Journal of Organic Chemistry p. 6147 - 6149 (1994)
Update date:2022-07-30
Topics:
Lombart
Lubell
Enantiomerically pure (3S,6S,9S)-2-oxo-3-(N-BOC-amino)-1-azabicyclo[4.3.0]nonane-9-carboxyli c acid ((3S,6S,9S)-1) was prepared in 39% overall yield from α-tert-butyl γ-methyl N-(9-(9-phenylfluorenyl))glutamate (5) using a Claisen condensation/reductive amination/lactam cyclization sequence.
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