Abstract: Dihydropyridine anti-ischaemic agents of the formula: ##STR1## and their salts where R is aryl or heteroaryl, R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.4 alkyl or 2-methoxyethyl, Y is --(CH.sub.2).sub.n -- where n is 2, 3, or 4 and is optionally substituted by 1 or 2 CH.sub.3 groups, and R.sup.3 is an optionally substituted 5- or 6-membered heterocyclic group attached to the adjacent N atom by a C atom, said group R.sup.3 being optionally fused to a further heterocyclic group or to a benzene ring.

Abstract: Dihydropyridine Anti-ischaemic agents of the formula ##STR1## and their salts where R is aryl, R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.4 alkyl or 2-methoxyethyl, Y is --(CH.sub.2).sub.n -- where n is 2, 3 or 4 and is optionally substituted by 1 or 2 methyl groups and R.sup.3 is pyrimidyl or di- or tetrahydropyrimidyl.

Abstract: 1,4-Dihydropyridine derivatives of the formula: ##STR1## wherein R is aryl or heteroaryl: R.sup.1 and R.sup.2 are each independently C.sub.1 -C.sub.4 alkyl or 2-methoxyethyl; Y is --(CH.sub.2).sub.n --, --CH.sub.2 CH(CH.sub.3)-- or --CH.sub.2 C(CH.sub.3).sub.2 --; n is 1 to 3; and X is a 5 or 6 membered nitrogen containing aromatic heterocyclic ring which may optionally be substituted by one or more C.sub.1 -C.sub.4 alkyl, phenyl, benzyl, CN, --N(R.sup.3).sub.2, (CH.sub.2).sub.m CO.sub.2 H, (CH.sub.2).sub.m CO.sub.2 (C.sub.1 -C.sub.4 alkyl) or (CH.sub.2).sub.m CON(R.sup.3).sub.2 group wherein each R.sup.3 is independently H or C.sub.1 -C.sub.4 alkyl and m is 0 or 1; and their pharmaceutically acceptable acid addition salts, and pharmaceutical preparation containing such compounds, have utility as anti-ischaemic and antihypertensive agents.

Abstract: Dihydropyridine anti-ischaemic agents of the formula: ##STR1## and their salts where R is aryl or heteroaryl, R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.4 alkyl or 2-methoxyethyl, Y is --(CH.sub.2).sub.n -- where n is 2, 3, or 4 and is optionally substituted by 1 or 2 CH.sub.3 groups, and R.sup.3 is an optionally substituted 5- or 6-membered heterocyclic group attached to the adjacent N atom by a C atom, said group R.sup.3 being optionally fused to a further heterocyclic group or to a benzene ring.

Abstract: A dihydropyridine compound of the formula ##STR1## or a pharmaceutically acceptable acid addition salt thereof, whereinY is --(CH.sub.2).sub.2 --, --(CH.sub.2).sub.3 --, --CH.sub.2 CH(CH.sub.3)-- or --CH.sub.2 C(CH.sub.3).sub.2 --;R is aryl or heteroaryl;R.sup.1 and R.sup.2 are each independently C.sub.1 -C.sub.4 alkyl or 2-methoxyethyl; andR.sup.3 is hydrogen, C.sub.1 -C.sub.4 alkyl, 2-(C.sub.1 -C.sub.4 alkoxy)ethyl, cyclopropylmethyl, benzyl, or --(CH.sub.2).sub.m COR.sup.4 where m is 1, 2 or 3 andR.sup.4 is hydroxy, C.sub.1 -C.sub.4 alkoxy or --NR.sup.5 R.sup.6 where R.sup.5 and R.sup.6 are each independently hydrogen or C.sub.1 -C.sub.4 alkylcan be employed for treating or preventing a heart condition or hypertension.

Abstract: 1,4-Dihydropyridine derivatives of the formula ##STR1## and their pharmaceutically acceptable acid addition salts; where:R is aryl or heteroaryl;R.sup.1 and R.sup.2 are each independently C.sub.1 -C.sub.4 alkyl or2-methoxyethyl;Y is --(CH.sub.2).sub.2 --, --CH.sub.2).sub.3 --, --CH.sub.2 CH(CH.sub.3)-- or --CH.sub.2 C(CH.sub.3).sub.2 --;R.sup.3 is ##STR2## , and pharmaceutical compositions containing such compounds, have utility as anti-ischaemic and antihypertensive agents.

Abstract: 1,4-Dihydropyridine derivatives of the formula: ##STR1## and their pharmaceutically acceptable acid addition salts; where R is aryl or heteroaryl;R.sup.1 and R.sup.2 are each independently C.sub.1 -C.sub.4 alkyl or2-methoxyethyl;Y is --(CH.sub.2).sub.2 --, --(CH.sub.2).sub.3 --, --CH.sub.2 CH(CH.sub.3)-- or --CH.sub.2 C(CH.sub.3).sub.2 --;R.sup.3 is hydrogen or an organic substituentare useful in treating or preventing heart conditions or hypertension.

Abstract: 1,4-Dihydropyridine derivatives of the formula: ##STR1## wherein R is aryl or heteroaryl; R.sup.1 and R.sup.2 are each independently C.sub.1 -C.sub.4 alkyl or 2-methoxyethyl; Y is --(CH.sub.2).sub.n --, --CH.sub.2 CH(CH.sub.3)-- or --CH.sub.2 C(CH.sub.3).sub.2 13 ; n is 1 to 3; and X is a 5 or 6 membered nitrogen containing aromatic heterocyclic ring which may optionally be substituted by one or more C.sub.1 -C.sub.4 alkyl, phenyl, benzyl, CN, --N(R.sup.3).sub.2, (CH.sub.2).sub.m CO.sub.2 H, (CH.sub.2).sub.m CO.sub.2 (C.sub.1 -C.sub.4 alkyl) or (CH.sub.2).sub.m CON(R.sup.3).sub.2 group wherein each R.sup.3 is independently H or C.sub.1 -C.sub.4 alkyl and m is 0 or 1; and their pharmaceutically acceptable acid addition salts, and pharmaceutical preparation containing such compounds, have utility as anti-ischaemic and antihypertensive agents.

Abstract: 6,7-Dialkoxy-4-[4-(cyclic-sulfonamidoalkyl)piperidino]quinazolines and method of use as cardiac stimulants.

Abstract: Dihydropyridine anti-ischaemic and antihypertensive agents of the formula: ##STR1## where Y is --(CH.sub.2).sub.2 -- or --(CH.sub.2).sub.3 --;R is aryl or heteroaryl;R.sup.1 and R.sup.2 are each independently C.sub.1 -C.sub.4 alkyl or 2-methoxyethyl;andR.sup.3 and R.sup.4 are each independently C.sub.1 -C.sub.4 alkyl or aryl-(C.sub.1 -C.sub.4 alkyl); or R.sup.3 and R.sup.4 taken together with the nitrogen atom to which they are attached represent a group of the formula: ##STR2## where R.sup.5 is C.sub.1 -C.sub.4 alkyl, aryl, aryl-(C.sub.1 -C.sub.4 alkyl), benzhydryl; 2-methoxyethyl, 2-(N,N-di[C.sub.1 -C.sub.4 alkyl]amino) ethyl, or cyclopropylmethyl;their pharmaceutically acceptable acid addition salts, processes for the preparation of the compounds, and pharmaceutical compositions containing them.

Abstract: 1-(3- or 4-substituted piperidino)phthalazines of the formula ##STR1## wherein R is C.sub.1-6 alkyl; Y is a 3- or 4-position substituent and is --X-(CHR.sup.1).sub.m -Z wherein R.sup.1 is hydrogen or C.sub.1-6 alkyl; m is 1 or 2; X is oxygen or a direct link provided that when m is 1, X is a direct link; and Z is --N(R.sup.2)COR.sup.3, --N(R.sup.2)COOR.sup.3, --N(R.sup.2)SO.sub.2 R.sup.3, --N(R.sup.2)SO.sub.2 NR.sup.4 R.sup.5, --N(R.sup.2)SOR.sup.3, --N(R.sup.2)CONR.sup.4 R.sup.5 or --OCONR.sup.4 R.sup.5, wherein R.sup.2 and R.sup.5 are each independently hydrogen or C.sub.1-6 alkyl; R.sup.3 is C.sub.1-6 alkyl, phenethyl, benzyl, C.sub.3-7 cycloalkyl, phenyl or pyridyl; R.sup.4 is hydrogen or R.sup.3 ; provided that when X is a direct link, R.sup.3 or R.sup.4 is C.sub.3-7 cycloalkyl; the pharmaceutically acceptable acid addition salts thereof; processes for their preparation; and their use as cardiac stimulants and phosphodiesterase inhibitors.

Abstract: 6,7-Dialkoxy-4-[4-(substituted)piperidino]quinazolines wherein the 4-substituent is -(CHR.sup.1).sub.m -Z wherein R.sup.1 is hydrogen or lower alkyl; m is 1 or 2, with the proviso that when m is 2, each R.sup.1 can be the same or different; Z is -N(R.sup.2)COR.sup.3, -OCONR.sup.4 R.sup.5, N(R.sup.2)SO.sub.2 R.sup.3 or -N(R.sup.2)CONR.sup.4 R.sup.5 wherein R.sup.2 is hydrogen or lower alkyl; R.sup.3 is lower alkyl, benzyl or phenyl; and each of R.sup.4 and R.sup.5 is hydrogen or is selected from group R.sup.3 ; and methods for their preparation. The compounds are phosphodiesterase inhibitors and cardiac stimulants.

Abstract: Quaternary 5,6-dihydroimidazo[2,1-b]thiazolium salts and novel quaternary 6,7-dihydro-[5H]thiazolo[3,2-a]pyrimidinium and 5,6,7,8-tetrahydrothiazolo[3,2-a][1,3]diazepinium salts, their preparation and preferred use as acaricidal agents are disclosed.

Abstract: Novel isothiazole carboxamides of 6-(m-aminophenyl)-2,3,5,6-tetrahydroimidazo[2,1-b]thiazole(m-aminotetramis ole) having anthelmintic properties are disclosed.

Abstract: Novel isoxazole carboxamides of 6-(m-aminophenyl)-2,3,5,6-tetrahydroimidazo[2,1-b,]thiazole(m-aminotetrami sole) having anthelmintic properties are disclosed.

Abstract: Quaternary 5,6-dihydroimidazo[2,1-b]thiazolium salts and novel quaternary 6,7-dihydro-[5H]thiazolo[3,2-a]pyrimidinium and 5,6,7,8-tetrahydrothiazolo[3,2-a][1,3]diazepinium salts, their preparation and preferred use as acaricidal agents are disclosed.

Abstract: 7-Substituted imidazo[2,1-b]thiazolium and 9-substitutedthiazolo[3,2-a]benzimidazolium salts as blood-sugar lowering agents and growth promotants.

Abstract: Quaternary 5,6-dihydroimidazo[2,1-b]thiazolium salts and novel quaternary 6,7-dihydro-[5H]thiazolo[3,2-a]pyrimidinium and 5,6,7,8-tetrahydrothiazolo[3,2-a][1,3]diazepinium salts, their preparation and preferred use as acaricidal agents are disclosed.

Abstract: 7-Substituted imidazo[2,1-b]thiazolium and 9-substitutedthiazolo[3,2-a]benzimidazolium salts as blood-sugar lowering agents and growth promotants.

Abstract: 7-Substituted imidazo[2,1-b]thiazolium and 9-substituted thiazolo-[3,2-a]benzimidazolium salts as blood-sugar lowering agents and growth promotants.