Tetroses
Tetroses are monosaccharides whose carbon backbone contains four carbon atoms. They all have the empirical formula C 4 H 8 O 4 and differ in the type of carbonyl function. In the case of a keto group, one speaks of ketoses ; in the case of an aldehyde group, one calls it aldoses . The phosphoric acid esters of the tetroses play an important role in the carbohydrate metabolism.
Aldote roses
The aldotetroses have two chiral centers , so there are four different stereoisomers , of which only D -erythrosis and D -threose occur naturally.
Ketote roses
Of the two ketotetroses, only D- erythrulose occurs naturally.
See also
Individual evidence
- ^ Brockhaus ABC Chemie, VEB FA Brockhaus Verlag Leipzig 1965, page 1391.