Abstract: The present invention is directed to a process for producing 2-hydroxybenzamide derivatives (2) or (5) according to either one of the following reaction schemes.

Abstract: The present invention relates to a substituted benzoylaminothiazole derivative represented by the following formula (I): ##STR1## wherein X represents an imino group which may be substituted by a lower alkyl group, or an oxygen atom, R.sup.1 represents a cyano group, a lower alkoxycarbonyl group, a lower alkoxycarbonylamino group, a lower alkylsulfonylamino group, a lower alkanoyl or lower alkylsulfonyl group which may be substituted by a halogen atom, a 1-ureido group, a halo-substituted lower alkyl group or a 2-pyrrolylimino group, R.sup.2 and R.sup.3 are the same or different and each independently represents a hydrogen atom or a lower alkyl group and m stands for an integer of 2 to 4, or a salt thereof; and a medicament comprising the compound as an effective ingredient. The compound of the invention is useful as a preventive and therapeutic agent for epigastric dyscomfort, nausea, vomiting, heartburn, anorexia, bellyache, abdominal flatulence, chronic gastritis or the like.

Abstract: The present invention relates to an aminothiazole derivative represented by the following formula (I): ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each independently represents a hydrogen atom, a hydroxy group, a lower alkyl group, a lower alkoxy group or the like; R.sup.4 represents a hydrogen atom or a lower alkyl group; R.sup.5 represents a hydrogen atom, a halogen atom or a lower alkyl group; m stands for an integer of 0 to 4, A represents a substituted amino group, a substituted imino group, a heterocyclic group or the like; and B stands for an imino group or an oxygen atom, a medicament containing it and an intermediate for the preparation of said compound. The compound has strong restoration effects on dysmotility in the gastrointestinal tract and at the same time has high safety so that it is useful as an excellent gastroprokinetic.

Abstract: A piperazine derivative represented by the following formula: ##STR1## or a pharmaceutically acceptable salt thereof. The compound according to the present invention has strong anti-histaminic and anti-allergic affects and a high degree of safety, and is useful as an anti-histaminic agent, an anti-allergic agent and/or an anti-asthmatic drug. Also disclosed are pharmaceutical compositions containing the compound of formula 1 and a method for the treatment of allergic diseases comprising administering the claimed compound.