511-36-4Relevant articles and documents
Thermal Degradation of Glycosides, V - Hydrothermolysis of Triterpenoid and Steroid Glycosides
Kim, Youn Chul,Higuchi, Ryuichi,Komori, Tetsuya
, p. 453 - 460 (2007/10/02)
In this paper the hydrothermolysis of triterpenoid and steroid glycosides is described.By mere heating with water or water/1,4-dioxane solution, the triterpenoid and steroid glycosides 1, 4 and 15, 16, 25, 29, respectively, are converted into their aglycones and prosapogenins.Furthermore, hydrothermolysis of the triterpenoid 3,28-O-bisglycosides 5, 6, 8, 9, 12 affords the corresponding 3-O-glycosides and reduced oligosaccharides formed by selective cleavage of the ester glycosidic linkage.It is expected that this hydrothermolysis is useful for the structure determination of some triterpenoid and steroid glycosides and for yielding new oligosaccharides.The hydrothermolyzed products have been isolated by chromatography and their structures elucidated by spectroscopic methods.Key Words: Degradation, thermal / Thermolysis / Glycosides / Carbohydrates / Triterpenoids / Steroids
ALKALOIDS OF Rhinopetalum stenantherum. II. THE STRUCTURE OF STENANTHINE AND STENANTHIDINE
Samikov, K.,Rashkes, Ya. V.,Shakirov, R.,Yunusov, S. Yu.
, p. 273 - 278 (2007/10/02)
From a methanolic extract of the epigeal part of Rhinopetalum stenantherum have been isolated β-chaconine (I) and the new glucoalkaloids stenanthine with mp 262-264 deg C, D 46.5 deg, C45H73NO13 (II), and stenanthidine with mp 269-271 deg C, D -47.5 deg, C39H63NO11 (III).On the basis of the facts that partial hydrolysis of trioside (II) formed the biosides (I) and (III), and that on the hydrolysis of the latter the monoside γ-chaconine was found, it may be assumed that stenanthine has the structure of solanidine 3-O-(--D-glucoside), and stenanthidine that of solanidine 3-O-.