Abstract: Novel antagonists of endothelin are described, as well as methods for the preparation and pharmaceutical compositions of the same, which are useful in treating elevated levels of endothelin, acute and chronic renal failure, hypertension, myocardial infarction, metabolic, endocrinological, neurological disorders, congestive heart failure, endotoxic shock, subarachnoid hemorrhage, arrhythmias, asthma, preeclampsia, Raynaud's disease, percutaneous transluminal coronary angioplasty or restenosis, angina, cancer, pulmonary hypertension, ischemic disease, gastric mucosal damage, ischemic bowel disease, and diabetes.

Abstract: Novel quinazoline inhibitors of endothelin converting enzyme are described, as well as methods for the preparation and pharmaceutical compositions of the same, which are useful in treating elevated levels of endothelin and in controlling hypertension, myocardial infarction and ischemia, metabolic, endocrinological, and neurological disorders, congestive heart failure, endotoxic and hemorrhagic shock, septic shock, subarachnoid hemorrhage, arrhythmias, asthma, acute and chronic renal failure, cyclosporin-A induced nephrotoxicity, angina, gastric mucosal damage, ischemic bowel disease, cancer, pulmonary hypertension, preeclampsia, atherosclerotic disorders including Raynaud's disease and restenosis, cerebral ischemia and vasospasm, and diabetes.

Abstract: 6-Aryl pyrido?2,3-d!pyrimidine 7-imines, 7-ones, and 7-thiones are inhibitors of protein tyrosine kinases, and are thus useful in treating cellular proliferation mediated thereby. The compounds are especially useful in treating cancer, atherosclerosis, restenosis, and psoriasis.

Abstract: 6-Aryl pyrido?2,3-d!pyrimidines and naphthyridines are inhibitors of protein tyrosine kinase, and are thus useful in treating cellular proliferation mediated thereby. The compounds are especially useful in treating atherosclerosis, restenosis, psoriasis, as well as bacterial infections.

Abstract: Novel nonpeptide antagonists of endothelin I are described, as well as methods for the preparation and pharmaceutical compositions of the same, which are useful in treating elevated levels of endothelin, acute and chronic renal failure, hypertension, myocardial infarction, myocardial ischemia, cerebral vasospasm, cerebral ischemia, cerebral infarction, cirrhosis, septic shock, congestive heart failure, endotoxic shock, subarachnoid hemorrhage, arrhythmias, asthma, preeclampsia, atherosclerotic disorders including Raynaud's disease and restenosis, angina, cancer, pulmonary hypertension, ischemic disease, gastric mucosal damage, hemorrhagic shock, ischemic bowel disease, stroke, benign prosthatic hyperplasia (BPH), and diabetes.

Abstract: Hydroxamate compounds of the following formula are disclosed:R--AA.sup.3 --AA.sup.4 --AA.sup.5 --AA.sup.6 --NH--OR.sup.2wherein AA.sup.3 --AA.sup.6 represent amino acid residues. The disclosed compounds are inhibitors of endothelin converting enzyme, and as such are useful for the treatment of disorders resulting from overproduction of endothelin, i.e., acute and chronic renal failure, cyclosporin-A induced nephrotoxicity, hypertension, myocardial infarction, metabolic, endocrinological, neurological disorders, congestire heart failure, endotoxic shock and hemorrhagic shock, septic shock, subarachnoid hemorrhage, arrhythmias, asthma, preeclampsia, atherosclerotic disorders including Raynaud's disease, cerebral vasospasm, restenosis, angina, cancer, pulmonary hypertension, ischemic disease, gastric mucosal damage, ischemic bowel disease, and diabetes.

Abstract: Novel antagonists of endothelin are described, as well as novel intermediates used in their preparation, methods for the preparation and pharmaceutical compositions of the same, which are useful in treating elevated levels of endothelin, essential, renovascular, malignant and pulmonary hypertension, cerebral infarction, myocardial ischemia, cerebral ischemia, congestire heart failure and subarachnoid hemorrhage.

Abstract: Novel quinazoline inhibitors of endothelin converting enzyme are described, as well as methods for the preparation and pharmaceutical compositions of the same, which are useful in treating elevated levels of endothelin and in controlling hypertension, myocardial infarction and ischemia, metabolic, endocrinological, and neurological disorders, congestive heart failure, endotoxic and hemorrhagic shock, septic shock, subarachnoid hemorrhage, arrhythmias, asthma, acute and chronic renal failure, cyclosporin-A induced nephrotoxicity, angina, gastric mucosal damage, ischemic bowel disease, cancer, pulmonary hypertension, preeclampsia, atherosclerotic disorders including Raynaud's disease and restenosis, cerebral ischemia and vasospasm, and diabetes.

Abstract: Novel antagonists of endothelin are described, as well as methods for the preparation and pharmaceutical compositions of the same, which are useful in treating elevated levels of endothelin, acute and chronic renal failure, hypertension, myocardial infarction, metabolic, endocrinological, neurological disorders, congestive heart failure, endotoxic shock, subarachnoid hemorrhage, arrhythmias, asthma, preeclampsia, Raynaud's disease, percutaneous transluminal coronary angioplasty or restenosis, angina, cancer, pulmonary hypertension, ischemic disease, gastric mucosal damage, ischemic bowel disease, and diabetes.