The structures of two novel trisaccharides viz. royleose and deniose isolated from Marsdenia roylei were elucidated with the help of modern physico-chemical techniques and chemical transformations. They were defined as O-beta-D-oleandropyranosyl-(1-->4)-O-beta- D-cymaropyranosyl-(1-->4)-beta-D-oleandropyranose and O-beta-D-oleandropyranosyl-(1-->4)-O-beta-D-digitoxopyranosyl++ +-(1-->4)- beta-D-oleandropyranose
作者:Deveshwari P. Khare、Anakshi Khare、Maheshwari P. Khare
DOI:10.1016/s0008-6215(00)83841-0
日期:1980.3
Abstract A new, nonreducing disaccharide, tigmobiose, has been isolated from the dried twigs of Sarcostemmabrevistigma . On the basis of chemical and spectroscopic evidence, and identification of its sole hydrolysis product, its structure has been established as 2,6-dideoxy-β- d - ribo -hexopyranosyl 2,6-dideoxy-β- d - ribo -hexopyranoside (β- d - digitoxopyranosyl β- d -digitoxopyranoside).