| abstract |
PROBLEM TO BE SOLVED: To provide a physiologically active substance having a high inhibitory effect on dipeptidyl peptidase IV and a method for producing the same by chemical synthesis. SOLUTION: General formula: embedded image (Wherein n represents an integer of 0 to 3, provided that n is 2 and C ( Except when the configuration of * is S and the configuration of P * is R) Or a pharmaceutically acceptable salt thereof. |