3,4-diphenylcyclopentan-1-one

1-phenylethanethione

ethyl 5-oxo-2,3-diphenylcyclopentane-1-carboxylate

2-ethoxycarbonyl-3,4-diphenylcyclobutane-1-carboxylate

3-(Adamant-1-yl)-3-phenyl-propionsaeureethylester