| abstract |
A compound of the formula: ** Formula ** wherein: A is selected from an optionally substituted saturated, partially saturated or unsaturated 5- or 6-membered heterocycle; an optionally substituted C 1-6 alkoxyamine; an optionally substituted C1-6 alkylamine; an optionally substituted C0-6 alkylcarboxylic acid; an optionally substituted hydroxy C1-6 alkyl; an optionally substituted saturated or unsaturated C0-6 alkyl heterocyclyl bicyclo; and an optionally substituted saturated or unsaturated C 1-6 alkoxy heterocyclyl, or a pharmaceutically acceptable salt, stereoisomer, diasteromer, enantiomer, racemate, hydrate and / or solvate thereof. |