The present invention encompasses compounds of Formula I
or pharmaceutically acceptable salts thereof, wherein each R
1
may be substituted at any substitutable position on A and each R
1
is independently selected from the group consisting of: halo, cyano, C
1-4
alkoxy, C
1-4
alkylthio and C
1-4
alkyl, each of said C
1-4
alkoxy, C
1-4
alkylthio and C
1-4
alkyl optionally substituted with 1 to 3 halo groups, R
2
is selected from the group consisting of: C
1-6
alkyl and C
3-6
cycloalkyl, R
3
is selected from the group consisting of: hydrogen, C
1-6
alkyl and C
3-6
cycloalkyl and R4 is a nitric oxide releasing moiety. Pharmaceutical composition comprising said compounds and methods of using said compounds are also encompassed. The compounds of the present invention lower the level of Aβ
42
and are therefore useful for treating or preventing Alzheimer's Disease. The compounds of the invention also release nitric oxide in vivo and have a reduced potency for cyclooxygenase activity. Therefore, the compounds of the present invention do not possess the gastrointestinal side effects associated with nonsteroidal antiinflammatory drugs (NSAIDs).
本发明包括式 I 的化合物
或其药学上可接受的盐,其中每个 R
1
可在 A 上任何可取代的位置被取代,且每个 R
1
独立地选自由卤代、
氰基、C
1-4
烷氧基
1-4
烷
硫基和 C
1-4
烷基,其中每个所述 C
1-4
烷氧基、C
1-4
烷
硫基和 C
1-4
可选择被 1 至 3 个卤代基团取代的烷基,R
2
选自以下组成的组C
1-6
烷基和 C
3-6
环烷基,R
3
选自以下组别:氢、C
1-6
烷基和 C
3-6
环烷基,R4 是释放
一氧化氮的分子。还包括包含所述化合物的药物组合物和使用所述化合物的方法。本发明的化合物可降低 Aβ
42
水平,因此可用于治疗或预防阿尔茨海默病。本发明化合物还能在体内释放
一氧化氮,并降低环氧化酶活性的效力。因此,本发明的化合物不会产生与非类
固醇抗炎药(N
SAIDs)相关的胃肠道副作用。