Butyric Acid → HCID 13686761, compound

Participants

Reaction Steps

In the same manner as described in Example 1-(2), 1.50 g of Nα -(t-butyloxycarbonyl-alanyl-D-isoglutaminyl)-lysine and 1.01 g of an N-hydroxy-5-norbornene-2,3-dicarboxyimide active ester of butyric acid were reacted to obtain 1.57 g of Nα -(t-butyloxycarbonyl-alanyl-D-isoglutaminyl)-Nε -butyryl-lysine; melting point: 84°-87° C. (decomp.); [α]D25 -12.2° (c 0.9, methanol).

Provenance & Evidence