title: Hosenkosides F, G, H, I, J, and K, novel baccharane glycosides from the seeds of Impatiens balsamina.
abstract: From the seeds of Impatiens balsamina we have isolated six novel baccharane glycosides, hosenkosides F-K. The structures of all isolates were determined by the use of two dimensional (2D) NMR techniques (1H-1H correlation spectroscopy (COSY), heteronuclear multiple quantum coherence (HMQC), heteronuclear multiple-bond correlation (HMBC), rotating frame Overhauser enhancement spectroscopy (ROESY), total correlation spectroscopy (TOCSY)) and chemical derivatization. Hosenkosides F, H and I are hosenkol B 3-O-sambubiosido-26-O-glucoside, 3-O-sambubioside and 3,26-O-diglucoside, respectively. Hosenkoside G is hosenkol C 3-O-sambubiosido-28-O-glucoside. Hosenkosides J and K are hosenkol A 3-O-sophoroside and 3-O-sophorosido-26-O-glucosyl-28-O-glucoside, respectively.
authors.affiliation: Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Shoji
authors.forename: A
authors.initials: A
authors.lastname: Umeyama
authors.forename: N
authors.initials: N
authors.lastname: Saitou
authors.forename: K
authors.initials: K
authors.lastname: Yoshikawa
authors.forename: M
authors.initials: M
authors.lastname: Nagai
authors.forename: S
authors.initials: S
authors.lastname: Arihara
mesh_terms: D002240:Carbohydrate Sequence; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D010944:Plants / Q000737:chemistry*; D012503:Saponins / Q000302:isolation & purification* / Q000494:pharmacology; D013141:Spiro Compounds / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D006027:Glycosides; D012503:Saponins; D013141:Spiro Compounds