Abstract: Disclosed are compounds, compositions and methods for inhibiting interleukin-1&bgr; protease activity, the compounds having the formula (I).

Abstract: Disclosed are compounds, compositions, and methods for inhibiting interleukin-1&bgr; protease activity, wherein the compounds are &agr;-substituted methyl ketones having formula (I) as set forth herein. These compounds are inhibitors of IL-1&bgr; converting enzyme and as such are useful as therapeutic agents for certain infectious diseases.

Abstract: Disclosed are compounds, compositions and methods for inhi.beta.iting interleukin-1.beta. protease activity, the compounds .alpha.-substituted methyl ketones having the formula (I) set forth herein. These compounds are inhibitors of IL-1.beta. converting enzyme and as such are useful as therapeutic agents for certain infectious diseases.

Abstract: A compound of the formula ##STR1## wherein: Z is aryl, substituted aryl, phenyl-lower-alkyl, hetero-aryl, substituted heteroaryl, heterocycloalkyl, heterocyclocalkyl-lower-alkyl, hetero-aryl-lower-alkyl wherein one or more hydrogens of aryl and heteroaryl is optionally replaced by A and B;Y is lower cycloalkyl, aryl, phenyl-lower-alkyl, hetero-aryl, heterocycloalkyl, heterocyclocalkyl-lower-alkyl, hetero-aryl-lower-alkyl wherein one or more hydrogens of aryl and heteroaryl is optionally replaced by A and B;X is CONH.sub.2, CONHOH, tetrazole, SO.sub.2 N(R).sub.2, PO(OH).sub.2, CON(R).sub.2, or CONR--CHR--CO--A or CONR--(CHR).sub.n --A;A and B is independently H, OH, OR, halo, CF.sub.3, lower alkyl, N(R).sub.2, CON(R).sub.2, SR, NHSO.sub.2 R, hydroxy-lower-alkyl, NHCOR, NRSO.sub.2 CF.sub.3, OSO.sub.2 CF.sub.3, or CN;R is H, lower-alkyl, phenyl-lower-alkyl, hydroxy-lower-alkyl, CO-lower-alkyl, or CO--(CH.sub.2).sub.n --aryl; andn is 1, 2, or 3, and a pharmaceutically acceptable salt thereof.

Abstract: This invention relates to methods of x-ray diagnostic imaging the blood pool and/or lymph system of a mammal comprising administering a contrast effective amount of a particulate iodinated aroyloxy ester contrast agent having the structure: ##STR1## wherein n is an integer from 3 to 20; R.sup.1 is H, alkyl, fluoroalkyl, cycloalkyl, aryl, aralkyl, alkoxyalkyl or acetamidoalkyl;R.sup.2, R.sup.3 and R.sup.4 are independently H, alkyl, fluoroalkyl, alkoxy, aryloxy, halogen, hydroxy, acylamino, acetamidoalkyl, --COO-alkyl, --COO-aryl, --COO-aralkyl, cyano, sulfonyl, carboxamido or sulfonamido;R.sup.5 is H, alkyl, fluoroalkyl, halogen, hydroxy, acylamino, acetamidoalkyl, cyano, sulfonyl, carboxamido or sulfonamido;R.sup.6 and R.sup.7 are independently alkyl, cycloalkyl, aryl or aralkyl; andR.sup.8 and R.sup.9 are independently H or --COR.sup.6.

Abstract: This invention relates to methods of x-ray diagnostic imaging the blood pool, liver, spleen and/or lymph system of a mammal comprising administering a contrast effective amount of a contrast agent having the structure: ##STR1## wherein: R is alkyl having from 1 to 20 carbon atoms, aryl having from 6 to 11 carbon atoms, or R.sup.1 CO.sub.2 R.sup.2 andR.sup.1 and R.sup.2 are independently alkyl containing from 1 to 20 carbon atoms.This invention further relates to novel contrast agents having the above structure wherein both Rs are alkyl to x-ray contrast compositions comprising such agents, and to method of x-ray diagnostic imaging utilizing such agents.

Abstract: This invention relates to methods of x-ray diagnostic imaging the blood pool, liver, spleen and/or lymph system of a mammal comprising administering a contrast effective amount of a succinic acid derivative disubstituted with benzoic acid residue as a contrast agent having the structure: ##STR1## R.sup.1 and R.sup.2 are alkyl of from 2 to 18 carbon atoms; A.sub.r is ##STR2## R.sup.3 is selected from the group consisting of NCH.sub.2, NHAc, and ##STR3## wherein R is an alkyl of 1 to 10 carbon atoms;R.sup.6 is H, alkyl of from 1 to 4 carbon atoms;R.sup.4 is selected from the group consisting of ##STR4## NHC--COH and CONHCH.sub.3, having 1 to 10 carbon atoms.R.sup.5 is alkyl having 1 to 18 carbon atoms and A.sub.c is acyl.This invention further relates to novel contrast agents having the above structure wherein R.sup.1 and R.sup.2 are C.sub.2 H.sub.5, to x-ray contrast compositions comprising such agents, and to method of x-ray diagnostic imaging utilizing such agents.