71049-59-7Relevant academic research and scientific papers
Furostane-type steroidal saponin from digitalis ciliata
Gvazava,Kikoladze
experimental part, p. 246 - 249 (2010/09/15)
A new furostane-type steroidal glycoside and derivative of tigogenin (1) was isolated from aqueous wastes from production of the cardiac drug acetyldigitoxin from leaves of Digitalis ciliata Trautv. (Scrophulariaceae) and characterized. The structure of the glycoside was established using physical constants, chemical transformations, and spectral data as 3-O-β-D- glucopyranosyl-(1→3) [β-D-fucopyranosyl-(1→2)-β- Dglucopyranosyl-(1→4)-β-D-galactopyranosyl-(25R)-5α-furostan- 3β,22α,26-triol-26-O-β-Dglucopyranoside.
A Flavonol-diglycoside from Melastoma melabathricum
Dinda, B.,Saha, M. K.
, p. 209 - 211 (2007/10/02)
A new flavonol-diglycoside was isolated from the methanolic extract of the aerial parts of Melastoma melabathricum.Its structure was established as quercetin-3-O-α-L-rhamnosyl-(1->2)-β-D-galactoside on the basis of physical and chemical evidences.
ISOLATION AND STRUCTURES OF ELLAGIC ACID DERIVATIVES FROM EUPHORBIA ACAULIS
Bindra, R. S.,Satti, N. K.,Suri, O. P.
, p. 2313 - 2316 (2007/10/02)
Key Word Index-Euphorbia acaulis; Euphorbiaceae; 3,3'-di-O-methyl ellagic acid 4'-rutinoside; 3,4,3'-tri-O-methyl ellagic acid 4'-rutinoside.Abstract-A new ellagic acid glycoside, 3,3'-di-O-methyl ellagic acid 4'-rutinoside, along with 3,4,3'-tri-O-methyl ellagic acid 4'-rutinoside and 3,4,3'-tri-O-methyl ellagic acid have been isolated from the rhizomes of Euphorbia acaulis.The structures of these compounds have been established on the basis of spectral (1H NMR, 13C NMR, MS, IR, UV) and chemical evidence.
A NEW STEROID GLYCOSIDE, TACCAOSIDE, FROM Tacca cheancer
Ngok, Fam Khoang,Kel'ginbaev, A. N.,Gorovits, M. B.,Abubakirov, N. K.
, p. 262 - 264 (2007/10/02)
A new steroid glycoside of the spirostan series - taccaoside (I) - has been isolated from an ethanolic extract of the roots of Tacca cheancer (family Taccaceae).An acid hydrolysate was found to contain the aglycone diosgenin (II) and the sugars D-glucose and L-rhamnose in a ratio of 1:2.By methyletion and hydrolysis of the permethylete (IV) it has been established that the two terminal L-rhamnose residues are attached at C-2 and C-3 of the D-glucose molecule which, in its turn, substitutes the hydroxy group at C-3 of diosgenin.Glycoside (I) has the structure of (25R)-spirost-5-en-3β-ol 3-O-2)>3)>-β-D-glucopyranoside>.
