Tatsuya Oyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: An object of the present invention is to provide an antipruritic agent having a novel action mechanism. The present invention provides an antipruritic agent comprising a compound represented by the following general formula (1): wherein R1 represents a hydrogen atom or alkyl; the ring Q represents a cyclohexylene group or a phenylene group; A1 and A2 represent a single bond or an alkylene group; E represents —NHCO—; A3 represents a single bond or a divalent saturated or unsaturated aliphatic hydrocarbon group; R3 represents a non-cyclic aliphatic hydrocarbon group; and R4 and R5 are the same or different and each represents a hydrogen atom or alkyl, or a pharmaceutically acceptable salt thereof as an active ingredient.
Abstract: The present invention relates to an antipruritic agent comprising a nociceptin antagonist as an active ingredient. The nociceptin antagonist can be used as a preventive or remedy for diseases associated with itching (for example, atopic dermatitis and urticaria), local pruritus cutaneous caused by insect excretion and secretion, nodular prurigo, kidney dialysis, diabetes, blood disease, liver disease, kidney disease, incretion and metabolic disorder, viscera malignant tumor, hyperthyroidism, autoimmune disease, multiple sclerosis, neurologic disease, psychoneurosis, allergic conjunctivitis, spring catarrh, atopic keratoconjunctivitis, or itching caused by excess use of laxuries and drugs because it has excellent scrtaching behavior suppressing effect, that is, antiitching effect and antipruritic effect.