Disclosed is a novel adamantine derivative compound, an isomer thereof, pharmaceutically acceptable salt thereof, prodrug thereof, hydrate thereof or a solvate thereof. Also disclosed is a method for preparing a novel adamantine derivative compound, an isomer thereof, pharmaceutically acceptable salt thereof, prodrug thereof, hydrate thereof or a solvate thereof. The novel adamantane derivative compound or the like has an excellent anti-androgenic effect.

The present invention relates to novel compounds and compositions having antiviral activity. The invention also relates to methods for the therapeutic or prophylactic treatment of viral infections in mammals.