1-((2-[1,1'-Biphenyl]-4-yl-4-methylene-5-oxotetrahydro-2-furanyl)methyl)-5-bromo-2,4(1H,3H)-pyrimidinedione 2-(5-Bromouracil-1-yl)-4-methylene-5-oxo-2-(p-phenylphenyl)-2,3,4, 5-tetrhydrofuran AIDS-144821 AIDS144821 NSC668260