FUSED PYRIDAZINE DERIVATIVES, PROCESS FOR THE PREPARATION OF THE SAME AND USES THEREOF
申请人:Takeda Chemical Industries, Ltd.
公开号:EP1123936A1
公开(公告)日:2001-08-16
A compound (I) represented by the formula:
wherein Ar1 and Ar2 are Independently an aromatic group optionally having a substituent, and Ar1 and Ar2 may form a condensed cyclic group with an adjacent carbon atom; ring B is a nitrogen-containing heterocycle optionally having a substituent; X and Y are the same or different and are independently a band, an oxygen atom, S(O)p (p is an integer of 0 to 2), NR4 wherein R4 is a hydrogen atom or a lower alkyl group, or a bivalent linear lower hydrocarbon group which may contain 1 to 3 hetero atoms and the bivalent linear lower hydrocarbon group may be substituted; A is a nitrogen atom or CR7 wherein R7 is a hydrogen atom, a halogen atom, a hydrocarbon optionally having a substituent, an acyl group or a hydroxy group optionally having a substituent; R1, R2 and R3 are the same or different and are independently a hydrogen atom, ahalogen atom, ahydrocarbon group optionally having a substituent, an acyl group or a hydroxy group optionally having a substituent; R8 is a hydrogen atom, a hydroxy group which may be substituted by lower alkyl or a carboxyl group, provided that the nitrogen-containing heterocycle represented by ring B is not a heterocycle represented by the formula:
wherein n is 0 or 1, or a salt thereof, exhibits excellent anti-allergic, anti-histaminic, anti-inflammatory and eosinophil chemotaxis inhibiting activity and is useful as a pharmaceutical composition for preventing or treating allergic skin diseases such as contact dermatitis, pruritus, dried dermatitis, acute urticaria and prurigo.
According to the method for producing of the present invention, the compound (I') represented by the formula:
wherein Ar1' and Ar2' are independently an aromatic group optionally having a substituent, and Ar1' and Ar2' may form a condensed cyclic group with an adjacent carbon atom; ring B' is a nitrogen-containing heterocycle optionally having a substituent; X and Y are the same or different and are independently a bond, an oxygen atom, S(O)p (p is an integer of 0 to 2), NR4 wherein R4 is a hydrogen atom or a lower alkyl group, or a bivalent linear lower hydrocarbon group which may contain 1 to 3 hetero atoms and the bivalent linear lower hydrocarbon group may be substituted; A is a nitrogen atom or CR7 wherein R7 is a hydrogen atom, a halogen atom, a hydrocarbon optionally having a substituent, an acyl group or a hydroxy group optionally having a substituent; R1 is a hydrocarbon group substituted with an optionally esterified carboxyl group, R2 and R3 are the same or different and are independently a hydrogen atom, a halogen atom, a hydrocarbon group optionally having a substituent, an acyl group or a hydroxy group optionally having a substituent; R8 is a hydrogen atom, a hydroxy group which may be substituted by lower alkyl or a carboxyl group, or a salt thereof, exhibiting excellent anti-allergic, anti-histaminic, anti-inflammatory and eosinophil chemotaxis inhibiting activity and is useful as a pharmaceutical composition for preventing or treating adthma, allergic rhinitis, atopic dermatitis, allergic conjunctivitis, chronic urticaria, can be produced in good efficiency and in a high yield.
The hydrate of a compound represented by the formula;
wherein R is a hydrogen atom or an ethyl group, or a succinate or citrate of the compound (I") exhibits excellent anti-allergic, anti-histaminic, anti-inflammatory and eosinophil chemotaxis inhibiting activity and is useful as a pharmaceutical composition for preventing or treating adthma, allergic rhinitis, atopic dermatitis, allergic conjunctivitis, chronic urticaria, and has excellent stability.
一种由式表示的化合物(I):
其中 Ar1 和 Ar2 独立地为可选具有取代基的芳香基团,且 Ar1 和 Ar2 可与相邻碳原子形成缩合环基;环 B 为可选具有取代基的含氮杂环;X和Y相同或不同,且独立地为带、氧原子、S(O)p(p为0至2的整数)、NR4(其中R4为氢原子或低级烷基)或可含有1至3个杂原子的二价线性低级烃基,且该二价线性低级烃基可被取代;A是氮原子或CR7,其中R7是氢原子、卤素原子、可选具有取代基的烃、酰基或可选具有取代基的羟基;R1、R2和R3相同或不同,且独立地是氢原子、卤素原子、可选具有取代基的烃、酰基或可选具有取代基的羟基;R8 是氢原子、可被低级烷基取代的羟基或羧基,条件是环 B 所代表的含氮杂环不是式中所代表的杂环:
其中 n 为 0 或 1 的杂环,或其盐,具有优异的抗过敏、抗组胺、抗炎和抑制嗜酸性粒细胞趋化的活性,可用作预防或治疗过敏性皮肤病如接触性皮炎、瘙痒症、干燥性皮炎、急性荨麻疹和瘙痒症的药物组合物。
根据本发明的生产方法,由式表示的化合物(I'):
其中 Ar1'和 Ar2'独立地是任选具有取代基的芳香基团,Ar1'和 Ar2'可与相邻碳原子形成缩合环基;环 B'是任选具有取代基的含氮杂环;X和Y相同或不同,且独立地为键、氧原子、S(O)p(p为0至2的整数)、NR4(其中R4为氢原子或低级烷基)或二价线性低级烃基,该二价线性低级烃基可含有1至3个杂原子,且该二价线性低级烃基可被取代;A为氮原子或CR7(其中R7为氢原子、卤素原子、可选择具有取代基的烃、酰基或可选择具有取代基的羟基);R1 是被任选酯化羧基取代的烃基,R2 和 R3 相同或不同,且独立地为氢原子、卤素原子、任选具有取代基的烃、酰基或任选具有取代基的羟基;R8 是氢原子、可被低级烷基或羧基取代的羟基或其盐,具有优异的抗过敏、抗组胺、抗炎和抑制嗜酸性粒细胞趋化的活性,可用作预防或治疗哮喘、过敏性鼻炎、特应性皮炎、过敏性结膜炎、慢性荨麻疹的药物组合物,生产效率高,产量大。
由式表示的化合物的水合物;
式中 R 为氢原子或乙基的化合物的水合物,或化合物(I")的琥珀酸盐或柠檬酸盐,具有优异的抗过敏、抗组胺、抗炎和抑制嗜酸性粒细胞趋化的活性,可用作预防或治疗哮喘、过敏性鼻炎、特应性皮炎、过敏性结膜炎、慢性荨麻疹的药物组合物,并具有优异的稳定性。