H. Heitsch et al., SYNTHESIS OF THE IMIDAZOLE-DERIVED AT(1)-SELECTIVE ANG-II RECEPTOR ANTAGONIST HR-720 UTILIZING REDUCTIVE AMINATION AS KEY STEP, Synthesis, (11), 1996, pp. 1325
The straightforward synthesis of the (1-methylbiphenylsulfonyl)urea su
bstituted imidazole HR 720, an orally active ANG II receptor antagonis
t, by reductive amination of 2'-sulfonamidobiphenylcarbaldehydes, deri
ved from Suzuki-type phenyl-phenyl coupling procedures, as key step is
described.