Abstract: Filtration-function-equipped cooling water equipment that includes: filtration equipment connected to water-purifying, oxygen-supply-capable cooling water equipment, wherein the filtration equipment includes a filtration space for a filter, wherein the water-purifying, oxygen-supply-capable cooling water equipment comprises a cooling oxidation unit disposed inside of a tank body and comprising a honeycombed or latticed porous material, wherein the filtration-function-equipped cooling water equipment operates to enlarge a contact area between water and air when untreated water drips onto the cooling oxidation unit and flows through the cooling oxidation unit while forced air flows in a counter current against the flow of water in the cooling oxidation unit, thereby facilitating solubility of oxygen in the untreated water and augmenting a cooling capability due to evaporation provided by the water-purifying, oxygen-supply-capable cooling water equipment.

Abstract: The present invention provides a process for producing cilostazol [I] in a high yield and a high purity, by reacting a carbostyril derivative [II] with a tetrazole derivative [III] in the presence of an inorganic basic compound in a solvent of water, wherein water is used in an amount of 3 to 7-fold weight to that of the carbostyril derivative [II] and the inorganic basic compound is used in an amount of 1 to 6 mol per mol of the carbostyril derivative [II].

Abstract: Filtration-function-equipped cooling water equipment that includes: filtration equipment connected to water-purifying, oxygen-supply-capable cooling water equipment, wherein the filtration equipment includes a filtration space for a filter, wherein the water-purifying, oxygen-supply-capable cooling water equipment comprises a cooling oxidation unit disposed inside of a tank body and comprising a honeycombed or latticed porous material, wherein the filtration-function-equipped cooling water equipment operates to enlarge a contact area between water and air when untreated water drips onto the cooling oxidation unit and flows through the cooling oxidation unit while forced air flows in a counter current against the flow of water in the cooling oxidation unit, thereby facilitating solubility of oxygen in the untreated water and augmenting a cooling capability due to evaporation provided by the water-purifying, oxygen-supply-capable cooling water equipment.

Abstract: The present invention provides a process for producing cilostazol [I] in a high yield and a high purity, by reacting a carbostyril derivative [II] with a tetrazole derivative [III] in the presence of an inorganic basic compound in a solvent of water, wherein water is used in an amount of 3 to 7-fold weight to that of the carbostyril derivative [II] and the inorganic basic compound is used in an amount of 1 to 6 mol per mol of the carbostyril derivative [II]. The process of the present invention is the improved and environment-friendly process for producing cilostazol being useful for pharmaceuticals.

Abstract: Novel benzoheterocyclic compounds of the formula: ##STR1## wherein R.sup.1 is H, halogen, alkyl, optionally substituted amino, alkoxy; R.sup.2 is H, halogen, alkoxy, phenylalkoxy, OH, alkyl, optionally substituted amino, carbamoyl-alkoxy, optionally substituted amino-alkoxy, optionally substituted benzoyloxy; R.sup.3 is a group: --NR.sup.4 R.sup.5 or --CO--NR.sup.11 R.sup.12 ; R.sup.4 is H, optionally substitued benzoyl, alkyl; R.sup.5 is a group: ##STR2## [R.sup.16 is halogen, optionally substituted alkyl, OH, alkoxy, alkanoyloxy, alkylthio, alkanoyl, carboxy, alkoxycarbonyl, CN, NO.sub.2, optionally substituted amino, phenyl, cycloalkyl, etc., or a group: --O--A--NR.sup.6 R.sup.7 ; m is 0 to 3], phenyl-alkoxycarbonyl, alkanoyl, phenylalkanoyl, etc.; R.sup.11 is H or alkyl; R.sup.12 is cycloalkyl or optionally substituted phenyl; and W is a group: --(CH.sub.2).sub.p (p is 3 to 5) or --CH.dbd.CH--(CH.sub.2).sub.q (q is 1 to 3), the carbon atom of these groups beign optionally replaced by O, S, SO, SO.sub.

Abstract: Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.1 is cyclopropyl which may have 1 to 3 substituents of alkyl and halogen; phenyl which may be substituted by 1 to 3 substituents of alkoxy, halogen and OH; alkyl which may be substituted by halogen, alkanoyloxy or OH; alkenyl; or thienyl, R.sup.2 is 5- to 9-membered saturated or unsaturated heterocyclic ring which may be substituted, R.sup.3 is alkyl, R is H or alkyl, and X is halogen, and pharmaceutically acceptable salts thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.

Abstract: Novel benzoheterocyclic compounds of the formula: ##STR1## which have excellent vasopressin antagonistic activities and are useful as vasodilator, hypotensive agent, water diuretics, platelet agglutination inhibitor, and a vasopressin antagonistic composition containing the compound as the active ingredient.

Abstract: Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.1 is cyclopropyl which may have 1 to 3 substituents of alkyl and halogen; phenyl which may be substituted by 1 to 3 substituents of alkoxy, halogen and OH; alkyl which may be substituted by halogen, alkanoyloxy or OH; alkenyl; or thienyl, R.sup.2 is 5- to 9-membered saturated or unsaturated heterocyclic ring which may be sustituted, R.sup.3 is alkyl, R is H or alkyl, and X is halogen, and pharmaceutically acceptable salts thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.

Abstract: Novel carbostyril derivatives of the formula: ##STR1## wherein R.sup.1 is H, NO.sub.2, alkoxy, alkoxycarbonyl, alkyl, halogen, optionally substituted amino, OH, CN, COOH, alkanoyloxy, hydrazinocarbonyl; q is 1 to 3, and R is a group of the formula: ##STR2## [wherein R.sup.2 is H, alkoxycarbonyl, optionally substituted phenoxycarbonyl, phenylalkenyl-CO--, optionally substituted phenylalkanoyl, alkanoyl, alkenyl-CO--, optionally substituted phenyl-SO.sub.2 --, --CONR.sup.8 R.sup.9, optionally substituted heterocyclic group-CO--, naphthyl-CO--, thienylalkanoyl, tricyclo[3.3.1.1]alkanoyl, ##STR3## (R.sup.13 is OH, optionally substituted alkoxy, --NR.sup.32 R.sup.33, --O--A--(E).sub.l --NR.sup.4 R.sup.5, --(B).sub.l --NR.sup.6 R.sup.7, etc.),n is 1 or 2, m is 0 or 1 to 3, R.sup.3 is alkyl, R.sup.10 is --(CO).sub.l --NR.sup.11 R.sup.

Abstract: Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.1 is cyclopropyl which may have 1 to 3 substituents of alkyl and halogen; phenyl which may be substituted by 1 to 3 substituents of alkoxy, halogen and OH; alkyl which may be substituted by halogen, alkanoyloxy or OH; alkenyl; or thienyl, R.sup.2 is 5- to 9-membered saturated or unsaturated heterocyclic ring which may be sustituted, R.sup.3 is alkyl or halogen, R.sup.4 is alkyl or halogen, R is H or alkyl, R.sup.1 and R.sup.3 may be taken together to form ##STR2## wherein R.sup.31 is H or alkyl, and X is halogen, provided that R.sup.3 and R.sup.4 are not simultaneously halogen, and salts thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.

Abstract: Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.1 is cyclopropyl which may have 1 to 3 substituents of alkyl and halogen; phenyl which may be substituted by 1 to 3 substituents of alkoxy, halogen and OH; alkyl which may be substituted by halogen, alkanoyloxy or OH; alkenyl; or thienyl, R.sup.2 is 5- to 9-membered saturated or unsaturated heterocyclic ring which may be sustituted, R.sup.3 is alkyl, R is H or alkyl, and X is halogen, and pharmaceutically acceptable salts thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.

Abstract: Novel benzoheterocyclic compounds of the formula: ##STR1## wherein R.sup.1 is H, halogen, alkyl, optionally substituted amino, alkoxy; R.sup.2 is H, halogen, alkoxy, phenyialkoxy, OH, alkyl, optionally substituted amino, carbamoyl-alkoxy, optionally substituted amino-alkoxy, optionally substituted benzoyloxy; R.sup.3 is a group: --NR.sup.4 R.sup.5 or --CO--NR.sup.11 R.sup.12 ; R.sup.4 is H, optionally substituted benzoyl, alkyl; R.sup.5 is a group: ##STR2## [R.sup.16 is halogen, optionally substituted alkyl, OH, alkoxy, alkanoyloxy, alkylthio, alkanoyl, carboxy, alkoxycarbonyl, CN, NO.sub.2, optionally substituted amino, phenyl, cycloalkyl, etc., or a group: --O--A--NR.sup.6 R.sup.7 ; m is 0 to 3], phenyl-alkoxycarbonyl, alkanoyl, phenylalkanoyl, etc.; R.sup.11 is H or alkyl; R.sup.12 is cycloalkyl or optionally substituted phenyl; and W is a group: --(CH.sub.2).sub.p (p is 3 to 5) or --CH.dbd.CH--(CH.sub.2).sub.q (q is 1 to 3), the carbon atom of these groups being optionally replaced by O, S, SO, SO.sub.

Abstract: Useful as intermediates for antimicrobacterial agents are compounds of the formulas ##STR1## wherein R.sup.1A is a cyclopropyl which may be substituted by 1 to 3 substituents selected from the group consisting of a C.sub.1 -C.sub.6 alkyl and a halogen atom; a phenyl which may be substituted by 1 to 3 substituents selected from the group consisting of a C.sub.1 -C.sub.6 alkoxy, a halogen atom and hydroxy on the phenyl group; a C.sub.1 -C.sub.6 alkyl which may be substituted by a halogen atom, a C.sub.1 -C.sub.6 alkanoyloxy or hydroxy; a C.sub.2 -C.sub.6 alkenyl; or thienyl,R.sup.3A is a C.sub.1 -C.sub.6 alkyl group, or a halogen atom,R.sup.4 is a C.sub.1 -C.sub.6 alkyl group,R.sup.14 is a hydrogen atom, a lower alkyl group, or a group of the formula ##STR2## R.sup.31 is hydrogen or a C.sub.1 -C.sub.6 alkyl group, and X and X.sup.4 are halogen atoms, and salts thereof.

Abstract: Novel carbostyril derivatives of the formula: ##STR1## wherein R.sup.1 is H, NO.sub.2, alkoxy, alkoxycarbonyl, alkyl, halogen, optionally substituted amino, OH, CN, COOH, alkanoyloxy, hydrazinocarbonyl; q is 1 to 3, and R is a group of the formula: ##STR2## [wherein R.sup.2 is H, alkoxycarbonyl, optionally substituted phenoxycarbonyl, phenylalkenyl--CO--, optionally substituted phenylalkanoyl, alkanoyl, alkenyl--CO--, optionally substituted phenyl--SO.sub.2 --, --CONR.sup.8 R.sup.9, optionally substituted heterocyclic group--CO--, naphthyl--CO--, thienylalkanoyl, tricyclo[3.3.1.1]alkanoyl, ##STR3## (R.sup.13 is OH, optionally substituted alkoxy, --NR.sup.32 R.sup.33, --O--A--(E).sub.l --NR.sup.4 R.sup.5, --(B).sub.l --NR.sup.6 R.sup.7, etc.), n is 1 or 2, m is 0 or 1 to 3, R.sup.3 is alkyl, R.sup.10 is --(CO).sub.l --NR.sup.11 R.sup.

Abstract: Novel carbostyril derivatives of the formula: ##STR1## wherein X is 0 or S; Y is H or alkyl; R.sup.A is a group of the ##STR2## {wherein n is 1 or 2, A is alkylene, R.sup.1 is benzoyl having optionally 1-3 substituents, R.sup.2A is ##STR3## is (i) alkoxy, (ii) substituted or unsubstituted 5- or 6-membered heterocylic group, (iii) alkenylthio, (iv) pyrrolidinyl-alkyl--S--, (v) pyrrolidinyl-alkyl--SO--, (vi) pyrrolidinyl-alkyl--SO.sub.2 --, (vii) --O--B--NR.sup.4 R.sup.5 [B is alkylene having optionally OH, R.sup.4 is H, R.sup.5 is tricyclo[3.3.1.1]decanyl, tricyclo[3.3.1.1]decanylalkyl, etc., or R.sup.4 and R.sup.5 may together form a group of ##STR4## (R.sup.6 is substituted or unsubstituted amino)] or (viii) substituted alkoxy; m is 1 to 3]}, which have excellent vasopressin antagonistic activities and are useful as vasodilator, hypotensive agent, water diuretics, platelet agglutination inhibitor, and a vasopressin antagonistic composition containing the compound as the active ingredient.

Abstract: Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.1 is cyclopropyl which may have 1 to 3 substituents of alkyl and halogen; phenyl which may be substituted by 1 to 3 substituents of alkoxy, halogen and OH; alkyl which may be substituted by halogen, alkanoyloxy or OH; alkenyl; or thienyl, R.sup.2 is 5- to 9-membered saturated or unsaturated heterocyclic ring which may be substituted, R.sup.3 is alkyl, R is H or alkyl, and X is halogen, and pharmaceutically acceptable salts thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.

Abstract: Novel carbostyril derivatives of the formula: ##STR1## wherein R.sup.1 is H, NO.sub.2, alkoxy, alkoxycarbonyl, alkyl, halogen, optionally substituted amino, OH, CN, COOH, alkanoyloxy, hydrazinocarbonyl; q is 1 to 3, and R is a group of the formula ##STR2## [wherein R.sup.2 is H, alkoxycarbonyl, optionally substituted phenoxycarbonyl, phenylalkenyl-CO-, optionally substituted phenylalkanoyl, alkanoyl, alkenyl-CO-, optionally substituted phenyl--SO.sub.2 --, --CONR.sup.8 R.sup.9, optionally substituted heterocyclic group--CO--, naphthyl--CO--, thienylalkanoyl, tricyclo[3.3.1.1]alkanoyl, ##STR3## (R.sup.13 is OH, optionally substituted alkoxy, --NR.sup.32 R.sup.33, --O--A--(E).sub.l --NR.sup.4 R.sup.5, --(B).sub.l 'NR.sup.6 R.sup.7, etc.), n is 1 or 2, m is 0 or 1 to 3, R.sup.3 is alkyl, R.sup.10 is --(CO).sub.l --NR.sup.11 R.sup.

Abstract: Novel 3-formyl-4-oxoquinoline compounds of the formula: ##STR1## wherein R.sup.1 is hydrogen atom or a lower alkanoyl, R.sup.2 is hydrogen atom or a lower alkyl, R.sup.3 is a lower alkyl, and X is halogen, and pharmaceutically acceptable salts thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.

Abstract: Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.2 is a morpholino group which may be substituted by one to three C.sub.1 -C.sub.6 alkyl groups where each of the alkyl group may be substituted by 1 to 3 substituents selected from the group consisting of --NH.sub.2 and a halogen atom, and R.sup.3 is a C.sub.1 -C.sub.6 alkyl, --CH.sub.2 OH, ##STR2## (C.sub.1 -C.sub.6)alkylthiomethyl and --CH.sub.2 -halogen, or a pharmaceutically acceptable salt thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.

Abstract: Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.2 is a heterocyclic group: ##STR2## in which R.sup.A is H, C.sub.1 -C.sub.6 alkyl or phenyl (C.sub.1 -C.sub.6) alkyl, R.sup.B is 2-oxo-1,3-dioxolenemethyl substituted by C.sub.1 -C.sub.6 alkyl, or C.sub.3 -C.sub.8 cycloalkyl, R.sup.C is H, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxycarbonyl, or phenyl(C.sub.1 -C.sub.6)alkyl, R.sup.D is H or C.sub.1 -C.sub.6 alkyl, R.sup.G is C.sub.1 -C.sub.6 alkyl, and R.sup.H is C.sub.1 -C.sub.6 alkyl, phenyl(C.sub.1 -C.sub.6)alkyl, or C.sub.1 C.sub.6 alkanoyl, and R.sup.3 is C.sub.1 -C.sub.6 alkyl, or R.sup.3 is C.sub.1 -C.sub.6 alkyl having 1 to 3 substituents selected from OH, C.sub.1 -C.sub.6 alkoxy and halogen when R.sup.2 is ##STR3## or a salt thereof, said compounds having excellent antimicrobial activity and being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.