Abstract: The invention provides novel substituted pyridopyrimidines represented by Formula I or a pharmaceutically acceptable salt, solvate, polymorph, ester, tautomer or prodrug thereof, and a composition comprising these compounds. The compounds provided can be used as inhibitors of the phosphoinositide 3? OH kinase family (PI3K) for the treatment of inflammatory diseases, cancer, cardiovascular diseases, allergy, asthma and autoimmune disorders.

Abstract: The invention provides novel substituted pyridopyrimidines represented by Formula I or a pharmaceutically acceptable salt, solvate, polymorph, ester, tautomer or prodrug thereof, and a composition comprising these compounds. The compounds provided can be used as inhibitors of the phosphoinositide 3? OH kinase family (PI3K) for the treatment of inflammatory diseases, cancer, cardiovascular diseases, allergy, asthma and autoimmune disorders.

Abstract: The invention provides novel substituted pyridopyrimidines represented by Formula I or a pharmaceutically acceptable salt, solvate, polymorph, ester, tautomer or prodrug thereof, and a composition comprising these compounds. The compounds provided can be used as inhibitors of the phosphoinositide 3? OH kinase family (PI3K) for the treatment of inflammatory diseases, cancer, cardiovascular diseases, allergy, asthma and autoimmune disorders.

Abstract: Provided are methods of inhibiting the activity of a serine protease using protease inhibitors that include an alpha-keto heterocycle in their structure. The methods are useful in the treatment of ischemic heart or treatment of symptoms associated with blood coagulation disorders. Also provided are methods for detecting or quantifying the activity of a serine protease in a pure sample.

Abstract: The present invention relates to certain compounds comprising substituted oxadiazole, thiadiazole and triazole structures which are useful as inhibitors of serine proteases, including human neutrophil elastase (HNE). Compounds described herein are characterized by their relatively low molecular weight, high potency and selectivity with respect to HNE, and can be used to effectively prevent, alleviate or otherwise treat disease states characterized by the degradation of connective tissue by proteases in humans.

Abstract: The present invention relates to certain substituted oxadiazole nonpeptides, which are useful as inhibitors of human neutrophil elastase (HNE) for the treatment of HNE-mediated processes implicated in conditions such as adult respiratory distress syndrome, septic shock and multiple organ failure. A series of studies also have indicated the involvement HNE in myocardial ischemia-reperfusion injury, emphysema. HNE-mediated processes are implicated in other conditions such as arthritis, periodontal disease, glomerulonephritis, dermatitis, psoriasis, cystic fibrosis, chronic bronchitis, atherosclerosis, Alzheimer's disease, organ transplantation, corneal ulcers, and invasion behavior of malignant tumors.

Abstract: The present invention relates to cysteine protease inhibitors of the general formula (I): ##STR1## wherein Z is a cysteine protease binding moiety; X and Y are S, O or optionally substituted N; and R.sub.1 is optionally substituted alkyl or aryl.

Abstract: The present invention relates to certain substituted oxadiazole nonpeptides, which are useful as inhibitors of human neutrophil elastase (HNE) for the treatment of HNE-mediated processes implicated in conditions such as adult respiratory distress syndrome, septic shock and multiple organ failure. A series of studies also have indicated the involvement HNE in myocardial ischemia-reperfusion injury, emphysema. HNE-mediated processes are implicated in other conditions such as arthritis, periodontal disease, glomerulonephritis, dermatitis, psoriasis, cystic fibrosis, chronic bronchitis, atherosclerosis, Alzheimer's disease, organ transplantation, corneal ulcers, and invasion behavior of malignant tumors.

Abstract: The present invention relates to certain substituted oxadiazole tripeptides, which are useful as inhibitors of human neutrophil elastase (HNE) for the treatment of HNE-mediated processes implicated in conditions such as adult respiratory distress syndrome, septic shock and multiple organ failure. A series of studies also have indicated the involvement HNE in myocardial ischemia-reperfusion injury, emphysema. HNE-mediated processes are implicated in other conditions such as arthritis, periodontal disease, glomerulonephritis, dermatitis, psoriasis, cystic fibrosis, chronic bronchitis, atherosclerosis, Alzheimer's disease, organ transplantation, corneal ulcers, and invasion behavior of malignant tumors.