A series of ursolic acid derivatives were synthesized and spectrally characterized.
Compounds class="boldFont">3–class="boldFont">5 and class="boldFont">8 are more potent in vitro than acarbose and UA.
The kinetic study of compounds class="boldFont">3–class="boldFont">5 and class="boldFont">8 was carried out.
Both compounds class="boldFont">3 and class="boldFont">4 have hypoglycemic effect in vivo.