(2S,4S)-4-(4-methoxybenzyl)thio-1-(4-nitrobenzyloxycarbonyl)-L-proline → (2S,4S)-4-Mercapto-2-[(3R)-3-methyl-4-(4-nitrobenzyloxycarbonyl)piperazin-1-ylcarbonyl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidine

Participants

Reaction Steps

Following a procedure similar to that described in Preparation 8, but using 0.23 g of (2S,4S)-4-(4-methoxybenzylthio)-1-(4-nitrobenzyloxycarbonyl)-2-pyrrolidinecarboxylic acid, 0.10 g of N,N'-carbonyldiimidazole and 0.17 g of (2R)-2-methyl-1-(4-nitrobenzyloxycarbonyl)piperazine, 0.21 g of the title compound was obtained as an amorphous solid.

Provenance & Evidence