p. 7558 - 7564
(2007/10/03)(5R,7S)-5-cyano-7-hydroxy-2-phenyl-3-oxa-1-azabicyclo[3.3.0]octan-8-one
(3R)-5-tert-butyldimethylsiloxy-3-phenyl-1H-pyrrolo[1,2-c]oxazole
(2R,5R)-5-hydroxy-2-phenyl-3-oxa-1-azabicyclo[3.3.0]octan-8-one
(2R,5R)-5-cyano-2-phenyl-3-oxa-1-azabicyclo[3.3.0]octan-8-one
diazomethane