Compounds of the general formula 1, stereoisomers, pharmaceutically acceptable salts, and/or hydrates, solvates or crystalline forms thereof
wherein
R1 represents C1-C4 alkyl;
R2 and R3 represents fluoro, or
R2 represents fluoro, and R3 represents methyl;
R4 and R5 represents hydrogen, or
R4 represents C1-C6 acyl, and R5 represents hydrogen, or
R4 represents hydrogen, and R5 represents C1-C6 acyl, or
R4 represents optionally substituted α-aminoacyl, and R5 represents hydrogen, or
R4 represents hydrogen, and R5 represents optionally substituted α-aminoacyl;
R6 represents hydrogen, methyl, methoxy or halogen.
通式 1 的化合物、立体异构体、药学上可接受的盐和/或其
水合物、溶液或结晶形式
其中
R1 代表 C1-C4 烷基;
R2 和 R3 代表
氟,或
R2 代表
氟,R3 代表甲基;
R4 和 R5 代表氢,或
R4 代表 C1-C6 脂肪酰,R5 代表氢,或
R4 代表氢,R5 代表 C1-C6 脂肪酰,或
R4 代表任选取代的 α-
氨基酰基,R5 代表氢,或
R4 代表氢,R5 代表任选取代的 α-
氨基酰基;
R6 代表氢、甲基、甲氧基或卤素。