申请人:——
公开号:US20040034104A1
公开(公告)日:2004-02-19
2,2-Diphenylbutanamide derivatives represented by the following formula (1):
1
[wherein A represents —(CH
2
)
n
— (n is 1 or 2) or a methine (CH) group; when A is —CH
2
—, B represents a methine group or a nitrogen atom, with A and B forming a single bond; when A is —(CH
2
)
2
—, B represents a nitrogen atom, with A and B forming a single bond; when A is a methine group, B represents a quaternary carbon atom, with A and B forming a double bond; each of R
1
and R
2
, which are identical to or different from each other, represents a hydrogen atom, a lower alkyl group, or a cycloalkyl group, or R
1
and R
2
may form a heterocyclic ring together with the adjacent nitrogen atom; and Ar represents an optionally substituted phenyl group, bicyclic aromatic ring, monocyclic heterocyclic ring, bicyclic heterocyclic ring, or fluorene group]; or salts of the derivatives.
The derivatives or salts thereof exhibit excellent &mgr;-opioid agonist activity and analgesic activity against neuropathic pain, and are useful as medicines such as peripheral analgesic drugs and neuropathic pain relieving drugs.
以下式子(1)所表示的2,2-二苯基丁酰胺衍生物:
1[其中,A代表—(CH2)n—(n为1或2)或甲基(CH)基团;当A为—CH2—时,B代表甲基基团或氮原子,A和B形成单键;当A为—(CH2)2—时,B代表氮原子,A和B形成单键;当A为甲基基团时,B代表四价碳原子,A和B形成双键;R1和R2各自表示氢原子、低碳基或环烷基,或者R1和R2与相邻氮原子一起形成杂环;Ar表示可选取代的苯基、双环芳香环、单环杂环环、双环杂环环或芴基;以及其衍生物的盐。]
这些衍生物或其盐表现出优异的μ-阿片受体激动剂活性和对神经病理性疼痛的镇痛活性,可用作外周镇痛药和神经病理性疼痛缓解药等药物。