A method of producing an aminobutene derivative of formula (I) by allowing a butenol derivative of formula (II) to react with an amide derivative of formula (III) is disclosed. The aminobutene derivative of formula (I) can be deprotected to produce an aminobutene derivative of formula (I-1) or an aminobutene derivative of formula (I-2): ##STR1## The aminobutene derivative of formula (I-A) can also be deprotected to produce the aminobutene derivative of formula (I-B). Any or all of the above aminobutene derivatives are useful as intermediates for producing anti-ulcer drugs, and anti-ulcer drugs having an inhibitory effect on gastric acid secretion based on the antagonism against histamine H.sub.2 receptor.
Alkylamide derivatives with H2-receptor antagonistic and cytoprotective action
申请人:FUJIREBIO KABUSHIKI KAISHA
also trading as FUJIREBIO INC.
公开号:EP0214823A2
公开(公告)日:1987-03-18
Alkylamide derivatives having the formula,
These compounds have a strong antiulcer action depend on histamine H2-receptor antagonistic action and a cytoprotective action upon gastric mucous membrance.