Abstract: A compound of the formula wherein R1 and R2 are as defined above, useful in the treatment and condition selected from the group consisting of meningitis and salpingitis, septic shock, disseminated intravascular coagulation, and/or adult respiratory distress syndrome, acute or chronic inflammation, arthritis, cholangitis, colitis, encephalitis, endocarditis, glomerulonephritis, hepatitis, myocarditis, pancreatitis, pericarditis, reperfusion injury, vasculitis, acute and delayed hypersensitivity, graft rejection, and graft-versus-host disease, auto-immune diseases including Type 1 diabetes mellitus and multiple sclerosis, periodonate diseases, interstitial pulmonary fibrosis, cirrhosis, systemic sclerosis, keloid formation, tumors which produce IL-1 as an autocrine growth factor, cachexia, Alzheimers disease, percussion injury, depression, atherosclerosis, osteoporosis in a mammal, including a human.

Abstract: A compound of formula (I) ##STR1## wherein R.sup.1 and R.sup.2 are as defined in the description, R.sup.2 being an aromatic group, useful in the treatment and condition selected from the group consisting of the group meningitis and salpingitis, septic shock, disseminated intravascular coagulation, and/or adult respiratory distress syndrome, acute or chronic inflammation, arthritis, cholangitis, colitis, encephalitis, endocarditis, glomerulonephritis, hepatitis, myocarditis, pancreatitis, pericarditis, reperfusion injury, vasculitis, acute and delayed hypersensitivity, graft rejection, and graft-versus-host disease, auto-immune diseases including Type 1 diabetes mellitus and multiple sclerosis, periodonate diseases, interstitial pulmonary fibrosis, cirrhosis, systemic sclerosis, keloid formation tumors which produce IL-1 as an autocrine growth factor, cachexia, Alzeimer's disease, percussion injury, depression, atherosclerosis, osteoporosis in a mammal, including human.

Abstract: This invention relates to 4-substituted catechol diether compounds which are selective inhibitors of phosphodiesterase (PDE) type IV. The compounds of the present invention are useful in inhibiting PDE.sub.IV and in the treatment of AIDS, asthma, bronchitis, chronic obstructive airways disease, psoriasis, allergic rhinitis, dermatitis and other inflammatory diseases. This invention also relates to pharmaceutical compositions comprising the compounds hereof.

Abstract: This invention relates to new heterocyclic compounds which are selective inhibitors of 5-lipoxygenase (5-LO). The new heterocyclic compounds are useful in inhibiting 5-LO per se and in the treatment or alleviation of inflammatory disease or condition, allergy or cardiovascular diseases in mammals wherein the inflammatory disease or condition includes but is not limited to asthma, arthritis, bronchi chronic obstructive pulmonary disease, psoriasis, allergic rhinitis, dermatitis, shock, atopic dermatitis, rheumatoid arthritis or osteoa This invention also relates to pharmaceutical compositions useful therefor.