Nor-cucurbitacin glucosides from Caputo nigri.
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.
Nakano
K
K
Faculty of Pharmaceutical Sciences, Tokushima University, Japan.
Kanai
Y
Y
Murakami
K
K
Takaishi
Y
Y
Tomimatsu
T
T
D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D010946:Plants, Medicinal / Q000737:chemistry*; D013055:Spectrophotometry, Infrared
D005960:Glucosides