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ID: ALA1135123
Journal: Bioorg Med Chem Lett
Title: Discovery of L-791,943: a potent, selective, non emetic and orally active phosphodiesterase-4 inhibitor.
Authors: Guay D, Hamel P, Blouin M, Brideau C, Chan CC, Chauret N, Ducharme Y, Huang Z, Girard M, Jones TR, Laliberté F, Masson P, McAuliffe M, Piechuta H, Silva J, Young RN, Girard Y.
Abstract: Structure-activity relationship studies directed toward improving the potency and metabolic stability of CDP-840 (3) resulted in the discovery of L-791,943 (11n) as a potent (HWB TNF-alpha = 0.67 microM) and orally active phosphodiesterase type 4 (PDE4) inhibitor. This compound, which bears a stable bis-difluoromethoxy catechol and a pendant hexafluorocarbinol, exhibited a long half-life in rat and in squirrel monkey. It is well tolerated in ferret with an emetic threshold greater than 30 mg/kg (po) and was found to be active in the ovalbumin-induced bronchoconstriction model in guinea pig and in the ascaris-induced bronchoconstriction models in sheep and squirrel monkey.
CiteXplore: 12031319