sapogenins has been researched along with yamogenin* in 3 studies
3 other study(ies) available for sapogenins and yamogenin
| Article | Year |
|---|---|
Erroneous epimerization at C-22 in sapogenins.
A recent report [1] about the epimerization of steroidal sapogenins at C-22 by treatment with BF3 · OEt2 is incorrect. We proved that the epimerization of sapogenins with BF3 · OEt2 occurs at C-25 as in the case of other acid-catalyzed reactions previously studied. Topics: Boranes; Catalysis; Diosgenin; Sapogenins; Stereoisomerism | 2015 |
Photosensitivity in South Africa. VII. Chemical composition of biliary crystals from a sheep with experimentally induced geeldikkop.
Geeldikkop was induced in a sheep by oral administration of crude saponins from Tribulus terrestris. Centrifugation of the bile from this sheep gave a pale green sediment of crystalloid material which was insoluble in common organic solvents, but soluble in acetic acid. Analysis of the crystalloid material by 1H and 13C NMR, EDXA, TLC, LSIMS, and by acidic hydrolysis followed by TLC and GC-MS, revealed it to be composed principally of a 6:1 mixture of the calcium salts of the beta-D-glucuronides of the steroidal sapogenins epismilagenin and episarsasapogenin. The administered saponin was found to contain glycosides of the steroidal sapogenins diosgenin, yamogenin, epismilagenin, tigogenin, neotigogenin, gitogenin and neogitogenin in the ratio 10:7:1:11:7:35:25. A metabolic pathway for the conversion of diosgenin and yamogenin saponins to the biliary glucuronides is proposed. Topics: Animals; Bile; Biliary Tract Diseases; Crystallization; Diosgenin; Photosensitivity Disorders; Plant Poisoning; Sapogenins; Sheep; Sheep Diseases | 1994 |
The isolation and identification of steroidal sapogenins in Kleingrass.
Kleingrass (Panicum coloratum L) has been reported to cause hepatogenous photosensitization in sheep and goats in West Texas since 1973. The toxin in Kleingrass has been suspected of being a steroidal saponin as Kleingrass produced characteristic birefringent crystals similar to those produced by saponin-containing plants such as Agave lecheguilla and Tribulus terrestris. In this present study, steroidal saponis were isolated from Kleingrass and their sapogenins were identified as diosgenin and yamogenin by means of thin-layer chromatography and infrared spectrophotometric analysis. Topics: Chromatography, Thin Layer; Diosgenin; Edible Grain; Hemolysis; Panicum; Sapogenins; Saponins; Spectrophotometry, Infrared | 1990 |