Mannopyranuronic acid

The c.d. spectra of glycuronic acids have been measured in a number of laboratories. " These sugar derivatives, named after the corresponding aldohexose, have the exocyclic hydroxymethyl group on C-5 replaced by the carboxyl chromophore. The structure of /3-D-mannopyranuronic acid is given as an example in formula 9, and the structures of the parent compounds in Fig. 1. 

Alginate is a copolymer of a-L-gulopyranuronic and /3-d-mannopyranuronic acid, the sugars being linked (1 4) (see formula 10). 

Synonyms 1-0-(Dihydroxymethylsilyl)-p-D-mannopyranuronic acid Siloxanes and silicones, a-D-mannopyranuronoyl-oxy methyl, hydroxy-term i nated... 

N-Ac 2-Acetamido-2-deoxy-4-0-a-D-glu-copyranosvl-D-mannopyranuronic acid C14H23NO12 397.335 Repeat unit of the teichuronic acid from Micrococcus luteus. [ ] -i-78 (c, 1.3 in H2O). Isol. as anomeric mixt., a p ratio 1.8 1. 

Acetamido-2-deoxy-D-galacturonamide, A-212 2-Acetamido-2-deoxy-D-galacturonic acid, A-212 2-Acetamido-2-deoxy-L-galacturonic acid, A-212 2-Acetamido-2-deoxy-4-0-a-D-glucopyranosyl-D-mannopyranuronic acid,... 

---