DERIVATIVES OF PYRAZINE AND THEIR SALTS, PHARMACEUTICAL COMPOSITION COMPRISING THESE COMPOUNDS Russian patent published in 2005 - IPC

FIELD: organic chemistry, medicine, pharmacy.

SUBSTANCE: invention relates to derivatives of pyrazine of the general formula (I):

wherein R¹ means hydrogen (H) or halogen atom; R², R³ and R⁵ mean hydrogen atom (H); R⁴ and R⁶ mean hydroxy-group optionally protected with acetyl or benzoyl group; A means oxygen atom (O); n = 0; Y means oxygen atom (O), or their salts. Compounds show the excellent anti-viral activity and useful as a therapeutic agent in treatment of viral infections. Also, invention describes a pharmaceutical composition.

EFFECT: valuable medicinal properties of compounds and composition.

7 cl, 2 tbl, 15 ex