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|1. (WO2018181883) 4-PYRIDONE COMPOUND OR SALT THEREOF, AND PHARMACEUTICAL COMPOSITION AND FORMULATION INCLUDING SAME|
|Title:||4-PYRIDONE COMPOUND OR SALT THEREOF, AND PHARMACEUTICAL COMPOSITION AND FORMULATION INCLUDING SAME|
The purpose of the present invention is to provide: a compound having anti-HBV activity or a salt thereof; a pharmaceutical composition; an anti-hepatitis B virus agent; a DNA generation inhibitor of a hepatitis B virus; and a hepatitis B surface antigen generation or secretion inhibitor. According to the present invention, provided are a compound or a salt thereof, the compound being represented by general formula  (in the formula, R1 represents a substitutable benzothiazolyl group (here, carbon atoms constituting a 6-membered ring of the benzothiazolyl of R1 bond to the nitrogen atom of a pyridine ring); R2 represents a substitutable C2-6 alkenyl group or the like; and R3 represents a hydrogen atom or the like).