Compounds of formula (I):
in which:
R1 represents a hydrogen atom, an alkyl group, a substituted alkyl group, a C2-C6 alkenyl group, an aryl group, a substituted aryl group or a (C1-C6 alkoxycarbonyl group; R2 represents a hydrogen atom, a C1-C6 alkyl group or a C3 or C4 alkenyl group; R3 represents a hydrogen atom or a C1-C6 alkyl group; R4 represents a hydroxy group, a C1-C21 aliphatic acyloxy group or an aromatic acyloxy group; R5 represents a C1-C12 alkyl group, a C1-C6 alkoxy group, a hydroxy group, a C1-C7 aliphatic acyloxy group or an aromatic acyloxy group; R6 represents a hydrogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group; and n is 0, 1, or 2;
and pharmaceutically acceptable salts thereof are valuable in the treatment of circulatory disorders and allergies.
式(I)化合物:
其中
R1 代表
氢原子、烷基、取代的烷基、C2-C6
烯基、芳基、取代的芳基或 C1-C6 烷
氧基羰基; R2 代表
氢原子、C1-C6 烷基或 C3 或 C4
烯基; R3 代表
氢原子或 C1-C6 烷基;R4 代表羟基、C1-C21
脂肪族酰
氧基或芳香族酰
氧基; R5 代表 C1-C12 烷基、C1-C6 烷
氧基、羟基、C1-C7
脂肪族酰
氧基或芳香族酰
氧基; R6 代表
氢原子、C1-C6 烷基或 C1-C6 烷
氧基;以及 n 是 0、1 或 2;
及其药学上可接受的盐类在治疗循环系统疾病和过敏症方面具有重要价值。