(4R,4'R)-4,4'-Dimethyl-4,4',5,5'-tetrahydro-2,2'-bioxazole
(4S,4'S)-4,4'-Di-sec-butyl-4,4',5,5'-tetrahydro-2,2'-bioxazole
(4S,4'S)-4,4',5,5'-Tetrahydro-4,4'-diphenyl-2,2'-bioxazole
(4R,4'R)-4,4'-Diphenyl-4,4',5,5'-tetrahydro-2,2'-bioxazole
