D-Glucaro-l,4-lactone

D-Glucaro-l, 4-lactone phenolphthalein /3-D-gluco-siduronic acid 4.5 200 88... 

The actions of 3-0-methyl-D-glucuronate and 3-0-methyl-D-glucaro-l, 4-lactone as inhibitors are of interest in this connection (see Table VIII). 

D-Glucuronic acid D-Glucurono-y-lactone D-Galacturonic acid D-Mannuronic acid D-Mannurono-y-lactone D-Glucaric acid D-Glucaro-l,4-lactone D-Glucaro-6,3-lactone... 

Carboxylic Acid Derivatives.—Calcium D-glucarate, D-glucaro-l,4-lactone, calcium sodium -D-galacturonate, methyl (l,2,3,4-tetra-0-acetyl-j8-i>galacto-pyranosyl)uronate, calcium D-araW o-hexulopyranosonate, the 2-C-benzyl derivative (326) from L-ascorbic acid (prepared by treating L-ascorbic acid with benzyl chloride and then with methanol), and 2-(4-bromophenylhydrazono)-dehydro-L-ascorbic acid. ... 

In procedure B, a similar method was followed. D-Glucaro-1,4 6,3-dilactone (20) was reduced to L-gulono-1,4-lactone (21) which, when treated with ammonia in methanol, afforded L-gulonamide (22). Oxidation of 22 with sodium hypochlorite gave L-xylose (23), which formed osazone 19 with phenylhydrazine. Hydrolysis of 19 afforded 9. 

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