4'-C-ETHYNYL PYRIMIDINE NUCLEOSIDE COMPOUNDS

摘要

The invention provides 4'-C-ethynyl pyrimidine nucleosides (other than 4'-C-ethynylthymidine) represented by formula ¢I!: (see above formula) wherein B represents a base selected from the group consisting of pyrimidine and derivatives thereof; X represents a hydrogen atom or a hydroxyl group; and R represents a hydrogen atom or a phosphate residue; and a pharmaceutical composition containing any one of the compounds and a pharmaceutically acceptable carrier. Preferably, the composition is used as an anti-HIV agent or a drug for treating AIDS.