... J. Med. Chem. 1982, 25, 36. 0 1985 American Chemical Society Page 2. 762 Journal of Medicinal Chemistry, 1985, Vol. 28, No. 6 Table I. 4-Benzoylpiperidines Strupczewski et al. yield," recrystC no. R X Y method % mp,b OC solvent formula anal.d C, H, N, F ...