An efficient synthesis of pyrido-imidazodiazepinediones
2013
Abstract We herein report the synthesis of a series of 12 optically pure 3,4-dihydro-1 H -pyrido-[1′,2′:1,2]-imidazo[4,5- d ][1,3]diazepine-2,5-diones, which form a new family of azaheterocycle-fused [1,3]diazepines. The key step of the synthesis consists in a selective C-acylation of 2-amino-imidazo[1,2- a ]pyridine by various natural amino-acids, followed by an intracarbonylation reaction.
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