title: Nor-cucurbitacin glucosides from Caputo nigri.
abstract: Three new nor-cucurbitacin glucosides were isolated from the root of Caputo nigri (Cabeça-de-negro) and their structures established as 29-nor-1,2,3,4,5,10-dehydro-2,3,16 alpha,20R, 22 zeta,25-hexahydroxy-11-oxocucurbita-6,23-diene 2-O-beta-D-glucopyranoside and 2-O-beta-D-glucopyranosyl(1-2)beta-D- glucopyranoside(sophorose), and 1,2,3,4,5,10-dehydro-2,3,16 alpha-trihydroxy-4, 9,14-trimethyl-19-norpregn-6-ene-11,20-dione 2-O-beta-D-glucopyranoside on the basis of detailed spectroscopic analysis.
authors.affiliation: Faculty of Pharmaceutical Sciences, Tokushima University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nakano
authors.forename: Y
authors.initials: Y
authors.lastname: Kanai
authors.forename: K
authors.initials: K
authors.lastname: Murakami
authors.forename: Y
authors.initials: Y
authors.lastname: Takaishi
authors.forename: T
authors.initials: T
authors.lastname: Tomimatsu
mesh_terms: D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D010946:Plants, Medicinal / Q000737:chemistry*; D013055:Spectrophotometry, Infrared
chemical_list: D005960:Glucosides