Organic compounds

A Compound of Formula I

• wherein
• (i) R1 is C1-4alkyl
• (ii) R2 is selected from the group consisting of:
• H,
• —OH,
• halo,
• C1-4alkyl,
• C1-4alkoxy,
• —N(Rf)(Rg),
• —C(O)N(Rh)(Ri),
• —C(O)ORj,
• —CN,
• C1-4alkylthio,
• heteroaryl,
• heteroC3-7cycloalkyl or pyrrolidinyl, and
• aryloxy wherein said aryl is optionally substituted with one or more halo;
• (iii) R3 is H or C1-4alkyl;
• (iv) Ra, Rb, Rc, Rd and Re are independently H, halo, —O—C1-6alkyl;
• (v) Rf and Rg are independently H, C1-4alkyl or heteroaryl;
• (vi) Rh and Ri are independently H or C1-4alkyl;
• (vii) Rj is H or C1-4alkyl;
• in free or salt form.