abstract the present invention relates to novel biologically active glutarimide derivatives of general formula i or pharmaceutically acceptable salts thereof, their use as an agent for the treatment of upper respiratory tract diseases, pharmaceutical compositions comprising the glutarimide derivatives of general formula i, methods for preparing the glutarimide derivatives of general formula i by heating a dicarboxylic acid monoamide of general formula ii with a dehydrating agent. ______________________________________________________________ patent summary: "Glutarimide derivatives, their use, pharmaceutical composition based on them and methods for the production of glutarimide derivatives". The present invention relates to novel biologically active glutarimide derivatives of formula I or pharmaceutically acceptable salts thereof, the use thereof as agents for treating upper respiratory tract diseases, pharmaceutical compositions comprising the glutarimide derivatives of formula I Methods for the preparation of the glutarimide derivatives of formula I by heating a dicarboxylic acid monoamide of formula II with a dehydrating agent.abstract the present invention relates to novel biologically active glutarimide derivatives of general formula i or pharmaceutically acceptable salts thereof, their use as an agent for the treatment of upper respiratory tract diseases, pharmaceutical compositions comprising the glutarimide derivatives of general formula i, methods for preparing the glutarimide derivatives of general formula i by heating a dicarboxylic acid monoamide of general formula ii with a dehydrating agent. ______________________________________________________________ resumo patente de invenção: "derivados de glutarimida, uso dos mesmos, composição farmacêutica com base neles e métodos para a produção de derivados de glutarimida". a presente invenção refere-se a novos derivados de glutarimida biologicamente ativos de fórmula geral i ou sais farmaceuticamente aceitáv