Monosaccharides aldotetroses

The simplest carbohydrates are the monosaccharides which under specified conditions are structurally characterised as polyhydroxy aldehydes or polyhydroxy ketones these are termed aldoses and ketoses respectively. Aldoses and ketoses are sub-classified, according to the number of carbons present in each molecule, into aldotetroses, aldopentoses, aldohexoses, etc., or ketotetroses, ketopentoses, etc. [Pg.637]

Monosaccharide A in the following scheme is a D-aldotetrose. Compound E does rotate plane-polarized light, whereas compounds B and F do not. Show the structures of A, B, C, D, E, and F. [Pg.1110]

How many stereogenic centers are present in each type of monosaccharide (a) an aldotetrose (b) a ketohexose ... [Pg.1033]

Table 25.1 shows names and Fischer projections for all D-aldotetroses, pentoses, and hexoses. Each name consists of three parts. The letter D specifies the configuration of the penultimate carbon. Prefixes such as rib-, arabin-, and glue- specify the configuration of all other chiral centers in the monosaccharide. The suffix -ose shows that the compound is a carbohydrate. [Pg.1093]

Draw Fischer projections for the four aldotetroses. Which are D-monosaccharides, which are L-monosaccharides, and which are enantiomers Refer to Table 25.1 and write the name of each aldotetrose. [Pg.1094]

Classify the following monosaccharide, erythrose, as an aldotetrose, ketoletrose, aldopentose, or ketopentose ... [Pg.436]

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