| 摘要 |
A process for converting human des-B30-insulin, namely <IMAGE> I into h-In-ThrB30 esters through amidation with an L-threonine ester in a mixture of water and a water miscible solvent in the presence of trypsin and optionally an acid. Yields in excess of at least 90% are obtained by limiting water content to 10%-30% v/v of the reaction mixture. |
