title: 1H and 13C assignments of three new drimenes from Iresine diffusa Humb. & Bonpl. ex Willd.
abstract: The structure elucidation and (1)H and (13)C assignments of iresin (1) and three new drimenes, 3beta,14-dihydroxy-Delta(7, 8)-drimen-11,12-acetonide (2), 3beta,7beta,14-trihidroxy-Delta(8, 9)-drimen-11,12-olide (3) and 3beta,7alpha,14-trihydroxy-Delta(8, 9)-drimen-11,12-olide (4), isolated from the aerial parts of the medicinal plant Iresine diffusa Humb. & Bonpl. ex Willd. are reported.
authors.affiliation: Centro de Investigaciones Químicas de la Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Chamilpa 62210, Cuernavaca, Mor., México.
authors.forename: María Yolanda
authors.initials: MY
authors.lastname: Rios
authors.forename: Laura Alvarez
authors.initials: LA
authors.lastname: Berber
mesh_terms: D015107:4-Butyrolactone / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D002247:Carbon Isotopes; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards; D008956:Models, Chemical; D008968:Molecular Conformation; D009281:Naphthalenes / Q000737:chemistry* / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry*; D011522:Protons; D012015:Reference Standards; D012016:Reference Values
chemical_list: D002247:Carbon Isotopes; D009281:Naphthalenes; D011522:Protons; D015107:4-Butyrolactone