2,3-Butanediol diester derivatives, process for producing the same, and an antiulcer drug containing the same.

摘要

The specification describes as antiulcer drug containing as an active ingredient a 2,3-butanediol diester derivative represented by the formula (I):
<Chemistry id="chema01" num="0001"><Image id="ia01" he="30" wi="65" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>where RA may for example be a saturated or unsaturated alkyl or phenyl styryl group and R<Sub>B</Sub> may for example be a saturated or unsaturated alkyl, phenyl, phenylalkyl, phenylpropenyl or phenoxyalkyl group. These groups may optionally be substituted. Many of 2,3-butanediol diester derivatives embraced by the formula (I) are novel. Also described are a novel process for preparing such novel 2,3-butanediol diester derivatives. The 2,3-butandiol diester derivatives of the formula (I) has an action to depress strongly the growth of peptic ulcer and has a very low toxicity.