| 摘要 |
An aromatic substituted glycoside is disclosed of the formula <CHEM> wherein the configuration of the substituted -OR on the anomeric carbon is alpha, n is an integer of 0 or 1, and R is a substituted aromatic radical selected from the group <CHEM> where R1 through R6 are independently halogen, NO2, SO3H, @OR7, - @-OH, -@-H, O @R7, where R7 is lower alkyl; and includes its stereoisomers, optical isomers and geometric isomers and mixtures of the foregoing isomers. These substrates are useful as direct substrates for alpha-amylases. A process for the preparation of the substrates and related substances is also described. |
