Three new sesquiterpenoids, isodauc-7(14)-en-6alpha,10beta-diol (1), 10beta-hydroxyisodauc-6-en-14-al (2), and (7S(*))-opposit-4(15)-en-1beta,7-diol (4), along with ten known compounds have been isolated from the aerial parts of Senecio argunensis. Their structures were established by means of detailed spectroscopic analysis including IR, HR-MS, and 1D NMR and 2D NMR data. The sesquiterpenoids were assayed against Escherichia coli, Staphylococcus aureus and Bacillus subtilis. Compounds 4 exhibited weak antibacterial activity against Escherichia coli and Bacillus subtilis.
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Sesquiterpenoids and other constituents from Senecio argunensis.
Chem Pharm Bull (Tokyo)
July 2010
Marine College, Shandong University at Weihai, Weihai, P. R. China.
Three new sesquiterpenoids, isodauc-7(14)-en-6alpha,10beta-diol (1), 10beta-hydroxyisodauc-6-en-14-al (2), and (7S(*))-opposit-4(15)-en-1beta,7-diol (4), along with ten known compounds have been isolated from the aerial parts of Senecio argunensis. Their structures were established by means of detailed spectroscopic analysis including IR, HR-MS, and 1D NMR and 2D NMR data. The sesquiterpenoids were assayed against Escherichia coli, Staphylococcus aureus and Bacillus subtilis.
View Article and Find Full Text PDF[Studies on the antioxidant activities of leaves from Senecio argunensis].
Zhong Yao Cai
September 2008
Key Laboratory of Ministry of Education for Medicinal Plant Resource and Natural Pharmaceutical Chemistry, Xi'an 710062, China.
Objective: To study antioxidant activities of different extracts of Senecio argunensis.
Methods: The antioxidant activities of S. argunensis extracts with acetoacetate, n-Butanol and water were detected by DPPH * free radical-scavenging method and beta-carotene/linoleic acid system.
Two new flavonoid alkaloids from Senecio argunensis.
J Asian Nat Prod Res
March 2009
Key Laboratory of Modern Chinese Medicines, Ministry of Education, Research Department of Pharmacognosy, China Pharmaceutical University, Nanjing, China.
Two new flavonoid alkaloids, 8-(2''-pyrrolidinone-5''-yl)-quercetin (1) and 8-(2''-pyrrolidinone-5''-yl)-isorhamnetin (2), were isolated from the herb of Senecio argunensis. Their structures were elucidated by spectral analysis.
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