Novel carboximidamide derivatives represented by the following formula (A) and acid adduct salts thereof are disclosed: ##STR1## wherein all the substituents have the same meanings as defined above. N-cyano-pyridinecarboximidate compounds represented by the following formula (II) which are the intermediates for preparing of N-cyano-N'-substituted-pyridinecarboximidamide derivatives wherein the substituent B in the above described formula (A) is pyridine is also disclosed: ##STR2## wherein all the substitutents have the same meanings as defined above. The process for preparing the compounds, the pharmaceutical agents comprising the compound having vasodilating effect, and the therapeutic method of dosing the compound on patients for therapy are also disclosed.
                            本发明公开了以下式(A)所表示的新型
羧酸酰胺衍
生物及其酸加合物盐:##STR1## 其中所有取代基的含义与上述定义相同。本发明还公开了以下式(II)所表示的N-
氰基吡啶羧酰胺中间体,用于制备N-
氰基-N'-取代
吡啶羧酰胺衍
生物,其中上述式(A)中取代基B为
吡啶:##STR2## 其中所有取代基的含义与上述定义相同。本发明还公开了制备这些化合物的方法,包括具有扩血管作用的化合物的药物制剂以及在患者治疗中给予化合物的治疗方法。