Method of producing (3S,11aR)-6,8-dihalo-3-methyl-2,3,11,11a-tetrahydrooxazolo[3,2-a]pyrido[1,2-d]pyrazine-5,7-diones
US9969750B2 · kind B2 · utility
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Key dates
| Filing date | Sep 20, 2017 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Sep 20, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/13
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for preparing a compound shown by formula (W6):wherein each Hal is independently chloro or bromo, using a novel process for preparing a pyridine derivative represented by formula (W2), wherein R6d is as defined herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.