申请人:LUPIN LIMITED
公开号:US20200262788A1
公开(公告)日:2020-08-20
The present invention provides process for preparation of molindone (I) comprising: a) reacting compound with cyclohexane-1,3-dione to form 2-(2-oxopentan-3-yl)cyclohexane-1,3-dione wherein X is Cl, Br or I, b) cyclizing 2-(2-oxopentan-3-yl)cyclohexane-1,3-dione to 2-methyl-3-ethyl-4-oxo-4,5,6,7-tetrahydroindole, c) reacting 2-methyl-3-ethyl-4-oxo-4,5,6,7-tetrahydroindole with morpholine and formaldehyde to give molindone (I), and d) optionally converting molindone (I) to its salt. The present invention further provides process for preparation of compound comprising: a) reacting compound with ethyl halide and another halide source to form compound wherein R is alkyl and X is Cl, Br or I; b)converting compound to compound.
本发明提供了制备莫林酮(I)的方法,包括:a)将化合物与环己烷-1,3-二酮反应,形成2-(2-氧代戊酰基)环己烷-1,3-二酮,其中X为Cl、Br或I;b)将2-(2-氧代戊酰基)环己烷-1,3-二酮环化为2-甲基-3-乙基-4-氧代-4,5,6,7-四氢吲哚;c)将2-甲基-3-乙基-4-氧代-4,5,6,7-四氢吲哚与吗啉和甲醛反应,得到莫林酮(I);d)可选择将莫林酮(I)转化为其盐。本发明还提供了制备化合物的方法,包括:a)将化合物与乙基卤代烃和另一卤代源反应,形成化合物,其中R为烷基,X为Cl、Br或I;b)将化合物转化为化合物。