Phenolic Constituents of Knautia arvensis Aerial Parts
2011 ◽
Vol 6
(11)
◽
pp. 1934578X1100601
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Keyword(s):
2D Nmr
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A new C-6 flavone glycoside (6), together with seven known compounds, cryptochlorogenic acid (1), chlorogenic acid (2), 2- O- trans-caffeoylhydrocitric acid (3), isovitexin 7-β-D-glucopyranoside (4), 7,4′-dihydroxy-5-methoxyflavone-6- C-β-D-glucopyranoside (5), 3,5- O-dicaffeoylquinic acid (7) and 4,5- O-dicaffeoylquinic acid (8), were isolated from the aerial parts of Knautia arvensis. Their structures were elucidated by extensive spectroscopic methods including 1D- (1H, 13C and TOCSY) and 2D-NMR (DQF-COSY, HSQC, HMBC) experiments, as well as ESIMS analysis. Compounds 1, 3-5 and 8 are reported for the first time in Knautia arvensis.
2013 ◽
Vol 8
(4)
◽
pp. 1934578X1300800
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2019 ◽
Vol 57
(2)
◽
pp. 162
1998 ◽
Vol 53
(11-12)
◽
pp. 1090-1092
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Keyword(s):
2003 ◽
Vol 58
(9-10)
◽
pp. 704-707
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