Glycoside | Carbohydrate, Sugar & Structure | Britannica
Glycoside, any of a wide variety of naturally occurring substances in which a carbohydrate portion, consisting of one or more sugars or a uronic acid (i.e., a sugar acid), is combined with a hydroxy compound.
Glycosides - Chemistry LibreTexts
2023年1月23日 · Acetal derivatives formed when a monosaccharide reacts with an alcohol in the presence of an acid catalyst are called glycosides. This reaction is illustrated for glucose and methanol in the diagram below.
Glycoside - an overview | ScienceDirect Topics
Glycosides are compounds in which a sugar molecule (glycone) is attached, through a glycosidic linkage, to the anomeric carbon of a non-sugar moiety (aglycone). Glycosides can be of several classes such as iridoid, alcoholic, anthraquinone, flavonoid, coumarin, chromone, cardiac, steviol, cyanogenic, phenolic, saponins, iridoid, thio, among others.
Carbohydrate Chemistry: simple sugars, rings and glycosides
Carbohydrates are of great importance in energy metabolism, and are essential components of nucleic acids (RNA and DNA). They are also found attached to many proteins (“glycoproteins”). Sugars are also called saccharides. Simple sugars, with only one sugar unit, are called monosaccharides.
2.9: Disaccharides and Glycosidic Bonds - Chemistry LibreTexts
2021年5月11日 · identify the type of glycoside link (e.g., 1,4′‑β) present in a given disaccharide structure. draw the structure of a specific disaccharide, given the structure of the monosaccharide units and the type of glycoside link involved.
Glycoside - (Organic Chemistry) - Vocab, Definition ... - Fiveable
Glycosides are compounds in which a sugar molecule, or monosaccharide, is covalently bonded to a non-sugar molecule, typically through an oxygen atom. This glycosidic bond can have either an $\alpha$ or $\beta$ configuration, depending on the orientation of the sugar unit.
15.13: Formation of Glycosides - Chemistry LibreTexts
2020年10月20日 · Acetal derivatives formed when a monosaccharide reacts with an alcohol in the presence of an acid catalyst are called glycosides. This reaction is illustrated for glucose and methanol in the diagram below.
Chemistry and Biological Activities of Flavonoids: An Overview
Flavonoids occur as aglycones, glycosides, and methylated derivatives. The basic flavonoid structure is aglycone ( Figure 1 ). Six-member ring condensed with the benzene ring is either a α -pyrone (flavonols and flavanones) or its dihydroderivative (flavonols and flavanones).
Glycoside - an overview | ScienceDirect Topics
Glycosides are formed in nature by the interaction of the nucleotide glycosides—for example, uridine diphosphate glucose (UDP-glucose)—with the alcoholic or phenolic group of a second compound. Such glycosides, sometimes called O-glycosides, are the …
Glycoside - an overview | ScienceDirect Topics
Based on the aglycone structure, the main categories of glycosides are sterol, terpene, phenol, or phenylpropanoid glycosides. The aglycone portion influences the therapeutic direction, whereas the saccharide portion (sugar chain/s) has a role in increasing the biomolecules’ solubility, pharmacokinetics, and pharmacodynamics properties.
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