| 摘要 |
Intermediates represented by the following formula:(wherein R1 is a hydrogen atom, an alkyl group, an aryl group, an aralkyl group or the like; X is a carboxyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an aralkoxycarbonyl group, a formyl group, -CH2-Y, -CHZ1Z2, -CH(OR4)OR5 or the like), in the synthesis of biphenylamidine derivatives to be used as inhibitors for an activated blood coagulation factor X, and a process for preparing the same.
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