Preparation of 9-hydroxy-3-(2-hydroxyethyl)-2-methyl-4

Preparation of 9-hydroxy-3-(2-hydroxyethyl)-2-methyl-4

The present invention concerns a process for preparing crystalline 3-(2-chloro-ethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one substantially free of 2-acetylbutyrolactone.

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Hauptverfasser: Vreysen, Eduard Jozef Contantia, Van Dun, Joannes Petrus, Aelterman, Wim Albert Alex
Format: Patent
Sprache:eng
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creator Vreysen, Eduard Jozef Contantia
Van Dun, Joannes Petrus
Aelterman, Wim Albert Alex
description The present invention concerns a process for preparing crystalline 3-(2-chloro-ethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one substantially free of 2-acetylbutyrolactone.
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title Preparation of 9-hydroxy-3-(2-hydroxyethyl)-2-methyl-4
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