Abstract: The present invention comprises compounds of the formula ##STR1## and the biologically acceptable acid addition salts thereof, wherein R.sub.1 represents hydrogen or lower alkyl having 1 to 4 carbon atoms; R.sub.2 represents an alkylene having 2 to 4 carbon atoms; R.sub.3 represents amino or guanidino; R.sub.4 represents nitrophenyl, methylnitrophenyl, dinitropheyl, naphthyl, or nitronaphtyl; m is 2 or 3; and n is 3 or 4. The compounds of the present invention are analytical reagents useful for measuring proteolytic enzymes such as thrombin and trypsin. The enzymatic hydrolysis of the invention compounds provides a chromogenic amine by which the proteolytic enzyme concentration can be determined spectrophotometrically.

Abstract: The present invention comprises compounds of the formula ##STR1## and the biologically acceptable acid addition salts thereof wherein R.sub.1 represents hydrogen, or lower alkyl having 1-4 carbon atoms; R.sub.2 represents p-hydroxybenzyl or benzyl; R.sub.3 represents an alkyl having 1-6 carbon atoms; R.sub.4 represents amino or guanidino; R.sub.5 represents p-nitrophenyl, methylnitrophenyl, dinitrophenyl, naphthyl, or nitronaphthyl; and n is 3 or 4.

Abstract: Novel 2,3,6-substituted-4-pyrones having activity as prostaglandin antagonists are disclosed, together with intermediates useful for the preparation thereof. Methods of using the compounds of this invention as prostaglandin antagonists are described.

Abstract: 11-Desoxy-15-thia-16-aryl-.omega.-tetranor prostanoid compounds having a carboxyl, tetrazole, or substituted imide at C.sub.1, having prostaglandin-like anti-ulcer activity and their synthesis from the 11-desoxy "Corey Lactone".

Abstract: The present invention encompasses acid addition salts of a compound of the formula ##STR1## wherein: R.sub.1 represents phenylsulfonyl, benzoyl, carbobenzoxy, and the halo, loweralkyl having 1-4 carbon atoms, loweralkoxy having 1-3 carbon atoms, phenyl, or hydroxy substituted derivatives thereof; or alkanoyl having 2-12 carbon atoms; R.sub.2 represents alkyl having 1-10 carbon atoms, alkoxyalkyl having 2-6 carbon atoms, cycloalkyl having 5-7 carbon atoms, benzyl and the halo, loweralkyl having 1-4 carbon atoms, loweralkoxy having 1-3 carbon atoms, carboxy, hydroxy, or substituted derivatives thereof; R.sub.3 represents hydrogen or guanyl, and m is 3 or 4.Compounds of the present invention are useful as analytical reagents. Enzymatic hydrolysis provides --S--R.sub.2 which can be further reacted with 5,5'-dithiobis (2-nitrobenzoic acid) to provide a colored product by which the enzyme concentration can be determined spectrophotometrically.

Abstract: The present invention encompasses the acid addition salts of a compound of the formula ##STR1## wherein R.sub.1 represents phenylsulfonyl, benzoyl, carbobenzoxy, and the halo, loweralkyl having 1-4 carbon atoms, loweralkoxy having 1-3 carbon atoms, phenyl, or hydroxy substituted derivatives thereof; or alkanoyl having 2-12 carbon atoms; and R.sub.2 represents alkyl having 1-10 carbon atoms, or alkoxyalkyl having 2-6 carbon atoms, cycloalkyl having 5-7 carbon atoms, or benzyl and the halo, loweralkyl having 1-4 carbon atoms, loweralkoxy having 1-3 carbon atoms, hydroxy, carboxy, or phenyl substituted derivatives thereof.Compounds of the present invention are useful as analytical reagents. Enzymatic hydrolysis provides --S--R.sub.2 which can be further reacted with 5,5'-dithiobis (2-nitrobenzoic acid) to provide a colored product by which the enzyme concentration can be determined spectrophotometrically.

Abstract: 11-Desoxy-15-thia-16-aryl-.omega.-tetranor prostanoid compounds having a carboxyl, tetrazole, or substituted imide at C.sub.1, having prostaglandin-like anti-ulcer activity and their synthesis from the 11-desoxy "Corey Lactone".

Abstract: Novel 2,3,6-substituted-4-pyrones having activity as prostaglandin antagonists are disclosed, together with intermediates useful for the preparation thereof. Methods of using the compounds of this invention as prostaglandin antagonists are described.

Abstract: 11-Desoxy-15-thia-16-aryl-.omega.-tetranor prostanoid compounds having a carboxyl, tetrazole, or substituted imide at C.sub.1, having prostaglandin-like anti-ulcer activity and their synthesis from the 11-desoxy "Corey Lactone".

Abstract: 11-Desoxy-15-thia-16-aryl-.omega.-tetranor prostanoid compounds having a carboxyl, tetrazole, or substituted imide at C.sub.1, having prostaglandin-like anti-ulcer activity and their synthesis from the 11-desoxy "Corey Lactone".

Abstract: Racemic 3-aminomethylene-6,7-dimethoxy-2-methyl-4-oxo-1,2,3,4-tetrahydro-1-quinoli ne carboxylic acid, alkyl, phenyl and benzyl esters as analgesic agents, synthesized from 3-hydroxymethylene-6,7-dimethoxy-2-methyl-4-oxo-1,2,3,4-tetrahydro-1-quino line carboxylic acid, alkyl, phenyl and benzyl esters and the dextrorotatory enantiomer 3-aminomethylene-6,7-dimethoxy-2-methyl-4-oxo-1,2,3,4-tetrahydro-1-quinoli ne carboxylic acid, ethyl ester, an outstanding analgesic agent.

Abstract: 2-Substituted-5-aryl-1,2,3,4-tetrahydro-.gamma.-carbolines, their use as tranquilizing agents and the preparation thereof from 5-aryl-1,2,3,4-tetrahydro-.gamma.-carbolines.

Abstract: Racemic 3-aminomethylene-6,7-dimethoxy-2-methyl-4-oxo-1,2,3,4-tetrahydro-1-quinoli ne carboxylic acid, alkyl, phenyl and benzyl esters as analgesic agents, synthesized from 3-hydroxymethylene-6,7-dimethoxy-2-methyl-4-oxo-1,2,3,4-tetrahydro-1-quino line carboxylic acid, alkyl, phenyl and benzyl esters and the dextrorotatory enantiomer 3-aminomethylene-6,7-dimethoxy-2-methyl-4-oxo-1,2,3,4-tetrahydro-1-quinoli ne carboxylic acid, ethyl ester, an outstanding analgesic agent.