AMIDES OF OTTONIA CORCOVADENSIS

Article abstract of DOI:10.1016/0031-9422(81)80027-1

Key Word Index-Ottonia corcovadensis; Piperaceae; amides; piperovatine; piperlonguminine; isopiperlonguminine; corcovadine; isocorcovadine; 1H NMR and mass spectrometry.Abstract-Five amides were isolated from the roots of Ottonia corcovadensis.Two are the known piperlonguminine and piperovatine.The other three are new and their structures are: (2Z,4Z)-N-isobutyl-5-(3,4-methylenedioxyphenyl)-penta-2,4-dienoic amide for isopiperlonguminine; (2E,4E)-N-(2-methyl-2-acetoxypropyl)-5-(3,4-methylenedioxyphenyl)-penta-2,4-dienoic amide for corcovadine; and (2Z,4Z)-N-(2-methyl-2-acetoxypropyl)-5-(3,4-methylenedioxyphenyl)-penta-2,4-dienoic amide for isocorcovadine.