title: Dihydrostilbene derivatives from Glycyrrhiza glabra leaves.
abstract: Four new dihydrostilbenes, alpha,alpha'-dihydro-3,5-dihydroxy-4'-acetoxy-5'-isopentenylstilbene (1), alpha,alpha'-dihydro-3,3',4'-trihydroxy-5-O-isopentenyl-6-isopentenylstilbene (2), alpha,alpha'-dihydro-3,5,3'-trihydroxy-4'-methoxystilbene (3), and alpha,alpha'-dihydro-3,3'-dihydroxy-5beta-d-O-glucopyranosyloxy-4'-methoxystilbene (4), together with seven known flavonoids, glabranin isomer, naringenin, lupiwighteone, pinocembrin 7-O-glucoside, astragalin, isoquercitrin, vicenin II, and the inositol, pinitol, were isolated from the leaves of Glycyrrhiza glabra grown in Sicily. The structures of 1-4 were elucidated by spectroscopic methods.
authors.affiliation: Istituto del C.N.R. di Chimica Biomolecolare, Sezione di Catania, Via del Santuario 110, I-95028 Valverde CT, Italy.
authors.forename: Daniela M
authors.initials: DM
authors.lastname: Biondi
authors.forename: Concetta
authors.initials: C
authors.lastname: Rocco
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Ruberto
mesh_terms: D047310:Apigenin / Q000737:chemistry / Q000302:isolation & purification*; D044950:Flavanones / Q000737:chemistry / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D006035:Glycyrrhiza / Q000737:chemistry*; D007558:Italy; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013267:Stilbenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D044950:Flavanones; D005960:Glucosides; D013267:Stilbenes; C530449:apigenin-6,8-di-C-glycopyranoside; D047310:Apigenin; C005273:naringenin