2-(5-(4-Chlorophenyl)-3-(4-(hydroxy(oxido)amino)phenyl)-4-isoxazolyl)-1,4,5,6-tetrahydropyrimidine 3-(4-Nitrophenyl)-4-(2-tetrahydropyrimidinyl)-5-(4-chloro- phenyl)-isooxazole AIDS-138364 AIDS138364 NSC645047