6-Amino substituted N-pyrrolyl-3-pyridazine amines, their preparation, and pharmaceutically antihypertensive compositions containing them
申请人:GRUPPO LEPETIT S.P.A.
公开号:EP0009655A1
公开(公告)日:1980-04-16
New N-pyrrolyl-3-pyridazine-amines having a further aminic substituent in the 6 position of the formula (I),
wherein R, R1, R2 and R3 are hydrogen or lower alkyl, R4 is e.g hydrogen or lower alkyl, R5 and R6 are e.g. lower alkyl or taken together with the adjacent nitrogen atom represent a saturated 5 - 6 membered heterocyclic ring which may contain a further heteroatom, R7 and R8 represent hydrogen or, taken together, a 1,3-butadienylene radical forming a benzo system fused with the pyridazine ring, for example N-2,5-dimethyl-1H-pyrrol-1-yl)- 6-morpholino-3-pyridazineamine or N-(2,5-dimethyl-1H-pyrrol- 1-yl)-4-(4-hydroxypiperidino)-1-phthalazineamine, and their pharmaceutically acceptable salts are made e.g. by contacting a hydrazino derivate of the formula (II), wherein the substituents have the same meaning as above or an acid addition salt thereof with a dicarbonyl compound of the formula (III), wherein the substituents have the same meaning as above, or a functional derivative thereof in the presence of an acid catalyst at a temperature between 15°C and 120°C.
The new compounds can be used as antihypertensive agents.
在式 (I) 的 6 位具有另一个氨基取代基的新型 N-吡咯烷-3-哒嗪胺、
其中 R、R1、R2 和 R3 为氢或低级烷基,R4 如为氢或低级烷基,R5 和 R6 如为R5和R6是低级烷基,或与相邻的氮原子一起代表一个饱和的 5 - 6 个成员的杂环,该杂环可能含有另一个杂原子,R7和R8代表氢,或与 1、例如 N-2,5-二甲基-1H-吡咯-1-基)-6-吗啉基-3-哒嗪胺或 N-(2,5-二甲基-1H-吡咯-1-基)-4-(4-羟基哌啶基)-1-酞嗪胺及其药学上可接受的盐。例如,将式(II)的肼基衍生物(其中取代基的含义同上)或其酸加成盐与式 (III)的二羰基化合物(其中取代基的含义同上)或其官能衍生物在酸催化剂存在下于 15°C 至 120°C 的温度下接触。
新化合物可用作降压药。