Novel cyclobutane Derivatives, processes for their preparation and pharmaceutical compositions comprising them
申请人:Nippon Kayaku Kabushiki Kaisha
公开号:EP0330992A3
公开(公告)日:1991-11-06
The invention is directed to cyclobutane derivatives represented by general formula (I):
wherein A represents a hydrogen atom, a hydroxy group, an azido group or an amino group; and B represents a purine residue or a pyrimidine residue. The cyclobutane derivatives exhibit antiviral and antitumor activities and are thus expected as drugs.