Benzyl {(1S)-1-[({(2S)-2,5-bis[(tert-butoxycarbonyl)amino]pentyl}amino)carbonyl]-4-[(tert-butoxycarbonyl)amino]butyl}carbamate → Tert-butyl[(4s)-4-amino-5-({(2s)-2,5-bis[(tert-butoxycarbonyl)amino]pentyl}amino)-5-oxopentyl]carbamate

Participants

Reaction Steps

Preparation takes place in analogy to Example 81A from 132 mg (0.20 mmol) of benzyl{(1S)-1-[({(2S)-2,5-bis[(tert-butoxycarbonyl)amino]pentyl}amino)carbonyl]-4-[(tert-butoxycarbonyl)amino]butyl}carbamate (Example 119A) in 50 ml of ethanol with the addition of 13 mg of palladium on activated carbon (10%). The product is reacted without further purification.

Provenance & Evidence