Antiulcer Activity of 3-Hydroxyimino Derivatives of Minor Triterpenoids of Licorice Root

3-Hydroxyimino derivatives of minor licorice triterpenoids possessed pronounced antiulcer activity and protected rat gastric mucosa from ulceration in indomethacin and orthophen ulcer models at a dose of 50 mg/kg. 3-Hydroxyimino-11-deoxoglycyrrhetic acid was the most active antiulcerogenic substance and was superior in activity to carbenoxolone.