Glycosides


CH,(OH) CH(OH) CH,(OH) -> 2CH 0 + HCOOH This selective oxidation has proved of great value in the investigation of sugar structures. For this purpose, a glycoside is frequently employed to protect CH,0 H CH,0 H CH,0 H CH,0 H  [c.145]

Emulsin, an enzyme readily obtained from almonds, has the property of hydrolysing 3-glycosides.  [c.515]

D-Arabinose is found in the glycoside bar-baloin and in the polysaccharides of the tubercle bacillus.  [c.40]

D-galactose, C HiiOe. Crystallizes in the pyranose form m.p. 1I8-120 C (monohydrate), 165-5" C (anhydrous). An isomer of glucose which is fairly widely distributed in plants. It is a constituent of raffinose and slachyose, of hemicelluloses, of pectin, of gums and mucilages, and of some glycosides. In animals it forms half the lactose molecule and is the sugar found in the brain. Chemically it is very similar to glucose. It has the structure  [c.185]

D-glucose, dextrose, C Hi20 . The most common hexose sugar. It is present in many plants, and is the sugar of the blood. It is a constituent of starch, cellulose, glycogen, sucrose and many glycosides, from all of which it can be obtained by hydrolysis with acids or enzymes.  [c.190]

Linamarin, acetonecyanhydrin, -D>gluco-pyranoside, CeH, 0j 0 C CH3)2 CN. M.p. I43-I45°C. Present in young flax plants and in Phaseolus lunatus and is also the glycoside of rubber seeds. Such glycosides may be regarded as primary materials for synthesis.  [c.240]

It occurs in many natural glycosides. It can be prepared by fusing resorcinol with NaOH and is manufactured from trinitrotoluene via trinitrobenzoic acid and triaminobenzene.  [c.306]

Starch consists of amylose, v hich is water-soluble and retrogrades on concentration forming an insoluble precipitate, and amy-lopectin, a mucilaginous substance with the characteristic paste-forming properties. Amylose is composed of long straight chains containing 200-1000 glucose units linked by a-1,4-glycoside links amylopeclm consists of comparatively short chains (about 20 glucose units) cross-linked by a-1,6-glycoside links. Both amylose and amylopectin have been synthesized from glucose-1-phosphate by the action of the enzyme phosphorylase.  [c.371]

C. The pentose sugar of straw, cotton-seed hulls and various hemicelluloses, and of some glycosides, including the primeverosides. It is not fermentable and behaves chemically as other sugars.  [c.430]

The question of the flexibility (or rigidity) of the glycosidic linkage connecting the different sugar units in oligosaccharides is a hot issue in carbohydrate chemistry. The findings of Maler et al [46] could be interpreted as indicating a certain flexibility of the glycosidic linkages in melezitose. The question was posed more directly by Poppe and van Flalbeek [47], who measured the intra- and interresidue proton-proton NOEs and rotating frame NOEs in sucrose in aqueous solution. They mterpreted the results as proving the non-rigidity of  [c.1514]

An account has been given on p. 144 of the oc- and 3-methylglucosides, formed by replacing the hydrogen atoms of the terminal OH groups of a- and 3-glucose respectively by methyl groups. These hydrogen atoms can be replaced by various other radicals, and the compounds so formed belong to the general class of glycosides, A number of glycosides occur naturally and these are usually p-glycosides. For example, salicin (1) is a combination of salicyl alcohol (or saligenin) and glucose. Amygdalin (II) is a combination of two molecules of glucose, one molecule of hydrogen cyanide and one molecule  [c.515]


See pages that mention the term Glycosides : [c.17]    [c.23]    [c.32]    [c.36]    [c.36]    [c.37]    [c.40]    [c.40]    [c.88]    [c.109]    [c.114]    [c.114]    [c.121]    [c.138]    [c.138]    [c.138]    [c.138]    [c.138]    [c.176]    [c.177]    [c.177]    [c.188]    [c.189]    [c.189]    [c.191]    [c.193]    [c.193]    [c.267]    [c.284]    [c.284]    [c.298]    [c.327]    [c.337]    [c.345]    [c.352]    [c.361]    [c.372]    [c.400]    [c.1515]   
Carey organic chemistry (0) -- [ c.1043 , c.1044 , c.1045 , c.1062 ]

Structure Elucidation by NMR in Organic Chemistry (2002) -- [ c.134 , c.138 , c.224 , c.225 ]

Thin-layer chromatography Reagents and detection methods (1990) -- [ c.62 , c.179 , c.181 , c.195 , c.197 , c.203 , c.325 , c.326 ]

Organic chemistry (0) -- [ c.1043 , c.1044 , c.1045 , c.1062 ]