Patents by Inventor Mitsutaka KITANO

Mitsutaka KITANO 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).

  • Medicament for treating influenza characterized by combining a Cap-dependent endonuclease inhibitor and an anti-influenza drug
    Patent number: 11040048
    Abstract: A medicament characterized in that (A) a compound represented by the formula (I): its pharmaceutically acceptable salt, or a solvate thereof, wherein P is hydrogen or a group to form a prodrug; A1 is CR1AR1B, S or O; A2 is CR2AR2B, S or O; A3 is CR3AR3B, S or O; A4 is each independently CR4AR4B, S or O; the number of hetero atoms among atoms constituting the ring which consists of A1, A2, A3, A4, nitrogen atom adjacent to A1 and carbon atom adjacent to A4 is 1 or 2; R1A and R1B are each independently hydrogen, halogen, alkyl or the like; R2A and R2B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B are each independently hydrogen, halogen, alkyl, or the like; R4A are each independently hydrogen, halogen, alkyl, or the like; R4B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B may be taken together with an adjacent carbon atom to form non-aromatic carbocycle or non-aromatic heterocycle; n is any integer of 1 to 2; and R1 is or the like, is combined
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: June 22, 2021
    Assignee: SHIONOGI & CO., LTD.
    Inventors: Takao Shishido, Takeshi Noshi, Atsuko Yamamoto, Mitsutaka Kitano
  • A MEDICAMENT FOR TREATING INFLUENZA CHARACTERIZED BY COMBINING A CAP-DEPENDENT ENDONUCLEASE INHIBITOR AND AN ANTI-INFLUENZA DRUG
    Publication number: 20200261481
    Abstract: A medicament characterized in that (A) a compound represented by the formula (I): its pharmaceutically acceptable salt, or a solvate thereof, wherein P is hydrogen or a group to form a prodrug; A1 is CR1AR1B, S or O; A2 is CR2AR2B, S or O; A3 is CR3AR3B, S or O; A4 is each independently CR4AR4B, S or O; the number of hetero atoms among atoms constituting the ring which consists of A1, A2, A3, A4, nitrogen atom adjacent to A1 and carbon atom adjacent to A4 is 1 or 2; R1A and R1B are each independently hydrogen, halogen, alkyl or the like; R2A and R2B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B are each independently hydrogen, halogen, alkyl, or the like; R4A are each independently hydrogen, halogen, alkyl, or the like; R4B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B may be taken together with an adjacent carbon atom to form non-aromatic carbocycle or non-aromatic heterocycle; n is any integer of 1 to 2; and R1 is or the like,
    Type: Application
    Filed: December 14, 2016
    Publication date: August 20, 2020
    Applicant: Shionogi & Co., Ltd.
    Inventors: Takao SHISHIDO, Takeshi NOSHI, Atsuko YAMAMOTO, Mitsutaka KITANO