonis. Their structures were determined using spectroscopic analysis. All compounds were evaluated for their DPPH radical scavenging activity. Compound 6 exhibited antioxidant activity with IC50 value of 59.5 μM (positive control, L-ascorbic acid, IC50 = 12.4 μM; 2,6-ditertbutyl-4-methyl phenol, IC50 = 11.8 μM).
期刊介绍:
The Journal of Asian Natural Products Research (JANPR) publishes chemical and pharmaceutical studies in the English language in the field of natural product research on Asian ethnic medicine. The journal publishes work from scientists in Asian countries, e.g. China, Japan, Korea and India, including contributions from other countries concerning natural products of Asia. The journal is chemistry-orientated. Major fields covered are: isolation and structural elucidation of natural constituents (including those for non-medical uses), synthesis and transformation (including biosynthesis and biotransformation) of natural products, pharmacognosy, and allied topics. Biological evaluation of crude extracts are acceptable only as supporting data for pure isolates with well-characterized structures.
All published research articles in this journal have undergone rigorous peer review, based on initial editor screening and anonymized refereeing by at least two expert referees.