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Two New Antiprotozoal 5-Methylcoumarins from Vernonia brachycalyx
(1997)
Two new isomeric 5-methylcoumarins, 2‘-epicycloisobrachycoumarinone epoxide (1) and cycloisobrachycoumarinone epoxide (2), have been isolated from the roots of Vernonia brachycalyx by means of bioactivity-guided fractionation. ...