Vieira, Paulo C.Yoshida, MassayoshiGottlieb, Otto R.Filho, Hipólito F.Paulino [UNESP]Nagem, Tanus J.Filho, Raimundo Braz2014-05-262014-05-261983-12-01Phytochemistry, v. 22, n. 3, p. 711-713, 1983.0031-9422http://hdl.handle.net/11449/132412The structure of juruenolide, a constituent of Iryanthera juruensis and I. ulei is revised to (2S, 3R, 4S)-3-hydroxy-4-methyl-2-(19′-piperonyl-1′-n-nonadecyl)-butanolide. The compound is epimeric at C-3 of the γ-lactone unit with grandinolide [(2S, 3S, 4S)-3-hydroxy-4-methyl-2- (19′-phenyl-1′-n-nonadecyl)-butanolide] from I. grandis. An extract of I. juruensis contained additionally juruenolide-B [(4S)-4-methyl-2-(19′-piperonyl-1′-n-nonadec-7′-enyl)-but-2-enolide]. Analogous products with heptadecyl and pentadecyl side chains co-occur with the respective nonadecyl derivatives. © 1983.711-713eng2-(ω-aryl-n-alkyl)-γ-lactones.grandinolideI. juruensisI. uleiIryanthera grandisjuruenolidesMyristicaceaeArtigo10.1016/S0031-9422(00)86967-8WOS:A1983QF31700015Acesso restrito2-s2.0-0000944974