Phenylamino saccharide derivatives, their production and pharmaceutical compositions containing them
申请人:KUREHA KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0038195A1
公开(公告)日:1981-10-21
Saccharide derivatives are represented by the general formula [I]
wherein R1 represents a residual group formed by removing the hemiacetal hydroxyl group from a monosaccharide, disaccharide or trisaccharide, R2 represents
-CONH2 or -CH2COOR3 and R3 represents a hydrogen atom, an alkyl of one to four carbon atoms or an equivalent of pharmaceutically acceptable metal. These derivatives can be used either alone or in the form of compositions with a pharmaceutically acceptable carrier or diluent to reduce blood sugar levels and blood pressure.
In a thermal recording sheet having a thermal recording layer containing a colorless or pale colored dye precursor and a color developer reactable with the dye precursor upon heating to develop a color, a dimerized or trimerized urea compound is used as the color developer to obtain a thermal recording sheet which is superior in ground color stability and a thermal recording sheet having a reversible recordability.