... 0022-262319311836-2075$04.00/0 0 1993 American Chemical Society Page 2. 2076 Journal of Medicinal Chemistry, 1993, Vol. 36, No. 15 Scheme I a fPh ii (PhCH$HCH2) f“ i + BrCH(Cvt)Z Naylor et al. iii - vi - Ph- 3 4 (Ph TPh 7 CI NPh L 3 o w , ci 18-22 ...