A new steroidal saponin from Allium ampeloprasum var. porrum with antiinflammatory and gastroprotective effects
作者:Camila Rodrigues Adão、Bernadete Pereira da Silva、José Paz Parente
DOI:10.1016/j.phytol.2011.05.009
日期:2011.9
A newsteroidalsaponin was isolated from the bulbs of Alliumampeloprasumvar. porrum. On the basis of chemical conversions and detailed analyses of 1H and 13C NMR spectra including 2D NMR spectroscopic techniques, its structure was established as 3-[(O-β-d-glucopyranosyl-(1 → 3)-β-d-glucopyranosyl-(1 → 2)-O-[O-β-d-glucopyranosyl-(1 → 3)]-O-β-d-glucopyranosyl-(1 → 4)-β-d-galactopyranosyl)oxy]-2,6-dihydroxy-(2α
从葱属鳞茎的鳞茎中分离出一种新的甾体皂苷。稀饭。关于化学转化和的详细分析的基础上1 H和13 C NMR谱包括二维NMR光谱技术,其结构被确定为3 - [(ø - β - d -glucopyranosyl-(1→3) - β - d -吡喃葡萄糖基-(1→2)-O- [ O - β - d-吡喃葡萄糖基- (1→3)]- O - β - d-吡喃葡萄糖基- (1→4)-β - d-galactopyranosyl)氧基] -2,6-二羟基- (2 α,3 β,5 α,6 β,25 - [R)-spirostane。本研究的结果表明,甾体皂苷在体外试验中显示出溶血作用,并在体内模型中表现出抗炎活性和胃保护作用。
Recherches sur l'amidon XXXIII. Analyse chromatographique de mélanges synthétiques de triméthylglucoses isomères
作者:R. A. Boissonnas
DOI:10.1002/hlca.19470300634
日期:1947.10.15
1° La synthèse du 2,3,4,6-tétraméthyl-glucitol, du 2,3,4-triméthyl-glucitol, du 2,3,6-triméthyl-glucitol, du 2,4,6-triméthyl-glucitol, du 3,4,6-triméthyl-glucitol, et du 2,3-diméthyl-glucitol a été effectuée.
1°Lasynthèsedu 2,3,4,6-叔戊基葡萄糖醇,du 2,3,4-三巯基葡萄糖醇,du 2,3,6-三巯基葡萄糖醇,du 2,4,6-三巯基葡萄糖醇, du,3,4,6-trimththyl-glucolucet et du 2,3-dimethyl-glucoluc aetéeffectuée。
The capsular polysaccharide of klebsiella serotype K60; a novel, structural pattern
作者:Guy G.S. Dutton、Jose Di Fabio
DOI:10.1016/s0008-6215(00)85197-6
日期:1980.12
Non-linear capsularpolysaccharides of Klebsiella bacteria usually have a single side-chain per repeating unit, or, less commonly, two side-chains attached to the same unit. The capsularpolysaccharide from Klebsiellaserotype K60 is unique in having three side-chains in the heptasaccharide repeating-unit shown. The structure, including the configuration of the glycosidic linkages, was established