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Studies on the chemical constituents of Cirsium japonicum DC

Zhi, F.; Kong, L-yi.; Peng, S-xun.

Yao Xue Xue Bao 38(6): 442-447

2003

ISSN/ISBN: 0513-4870
PMID: 14513805
Document Number: 563772
Aim: In order to look for new bioactive compounds, investigation on the chemical constituents, especially on the typical polyacetylenes from the rhizomes of C. japonicum was carried out. Methods: Chromatographic techniques including silica column chromatography and preparative silica thin-layer chromatography were used to separate and purify the constituents. Their structures were elucidated by physico-chemical properties and spectral analyses including UV, IR, 1HNMR, 13CNMR, HMQC, HMBC and HREIMS. Results: Twelve compounds were isolated from the rhizomes of C. japonicum, and their structures were identified as cis-8, 9-epoxy-heptadeca-1-ene-11, 13-diyne-10-ol (1), ciryneol A (2), 8,9,10-triacetoxy-heptadeca-1-ene-11,13-diyne (3), ciryneone F (4), cireneol G (5), ciryneol H (6), ciryneol C (7), p-coumaric acid (8), syringin (9), linarin (10), beta -sitosterol (11) and daucosterol (12). Conclusion: Compounds 4, 5 and 6 are new compounds, compound 3 is a new natural product and compound 8 was isolated from this plant for the first time.

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