An alkyl-phenylcarbamate derivative of a polysaccharide has in 80 to 100 percent of hydrogen atoms of the amino and hydroxyl groups an alkylphenyl-carbamoyl group having the formula (I):
in which (1) at least one of R1 to R5 is a straight alkyl having 4 to 8 or a branched alkyl having 3 to 8 carbon atoms or at least two of R1 to R5 each are a straight alkyl having 1 to 3 when the polysaccharide is cellulose; (2) at least one of R1 to R5 is a straight alkyl having 1 to 8 carbon atoms or a branched alkyl having 3 to 8 carbon atoms when the polysaccharide is any one other than cellulose; and the other(s) of R1 to R5 is hydrogen. It is useful to optical separation of a racemic mixture.
一种
多糖的烷基
苯基氨基甲酸酯衍
生物在
氨基和羟基的80%至100%的氢原子中含有具有式(I)的烷基
苯基氨基甲酸酯基团:
其中(1)当
多糖是
纤维素时,R1 至 R5 中至少有一个是具有 4 至 8 个碳原子的直链烷基或具有 3 至 8 个碳原子的支链烷基,或 R1 至 R5 中至少有两个各自是具有 1 至 3 个碳原子的直链烷基;(2)当
多糖是
纤维素以外的任何一种
多糖时,R1 至 R5 中至少有一个是具有 1 至 8 个碳原子的直链烷基或具有 3 至 8 个碳原子的支链烷基;以及 R1 至 R5 中的另一个或多个是氢。它有助于外消旋混合物的光学分离。