Talose is an
aldohexose sugar. It is an unnatural
monosaccharide
Monosaccharides (from Greek ''monos'': single, '' sacchar'': sugar), also called simple sugars, are the simplest forms of sugar and the most basic units (monomers) from which all carbohydrates are built.
They are usually colorless, water-solub ...
that is soluble in water and slightly soluble in
methanol
Methanol (also called methyl alcohol and wood spirit, amongst other names) is an organic chemical and the simplest aliphatic alcohol, with the formula C H3 O H (a methyl group linked to a hydroxyl group, often abbreviated as MeOH). It is a ...
. Some etymologists suggest that talose's name derives from the automaton of Greek mythology named
Talos
In Greek mythology, Talos — also spelled Talus (; el, Τάλως, ''Tálōs'') or Talon (; el, Τάλων, ''Tálōn'') — was a giant automaton made of bronze to protect Europa in Crete from pirates and invaders. He circled the island's sh ...
, but the relevance is unclear.
Talose is a C-2
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 is ...
of
galactose
Galactose (, '' galacto-'' + '' -ose'', "milk sugar"), sometimes abbreviated Gal, is a monosaccharide sugar that is about as sweet as glucose, and about 65% as sweet as sucrose. It is an aldohexose and a C-4 epimer of glucose. A galactose molec ...
and a C-4 epimer of
mannose
Mannose is a sugar monomer of the aldohexose series of carbohydrates. It is a C-2 epimer of glucose. Mannose is important in human metabolism, especially in the glycosylation of certain proteins. Several congenital disorders of glycosylation ...
.
References
Aldohexoses
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