Abstract: This invention relates to a series of substituted piperazines of Formula II, as well as enantiomers thereof These compounds are useful in the manufacture of pharmaceutical compositions.

Abstract: Disclosed are compounds, compositions and methods for inhibiting interleukin-1&bgr; (IL-&bgr;) protease activity. The compounds, N-(pyrimidinyl)-aspartic acid &agr;-substituted methyl ketones and aspartic acid aldehydes, have the formula (I) set out herein.

Abstract: This invention relates a to a series of heterocyclic substituted piperazines of Formula I methods of treatment, pharmaceutical compositions containing them, and intermediates used in their manufacture. The compounds of the invention selectively inhibit binding to the &agr;-1a adrenergic receptor, a receptor which has been implicated in benign prostatic hyperplasia. As such the compounds are potentially useful in the treatment of this disease.

Abstract: Disclosed are compounds, compositions and methods for inhibiting interleukin-1.beta. (IL-.beta.) protease activity. The compounds, N-(pyrimidinyl)-aspartic acid .alpha.-substituted methyl ketones and aspartic acid aldehydes, have the formula (I) set out herein. These compounds are inhibitors of 1.beta.-converting enzyme and as such are useful whenever such inhibition is desired. For example, they may be used as research tools in pharmacological, diagnostic and related studies and in the treatment of diseases in mammals in which 1L-.beta. protease activity is implicated.

Abstract: This invention relates to a series of heterocyclic substituted piperazines of Formula I ##STR1## pharmaceutical compositions containing them and intermediates used in their manufacture. The compounds of the invention selectively inhibit binding to the (.alpha.-1.sub.a adrenergic receptor, a receptor which has been implicated in benign prostatic hyperplasia. As such the compounds are potentially useful in the treatment of this disease.

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: Disclosed are compounds, compositions and methods for inhibiting interleukin-1.beta. (1L-.beta.) protease activity. The compounds, N-(pyrimidinyl)-aspartic acid .alpha.-substituted methyl ketones and aspartic acid aldehydes, have the formula (I) set out herein.These compounds are inhibitors of 1.beta.-converting enzyme and as such are useful whenever such inhibition is desired. For example, they may be used as research tools in pharmacological, diagnostic and related studies and in the treatment of diseases in mammals in which IL-.beta. protease activity is implicated.

Abstract: Disclosed are compounds of the formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein R.sub.1 is (CR.sub.5 R.sub.6).sub.n, (CR.sub.5 R.sub.6).sub.n,-aryl, (CR.sub.5 R.sub.6).sub.n -heteroaryl, X-(CR.sub.5 R.sub.6).sub.n, X-(CR.sub.5 R.sub.6).sub.n -aryl or X-(CR.sub.5 R.sub.6).sub.n -heteroaryl wherein aryl and heteroaryl may be optionally substituted;X is 0 or NR.sub.5 ;R.sub.5 and R.sub.6 are independently H or lower alkyl;R.sub.2 is H, halo, lower alkyl or (CR.sub.5 R.sub.6).sub.n -aryl;R.sub.3 and R.sub.4 are independently H or alkyl;A is a D or L isomer of an amino acid selected from the group consisting of alanine, valine, leucine, isoleucine, proline, phenylalanine, glycine, tyrosine, methionine, asparagine, glutamine, aspartic acid, glutamic acid, lysine, arginine, histidine and .beta.-thienylalanine;Z is CH.sub.2 or O; andn is 0-4;pharmaceutical compositions containing the compounds; and a method for inhibiting interleukin-1.beta.

Abstract: Disclosed are compounds of the formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein R.sub.1 is (CR.sub.5 R.sub.6).sub.n, (CR.sub.5 R.sub.6).sub.n -aryl, (CR.sub.5 R.sub.6).sub.n -heteroaryl, X-(CR.sub.5 R.sub.6).sub.n, X-(CR.sub.5 R.sub.6).sub.n -aryl or X-(CR.sub.5 R.sub.6).sub.n -heteroaryl wherein aryl and heteroaryl may be optionally substituted;X is O or NR.sub.5 ;R.sub.5 and R.sub.6 are independently H or lower alkyl;R.sub.2 is H, halo, lower alkyl or (CR.sub.5 R.sub.6).sub.n -aryl;R.sub.3 and R.sub.4 are independently H or alkyl;A is a D or L isomer of an amino acid selected from the group consisting of alanine, valine, leucine, isoleucine, proline, phenylalanine, glycine, tyrosine, methionine, asparagine, glutamine, aspattic acid, glutamic acid, lysine, arginine, histidine and .beta.-thienylalanine;Z is CH.sub.2 or O; andn is 0-4;pharmaceutical compositions containing the compounds; and a method for inhibiting interleukin-1.beta.