Patent ID: 7880013

Claim:
A thiazole derivative represented by formula (IA): wherein R 1A represents a 5-membered aromatic heterocyclic group containing at least one oxygen atom; n represents an integer of from 0 to 3; R 12 represents substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, substituted or unsubstituted aralkyl, a substituted or unsubstituted alicyclic heterocyclic group, a substituted or unsubstituted aromatic heterocyclic group, substituted or unsubstituted alicyclic heterocyclic-alkyl, or substituted or unsubstituted aromatic heterocyclic-alkyl; R 3A represents a hydrogen atom, or substituted or unsubstituted lower alkyl; and R 2A represents —COR 8 (wherein R 8 represents a substituted or unsubstituted aromatic heterocyclic group); or a pharmaceutically acceptable salt thereof.