Patent ID: 7189847
Filing Date: 2007-03-13
Classification: A61P,C07B,C07C,C07D,C12P,Y02P

Abstract:
1. A process for producing a compound represented by the formula (VI-a): which comprises reacting a compound represented by formula (III-1-a): or a compound represented by the following formula with a metal borohydride compound in an aprotic solvent in the presence of an alcohol to give a compound represented by formula (IV-a): reacting this compound with a compound represented by the following formula under basic conditions: to give a compound represented by formula (V-a): and then treating this compound under basic conditions; wherein, in the above formulae, X R R R Y represents an alkoxy group having 1 to 6 carbon atoms, a halogen atom or a dialkylamino group (wherein the alkyl groups may be the same or different and each represents an alkyl group having 1 to 6 carbon atoms).