&bgr;-amyloid inhibitors, processes for preparing them, and their use in pharmaceutical compositions
申请人:Boehringer Ingelheim Pharma KG
公开号:US06514969B2
公开(公告)日:2003-02-04
Compounds of general formula (I)
wherein:
A is —CH2—, —CH2—CH2—, —CH2—CH2—CH2—, —CH2—CH2—CH2—CH2—, —CH2—CO—, —CH2—CH2—CO—, or —CH═CH—CO—;
Het is piperidinyl, piperazinyl, or dihydrobenzimidazolonyl;
R1 is hydrogen or halogen;
R2 is hydrogen, C1-C4-alkyl, CF3, or a phenyl group optionally substituted by halogen, C1-C4-alkyl, or C1-C4-alkyloxy; and
R3 is hydrogen, C1-C4-alkyl, HO—C1-C4-alkyl, or C2-C4-alkenyl; or a group selected from phenyl, benzyl, and phenylethyl, each optionally substituted by halogen, CF3, C1-C4-alkyl, or C1-C4-alkyloxy; or a heterocycle selected from among morpholine, piperidine, piperazine, and dihydrobenzimidazolone, the heterocycle either linked directly or via a C1-C4-alkylene bridge,
or an optical isomer, enantiomer, tautomer, free base, or pharmacologically acceptable acid addition salt thereof; methods of making such compounds; pharmaceutical compositions thereof, and their use in treating or preventing diseases in which a therapeutic benefit can be obtained by interfering in the process of the formation of A&bgr; or its release from cells, by inhibiting the A&bgr; activity, such as Alzheimer's disease, Parkinson's disease, and Huntington's Chorea.
通式(I)的化合物,其中:A为—CH2—、—CH2—CH2—、—CH2—CH2—CH2—、—CH2—CH2—CH2—CH2—、—CH2—CO—、—CH2—CH2—CO—或—CH═CH—CO—;Het为哌啶基、哌嗪基或二氢苯并咪唑基;R1为氢或卤素;R2为氢、C1-C4烷基、CF3或苯基,可选地被卤素、C1-C4烷基或C1-C4烷氧基取代;R3为氢、C1-C4烷基、HO—C1-C4烷基或C2-C4烯基;或从苯基、苄基和苯乙基中选择一个,可选地被卤素、CF3、C1-C4烷基或C1-C4烷氧基取代;或从吗啉、哌啶、哌嗪和二氢苯并咪唑中选择一个,该杂环通过C1-C4烷基桥或直接连接;或其光学异构体、对映异构体、互变异构体、自由碱基或药理学上可接受的酸加合物;制备这种化合物的方法;它们的药物组成物,并用于治疗或预防通过干扰Aβ的形成过程或其从细胞中释放的过程,通过抑制Aβ活性获得治疗效果的疾病,如阿尔茨海默病、帕金森病和亨廷顿舞蹈病。