This invention provides a novel compound that can effectively prevent the proliferation of
drug-resistant
hepatitis B viruses. [Solution] A hydrophobic tag and morphothiazine, which is an
allosteric modulator of the
hepatitis B
virus core protein, are linked by a
linker. The ring-type carbocyclic is any of the following:
adamantane ring,
norbornene ring,
norbornane ring, perhydroindene ring,
decalin ring, perhydrofluorene ring, perhydroanthracene ring, perhydrophenanthrene ring, tricyclodecane ring, tricycloundecane ring, tetracyclododecane ring, perhydroacenaphthene ring, or perhydrophenalene ring. The novel compound according to the present invention can effectively suppress the proliferation of
drug-resistant HBV.