| 摘要 |
<p>Endothelin antagoninst N-[[2'-[[(4,5-dimethyl-3-isoxazolyl)amino] sulfonyl]-4-(2-oxazolyl)[1,1'-biphenyl]-2-yl]methyl]-N,3,3-trimethylbutanamide surprisingly exists as separable enantiomeric atropisomers. The (+) dextrorotatory atropisomer demonstrates remarkably higher potency than either the (-) levorotatory atropisomer or the racemate.</p> |
