反应详情

85 μl of diisopropylethylamine and 86 μl of diphenyl chlorophosphate were simultaneously added, whilst ice-cooling, to a solution of 161 mg of 4-nitrobenzyl (5R,6S)-6-[(1R)-1-hydroxyethyl]-2-oxo-1-carbapenam-3-carboxylate in 2 ml of anhydrous acetonitrile, and the resulting mixture was stirred at the same temperature for 1 hour. At the end of this time, 232 μof diisopropylethylamine and a solution of 310 mg of (2S,4S)-4-mercapto-2-(4-methyl-1-piperazinylcarbonyl)-1-(4-nitrobenzyloxycarbonyl)pyrrolidine trifluoromethanesulfonate [prepared as described in Example 1(1)] in 2 ml of anhydrous acetonitrile were added dropwise to the mixture, whilst ice-cooling, and the resulting mixture was stirred at the same temperature for 2 hours, after which it was allowed to stand overnight, whilst ice-cooling. At the end of this time, the solvent was removed by distillation under reduced pressure, and the resulting residue was worked up and purified in a similar manner to that described in Example 29(1), to afford 209 mg of the title compound as a powder.

1. temperaturecooling
2. stirringthe resulting mixture was stirred at the same temperature for 2 hours
3. waitto stand overnight, whilst ice-
4. temperaturecooling
5. customAt the end of this time, the solvent was removed by distillation under reduced pressure
6. custompurified in a similar manner to that