Allose is an
aldohexose sugar. It is a rare
monosaccharide that occurs as a 6-O-cinnamyl glycoside in the leaves of the African shrub ''
Protea
''Protea'' () is a genus of South African flowering plants, also called sugarbushes (Afrikaans: ''suikerbos'').
Etymology
The genus ''Protea'' was named in 1735 by Carl Linnaeus, possibly after the Greek god Proteus, who could change his form a ...
rubropilosa''. Extracts from the fresh-water alga ''Ochromas malhamensis'' contain this sugar but of unknown absolute configuration. It is soluble in water and practically insoluble in
methanol.
Allose is a C-3
epimer
In stereochemistry, an epimer is one of a pair of diastereomers. The two epimers have opposite configuration at only one stereogenic center out of at least two. All other stereogenic centers in the molecules are the same in each. Epimerization i ...
of
glucose
Glucose is a simple sugar with the molecular formula . Glucose is overall the most abundant monosaccharide, a subcategory of carbohydrates. Glucose is mainly made by plants and most algae during photosynthesis from water and carbon dioxide, u ...
.
Notes
References
* Carbohydrates, edited by P.M. Collins, Chapman and Hall,
Aldohexoses
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