Four fJavones, luteolin (1), tricin (2), luteolin 4/-O-β-D-glucoside (3) and luteolin 7-0-β-D-glucoside (4), four caffeoylquinates, 3,4-dicaffeoylquinic acid (5), 4,5-dicaffeoylquinic acid (6), ethyl 3,4-dicaffeoylquinate (7) and chlorogenic acid (8), as well as esculetin (9), and two catechols, caffeic acid (10) and protocatechuic acid (11), were isolated from the aerial parts of Vernonia patula. Their structures were determined by spectral methods and/or comparison with authentic samples.
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