title: Flavonoid 5-glucosides from the cocoon shell of the silkworm, Bombyx mori.
abstract: The flavonoid 5-glucosides, quercetin 5,4'-di-O-beta-D-glucopyranoside and quercetin 5,7,4'-tri-O-beta-D-glucopyranoside, together with the known quercetin 5-O-beta-D-glucopyranoside, were isolated from the cocoon shell of the silkworm, Bombyx mori. The structures were identified by spectroscopic analysis. These flavonoid glucosides were not present in mulberry leaves, the silkworm's only food, and they are considered to be metabolites produced by the silkworm.
authors.affiliation: Insect Genetics and Evolution Department, National Institute of Agrobiological Sciences, 1-2 Owashi, Tsukuba, Ibaraki 305-8634, Japan. yasumori@affrc.go.jp
authors.forename: Yasumori
authors.initials: Y
authors.lastname: Tamura
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Nakajima
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Nagayasu
authors.forename: Chiyuki
authors.initials: C
authors.lastname: Takabayashi
mesh_terms: D000818:Animals; D012831:Bombyx / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005419:Flavonoids; D005960:Glucosides