p. 1316 - 1323
(2007/10/02)1,2-diphenyl-3,5-dimethyl-6,7-dibenzyloxycarbonyl-4-oxo-6,7-diazabicyclo<3.2.0>hept-2-ene
benzyl chloroformate
1,2-diphenyl-3,5-dimethyl-4-oxo-6,7-diazabicyclo<3.2.0>hept-2-ene
1,2-diphenyl-3,5-dimethyl-4-oxo-6,7-diazabicyclo<3.2.0>hept-2-ene
6,7a-Dimethyl-1-(4-nitro-benzoyl)-3-(4-nitro-phenyl)-4a,5-diphenyl-4a,7a-dihydro-1H-cyclopenta[1,3,4]oxadiazin-7-one
1-Benzoyl-6,7a-dimethyl-3,4a,5-triphenyl-4a,7a-dihydro-1H-cyclopenta[1,3,4]oxadiazin-7-one
3,5,6,6-Tetramethyl-4-oxo-1,2-diphenyl-7-aza-6-azonia-bicyclo[3.2.0]hept-2-ene; iodide
cis-1-ethoxycarbonyl-3-p-nitrophenyl-6,7a-dimethyl-7-oxo-1,4a,7,7a-tetrahydrocyclopent