A compound of formula (1) ##STR1## it derivatives, its analogs, its tautomeric forms, its stereoisomers, its polymorphs, its pharmaceutically acceptable salts, or its pharmaceutically acceptable solvates, processes for its preparation and methods of use thereof.

Un residuo del ## del ## STR1 di formula (1) esso derivati, i relativi analoghi, le relative forme tautomeric, i relativi stereoisomeri, i relativi polimorfi, i relativi sali farmaceuticamente accettabili, o i relativi solvates farmaceuticamente accettabili, procedimenti per la relativa preparazione e metodi di uso di ciò.