Allose
Encyclopedia
Allose is an aldohexose
sugar. It is a rare monosaccharide
that has been isolated from the leaves of the African shrub Protea
rubropilosa. It is soluble in water and practically insoluble in methanol
.
Allose is a C-3 epimer
of glucose
.
Aldohexose
An aldohexose is a hexose with an aldehyde group on one end.The aldohexoses have four chiral centres for a total of 16 possible aldohexose stereoisomers . Of these, only three commonly occur in nature: D-glucose, D-galactose, and D-mannose...
sugar. It is a rare monosaccharide
Monosaccharide
Monosaccharides are the most basic units of biologically important carbohydrates. They are the simplest form of sugar and are usually colorless, water-soluble, crystalline solids. Some monosaccharides have a sweet taste. Examples of monosaccharides include glucose , fructose , galactose, xylose...
that has been isolated from the leaves of the African shrub Protea
Protea
Protea is both the botanical name and the English common name of a genus of flowering plants, sometimes also called sugarbushes.-Etymology:...
rubropilosa. It is soluble in water and practically insoluble in methanol
Methanol
Methanol, also known as methyl alcohol, wood alcohol, wood naphtha or wood spirits, is a chemical with the formula CH3OH . It is the simplest alcohol, and is a light, volatile, colorless, flammable liquid with a distinctive odor very similar to, but slightly sweeter than, ethanol...
.
Allose is a C-3 epimer
Epimer
In chemistry, epimers are diastereomers that differ in configuration of only one stereogenic center. Diastereomers are a class of stereoisomers that are non-superposable, non-mirror images of one another....
of glucose
Glucose
Glucose is a simple sugar and an important carbohydrate in biology. Cells use it as the primary source of energy and a metabolic intermediate...
.