D-galacturonic add

N-acetylneuraminic acid (sialic acid, 5), is a characteristic component of glycoproteins. Other acidic monosaccharides such as D-glu-curonic add, D-galacturonic add, and liduronic add, are typical constituents of the glycosa-minoglycans found in connective tissue. 

Hepta-O-acetyl-a-D-lactosyl bromide, H-7 l,2,2",3,3",4",6-H ta-0-acetyl-p-maltose, M-15 l,2,2",3",4",6,6"-H ta-0-acetyl-p-maltose, M-15 l,2, 3,3",4",6,6"-H ta-0-acetyl-p-maltose, M-15 2,2, 3,3",4",6,6"-H ta-0-acetyl-p-maltose, M-15 Hepta- O -acetyl-a-primeveropyranose, X-47 Hepta-O-acetyl-p-primeveroside, X-47 Hepta-O-acetyl-p-rutinose, R-44 2,2, 3,3, 4, 6,6 -Hepta-0-acetyl-l-thio-p-E>-ceIIobiose, T-60 Hepta-O-acetyl-P-turanopyranose, T-201 Hexa-O-acety 1-1,6-anhydro-6-bromomaltose, M-15 Hexa-O-acetyl-a-robinobiosyl bromide, R-28 a-L-/Ar o-4-Hex-4-enopyranuronosyl-D-galacturonic add, H-80 Hyalbiuronic acid N-Ac, H-127... 

Takeuchi and Yamamoto have developed a D-glucuronic acid selective fluorescent system (33) based on a boronic add and metal chelate [90, 91). The behavior of the system has been analyzed widi and without Zn(II). Fluorescence measurements indicate that binding with common monosaccharides (D-fructose, D-glucose and d-galactose) are not affected by incorporation of a Zn(II), whereas binding with uronic (D-glucuronic and D-galacturonic) adds and sialic (N-acetylneuraminic) acid are... 

Add Derivatives.—N - (2 - Chloroethyl) - d - gluconamide, a - d - glucuronate,-CaBrj, caldum sodium D-galacturonate and strontium sodium D-galacturo-nate, and L- r /o-hexulosonic add. ... 

Kohn, R., Hirsch, 1986. Binding of calcium, lead, and copper(II) cations to galactaric and 2,5-furandicarboxylic adds and to D-galacturonic acid and its derivatives. Journal of Collection of Czechoslovak Chemical Communications 51,1150-1159. 

Improved preparations have been reported for the galacturonic acid derivative 52, for use in making specific uronic add-containing disaccharides (Chapter 3), and for the diethyl dithioacetal of D-glucurono-6,3-lactone. The mono-6>-methylated cyclitol L-quebrachitol could be converted in three steps to the enol ether 53, ozonolysis of which gave the acylic L-guluronic add derivative 54.65... 

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