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    • Two New Antiprotozoal 5-Methylcoumarins from Vernonia brachycalyx 

      Oketch-Rabah, HA; Lemmich, E; Dossaji, SF; Thor, GT; Carl, EO; Claus, C; Arsalan, K; Brøgger, SC (Department of Chemistry, 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. ...