title: Biphenyl glycosides from the fruit of Pyracantha fortuneana.
abstract: Five new biphenyl glycosides, fortuneanosides A (1), B (2), C (3), D (4), and E (5), were isolated from the fruit of Pyracantha fortuneana. Their structures were established as 3,3'-dihydroxy-5'-methoxy-(1,1'-biphenyl)-4-O-beta-d-glucoside, 4'-hydroxy-2,3',5'-trimethoxy-(1,1'-biphenyl)-2'-O-beta-d-glucoside, 4'-hydroxy-3',5'-dimethoxy-(1,1'-biphenyl)-2-O-beta-d-glucoside, 2,4'-dihydroxy-3',5'-dimethoxy-(1,1'-biphenyl)-3-O-beta-d-glucoside, and 3,4'-dihydroxy-3',5'-dimethoxy-(1,1'-biphenyl)-4-O-beta-d-glucoside by spectroscopic analysis. All compounds were evaluated for inhibitory activity against tyrosinase. Compared with arbutin (IC(50) = 0.23 mM), fortuneanoside D possessed more potency, with an IC(50) value of 0.07 mM.
authors.affiliation: Department of Natural Products Chemistry, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Dai
authors.forename: Guang-xiong
authors.initials: GX
authors.lastname: Zhou
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kurihara
authors.forename: Wen-cai
authors.initials: WC
authors.lastname: Ye
authors.forename: Xin-sheng
authors.initials: XS
authors.lastname: Yao
mesh_terms: D001713:Biphenyl Compounds / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D005638:Fruit / Q000737:chemistry; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D020128:Inhibitory Concentration 50; D015394:Molecular Structure; D014442:Monophenol Monooxygenase / Q000037:antagonists & inhibitors*; D010946:Plants, Medicinal / Q000737:chemistry*; D031991:Pyracantha / Q000737:chemistry*
chemical_list: D001713:Biphenyl Compounds; D004365:Drugs, Chinese Herbal; D006027:Glycosides; D014442:Monophenol Monooxygenase