Beta-amyloid inhibitors, processes for preparing them, and their use in pharmaceutical compositions
申请人:——
公开号:US20020042420A1
公开(公告)日:2002-04-11
Compounds of general formula (I)
1
wherein:
A is —CH
2
—, —CH
2
—CH
2
—, —CH
2
—CH
2
—CH
2
—, —CH
2
—CH
2
—CH
2
—CH
2
—, —CH
2
—CO—, —CH
2
—CH
2
—CO—, or —CH═CH—CO—;
Het is piperidinyl, piperazinyl, or dihydrobenzimidazolonyl;
R
1
is hydrogen or halogen;
R
2
is hydrogen, C
1
-C
4
-alkyl, CF
3
, or a phenyl group optionally substituted by halogen, C
1
-C
4
-alkyl, or C
1
-C
4
-alkyloxy; and
R
3
is hydrogen, C
1
-C
4
-alkyl, HO—C
1
-C
4
-alkyl, or C
2
-C
4
-alkenyl; or a group selected from phenyl, benzyl, and phenylethyl, each optionally substituted by halogen, CF
3
, C
1
-C
4
-alkyl, or C
1
-C
4
-alkyloxy; or a heterocycle selected from among morpholine, piperidine, piperazine, and dihydrobenzimidazolone, the heterocycle either linked directly or via a C
1
-C
4
-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是—CH2—、—CH2—CH2—、—CH2—CH2—CH2—、—CH2—CH2—CH2—CH2—、—CH2—CO—、—CH2—CH2—CO—或—CH═CH—CO—;Het是哌啶基、哌嗪基或二氢苯并咪唑基;R1是氢或卤素;R2是氢、C1-C4烷基、CF3或苯基,该苯基可选地被卤素、C1-C4烷基或C1-C4烷氧基取代;R3是氢、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种,每种可选地被卤素、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种杂环,该杂环可以直接连接或通过C1-C4烷基桥连接;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盐;制备这种化合物的方法;其制备的药物组成物及其在治疗或预防通过干扰A&bgr;的形成过程或其从细胞释放的过程中获得治疗效果的疾病中的使用,例如阿尔茨海默病、帕金森病和亨廷顿舞蹈病。