| abstract |
(57) [Summary] [Structure] The following general formula: (In the formula, R 1 and R 2 are the same or different and are a lower alkyl group, R 3 and R 4 are the same or different and are a hydrogen atom, a lower alkyl group or an amino protecting group, and R 5 is a hydrogen atom or an amino protecting group. 3-amino-indicated by 4,4-Dialkylpyrrolidine derivatives and salts thereof. [Effect] These compounds are useful as synthetic intermediates for pharmaceuticals such as antibacterial agents, antitumor agents, AIDS virus therapeutic agents and agricultural chemicals. |