Antisweet natural products. X. Structures of sitakisosides I-V from Stephanotis lutchuensis Koidz. var. japonica.
From the fresh stem of Stephanotis lutchuensis var. japonica, we have isolated five new oleane glycosides named sitakisosides I-V (1-5). Their structures were determined on the basis of spectroscopic data and chemical evidence. Sitakisoside V showed the strongest antisweet activity among sitakisosides I-V.
Yoshikawa
K
K
Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan.
Taninaka
H
H
Kan
Y
Y
Arihara
S
S
D002240:Carbohydrate Sequence; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D018547:Plant Stems / Q000737:chemistry; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D013395:Sucrose / Q000037:antagonists & inhibitors*
D010936:Plant Extracts; D012503:Saponins; D013395:Sucrose