申请人:Meiji Seika Kaisha, Ltd.
公开号:US06660718B1
公开(公告)日:2003-12-09
A compound represented by the following general formula (I) or a salt thereof:
wherein R&agr; represents a C1-C10 alkyl group, a C3-C10 alkenyl group, a C7-C15 aralkyl group, a quinolinylalkyl group, a quinolinylalkenyl group, a C2-C10 alkylcarbonyl group, a C7-C15 aralkylcarbonyl group, a C4-C7 cycloalkylcarbonyl group, benzoyl group, an imidazolylcarbonyl group and the like; R1 represents hydrogen atom, a C1-C10 alkyl group, or a C2-C10 alkylcarbonyl group; and R2 represents hydrogen atom, a C1-C10 alkyl group, or a C2-C10 alkylcarbonyl group, provided that the compound wherein R&agr; represents a C2-C10 alkylcarbonyl group and both of R1 and R2 represent a C1-C10 alkyl group is excluded.
由以下一般式(I)或其盐所代表的化合物:其中R&agr;代表C1-C10烷基基团、C3-C10烯基基团、C7-C15芳基烷基基团、喹啉基烷基基团、喹啉基烯基基团、C2-C10烷基羰基基团、C7-C15芳基羰基基团、C4-C7环烷基羰基基团、苯甲酰基、咪唑基羰基基团等;R1代表氢原子、C1-C10烷基基团或C2-C10烷基羰基基团;R2代表氢原子、C1-C10烷基基团或C2-C10烷基羰基基团,但其中R&agr;代表C2-C10烷基羰基基团且R1和R2均代表C1-C10烷基基团的化合物被排除。