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    • A cytotoxic dimeric furanoheliangolide from Piptocoma rufescens 

      Ren, Yulin; Jiménez, Francisco; García, Ricardo; Mejía, Milciades; Chai, Heebyung; Farnsworth, Norman R.; Soejarto, Djaja D.; Kinghorn, A. Douglas (Elsevier, 2013-10)
      A new sesquiterpene lactone, rufescenolide C (1), the first furanoheliangolide dimer, was isolated from the leaves of Piptocoma rufescens, collected in the Dominican Republic. Its structure was determined by analysis of ...