Compounds and methods are provided for the treatment of disease conditions in which modification of cholinergic, especially muscarinic m1, m4, or both m1 and m4, receptor activity has a beneficial effect. In the method, an effective amount of a compound is administered to a patient in need of such treatment.
Compounds and methods are provided for the treatment of disease conditions in which modification of cholinergic, especially muscarinic m1, m4, or both m1 and m4, receptor activity has a beneficial effect. In the method, an effective amount of a compound is administered to a patient in need of such treatment.
Stereochemical course of the modified polonovski reaction and mercuric acetate oxidation in the preparation of 2-substituted 1,2,3,4,6,7,12,12b-octahydroindolo[2, 3-a]quinolizines
作者:Mauri Lounasmaa、Esko Karvinen
DOI:10.1016/s0040-4020(01)86565-0
日期:1991.8
H2O2 oxidation of C(4) monosubstituted 1-[2-(3-indolyl)ethyl]-piperidines 7a, 7b and 7c followed by the modified Polonovski reaction yielded exclusively indolo[2,3-a]quinolizidines 4a, 4b and 4c possessing the C(12b)H-C(2)Htrans-relationship. The same piperidines, when subjected to the Fujii modification of the mercuric acetate oxidation followed by NaBH2 reduction (the Fujii procedure), gave nearly
C(4)单取代的1- [2-(3-吲哚基)乙基]-哌啶7a,7b和7c的H 2 O 2氧化,然后经过修饰的Polonovski反应,仅生成吲哚并[2,3-a]喹喔啉4a,4b和具有C(12b)HC(2)Htrans关系的4c。相同的哌啶在进行乙酸汞氧化的藤井修饰后再用NaBH 2进行修饰还原(Fujii方法),几乎只得到了具有C(12b)HC(2)H顺式关系的吲哚[2,Ja]喹唑烷3a,3b和3c。4-甲基-1- [2-(3-吲哚基)乙基]-哌啶7a的“经典”乙酸汞氧化,主要产生具有C(12b)HC(2)的吲哚[2,3-a]喹唑烷4a。 H反式关系以及其他异构体3a的数量取决于后处理程序(有或没有NaBH 4还原)。