... J. Heterocycl. Chem. 1972, 9, 395-397. 1128-1 138. 0022-2623/92/1S35-2184$03.00/0 C 1992 American Chemical Society Page 2. 2-Substituted 2-Azabicyclo[2.2.1]heptan-5-01~ and -6-01s Scheme I Journal of Medicinal Chemistry, 1992, Vol. 35, No. 12 2186 ...