NUCLEOSIDE DERIVATIVES AND ANTI-HERPES COMPOSITION

摘要

NUCLEOSIDE DERIVATIVES AND ANTI-HERPES COMPOSITION Disclosed is a novel nucleoside derivative showing anti-virus activities such as an anti-herpes activity and an anti-HIV activity. The nucleoside derivative has the formula (1-1) or (1-2): <IMG> <IMG> (1-1) (1-2) wherein A is a nitrogen atom-containing heterocyclic ring which is linked through nitrogen atom thereof; B is a hydrogen atom, a halogen atom, an azido group, an alkyl group, etc.