The case involves novel pyrazinecarboxamide compounds, processes for preparing and pharmaceutical compositions containing the same. The pyrazinecarboxamides have the general formula
wherein
R and R1 are hydrogen
lower alkyl having from 1 to 5 carbon atoms,
cycloalkyl having from 3 to 6 carbon atoms, lower alkenyl having from 2 to 5 carbon atoms;
lower alkynyl having from 2 to 5 carbon atoms, or
aralkyl wherein the alkyl group has 1 to 3 carbons atoms;
X is halo;
n is an integer selected from 2 or 3.
They are eukalemic agents possessing diuretic and natriuretic properties.
本案涉及新型
吡嗪甲酰胺化合物、制备工艺和含有这些化合物的药物组合物。
吡嗪甲酰胺的通式为
式中
R 和 R1 是氢
具有 1 至 5 个碳原子的低级烷基、
具有 3 至 6 个碳原子的环烷基; 具有 2 至 5 个碳原子的低级烯基;
具有 2 至 5 个碳原子的低级炔基,或
芳烷基,其中烷基具有 1 至 3 个碳原子;
X 是卤素;
n 是选自 2 或 3 的整数。
它们是具有利尿和利
钠特性的真核
生物制剂。