METHOD FOR PRODUCING POLYMER CONJUGATE OF ISONICOTINIC ACID HYDRAZONE Russian patent published in 2012 - IPC A61K31/15 A61K31/722 C08G73/08 

Abstract RU 2454226 C1

FIELD: medicine, pharmaceutics.

SUBSTANCE: present invention refers to a method for producing a polymer conjugate of isonicotinic acid hydrazone applied as an anti-tuberculosis drug. The specified method consists in preparing 6-13 wt % pre-purified low-molecular chitosan in aqueous acetic acid with added 40% aqueous formaldehyde. The system is dispersed for 30 minutes at 25°C and for 60 minutes at 70°C. Further, the system is added with 1.5 mole chitosan-related isonicotinic acid hydrazide and acetyl chloride in a catalytic amount. The mixture is mixed and heated at 70°C for 5 hours. The prepared reaction mass is treated under vacuum; a solid residue is extracted in ethanol and dried.

EFFECT: higher drug adsorption in macrophages and its biodegradability.

4 ex

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RU 2 454 226 C1

Authors

Kupreev Nikolaj Iosifovich

Kuznetsov Vjacheslav Alekseevich

Bolgov Aleksej Aleksandrovich

Slivkin Aleksej Ivanovich

Dates

2012-06-27Published

2010-11-17Filed