Patent ID: 7189706

Claim:
A compound of the general formula (I): wherein W represents an oxygen atom or a sulfur atom; R 1 represents lower alkyl or lower cycloalkyl; R 2 represents halogen, lower alkenyl, lower alkynyl or lower alkylidenehydrazino; R 3 represents hydrogen, lower alkyl, lower cycloalkyl, (ar)alkyl, aryl or anilide; wherein said cycloalkyl aryl and (ar)alkyl may be substituted with one or more substituents selected from halogen, hydroxyl, and ahydroxyalkyl; or a salt of said compound, with the exclusion of the following compounds: 2-fluoro-5′-methylthioadenosine; 2-chloro-5′-deoxy-5′-methylthioadenosine; 2-fluoro-5′-deoxy-5′-ethylthioadenosine; 2-chloro-5′-deoxy-5′-ethylthioadenosine; and 5′-deoxy-5′-butylthio-2-chloroadenosine.