The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2020
Filed:
Feb. 14, 2020
Lupin Limited, Mumbai, Maharashtra, IN;
Amit Madanrao Agarkar, Maharashtra, IN;
Tejas Vilas Puranik, Maharashtra, IN;
Rajesh Bharat Gapat, Maharashtra, IN;
Umesh Babanrao Rananaware, Maharashtra, IN;
Radhakrishna Bhikaji Shivdavkar, Maharashtra, IN;
Girij Pal Singh, Maharashtra, IN;
LUPIN LIMITED, Mumbai, Maharashtra, IN;
Abstract
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.