| 摘要 |
<p>The present invention relates to a chloral derivative having the general formula in which Y' is a polysaccharide consisting of a chain of anhydroglucose, modified anhydroglucose or uronic acid units as substituent group and in which R is selected from -H, -COCH2OH, - ¢(CH2)nO! -H in which n is 2 to 5 and X is 1 to 7; -CH2OSO2X' or -CH2COOX' in which X' is NH4 or a single equivalent of a non-toxic metallic cation, -(CH2)n H where n is 1 to 7, -(CH2)n (OH)XY where Y is -H or -CH3 n is 1 to 7, X is 1 to 12 and the -OH groups are attached to any or all of the carbon atoms by substitution and wherein when Y7 is a chain of unmodified anhydroglucose units, these units have the following configurations: ? -D-glucopyranosyl units having a predominantly 1 - 4 linkage .beta. -D-glucopyranosyl units having a predominantly 1 - 4 linkage and/or .beta. -D-glucopyranosyl units having a predominantly 1 - 4 linkage when O6 is a carboxylic acid group.</p> |
