申请人:FUJISAWA PHARMACEUTICAL CO
公开号:WO2001060786A1
公开(公告)日:2001-08-23
A compound of the formula [Ig]; wherein R1 is hydrogen or an amino protective group, R¿2? is hydrogen or hydroxy, and R3 and R4 are independently N-methyl-methoxycarbonylamino, N-ethyl-methoxycarbonylamino, N-propyl-methoxycarbonylamino or 3-ethylureid, or R?3 and R4¿ are both methoxycarbonylamino substituted at a meta position of the benzene rings, or a salt thereof, and (2S)-1-phenoxy-3-[3,3-bis[4-methoxycarbonylamino)-phenyl]propylamino]-2-propanol sulfate (2:1) and some crystal forms thereof as β¿3?adrenergic receptor agonists.