| abstract |
1. A process for producing a compound having the formula (XII'): <CHEM> wherein Q' represents an optionally substituted phenyl group and X represents a hydrogen atom, a halogen atom, an alkoxy group, or an optionally substituted alkyl group, that process comprises reacting a benzophenon derivative having the formula (XIII): <CHEM> wherein Q' and X are the same as defined above, and L represents a group which can be easily exchanged with an amino group, with a piperazine derivative having the formula (XIV): <CHEM> wherein W represents a hydrogen atom, a benzyl group, a p-methoxybenzyl group, a benzyloxycarbonyl group, a p-methoxybenzyloxycarbonyl group, a p-nitrobenzyloxycarbonyl group, a tert-butoxycarbonyl group, an ethoxycarbonyl group or an acetyl group to give a compound having the formula (XV): <CHEM> wherein Q', W and X are the same as defined above, and the subsequent reduction and deprotection of the compound having the formula (XV). |