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US 12,747,254 B2Granted
Process for preparing heterocyclic pharmaceutical compounds
AssigneeHoffmann-La Roche Inc.
InventorsJean-Michel Adam, Christophe Pfleger, Georg Wuitschik
Life of this patent
Estimating the term…
Abstract
The present invention relates to a process for the preparation of 7-(4.7-diazaspiro[2.5]octan-7-yl)-2-(2.8-dimethylimidazo[1.2-b]pyridazin-6-yl)pyrido[1.2-a]pyrimidin-4-one derivatives useful as pharmaceutically active compounds.
Claims16
A process for the preparation of a compound of formula (I) or the HCl salt thereof:
- which comprises reacting compound of formula (II):
- with a strong acid.
A compound of formulae (II) or (III):
Dependencies are inferred from the claim text.