Patents Assigned to Eisai Co., Ltd.
  • Publication number: 20060058370
    Abstract: In the present invention, the methods of producing a fluorinated cyclic benzamidine derivative (A), or a salt thereof, comprise the step of reacting a specific novel compound with ammonia or imide. The methods of this invention for producing a morpholine-substituted phenacyl derivative (B), or a salt thereof, comprise reaction of a specific novel compound with morpholine, reaction of the product with a halogenating reagent, and deketalization of the product. The methods of this invention for a producing cyclic benzamidine derivative (C), or a salt thereof, comprise the step of coupling compound (A), or a salt thereof, with compound (B), or a salt thereof, in the presence of an ether or a hydrocarbon.
    Type: Application
    Filed: August 18, 2005
    Publication date: March 16, 2006
    Applicant: Eisai Co., Ltd.
    Inventors: Naoyuki Shimomura, Manabu Sasho, Akio Kayano, Kazuhiro Yoshizawa, Masahiko Tsujii, Hiroshi Kuroda, Ken Furukawa
  • Publication number: 20060048367
    Abstract: A filter filling apparatus serving as a system for manufacturing a tip device according to the present invention comprises, for example, on a base inside a casing, a sheet holder with a sheet-like filter carried thereon and a tip rack where a plurality of tips are held in a matrix-like configuration. Furthermore, a small-diameter filter punching-discharging mechanism having a plurality of small-diameter pipes disposed in a row and movable in the vertical direction and a filter push-in mechanism having a plurality of small-diameter rods disposed in a row and movable in the vertical direction are provided above the sheet holder and the tip rack. A cylinder connected to a nitrogen gas supply unit is connected via piping to the small-diameter pipes.
    Type: Application
    Filed: August 26, 2005
    Publication date: March 9, 2006
    Applicants: Eisai Co., Ltd., Nikkyo Technos Co., Ltd.
    Inventors: Yasushi Ishihama, Takashi Usui
  • Patent number: 6995144
    Abstract: The present invention provides compounds represented by the following formula: wherein X1, X2, X3 and X4 each independently represents a single bond, C1-6 alkylene, etc.; A2 represents optionally substituted phenyl, etc.; A1 represents an optionally substituted 5- to 7-membered heterocyclic group containing —C(?Q1)—, Q1 wherein represents oxygen, sulfur or ?N—R11, wherein R11 represents hydrogen or C1-6 alkyl etc.; and Z1 represents piperidin-diyl, ect, salts thereof and hydrates of the foregoing.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: February 7, 2006
    Assignee: Eisai Co., Ltd.
    Inventors: Fumihiro Ozaki, Mutsuko Ono, Koki Kawano, Yoshihiko Norimine, Tatsuhiro Onogi, Takashi Yoshinaga, Kiyoaki Kobayashi, Hiroyuki Suzuki, Hiroe Minami, Kohei Sawada
  • Patent number: 6995163
    Abstract: The present invention provides a novel compound having an excellent corticotrophin-releasing-factor receptor antagonistic activity. That is, it provides a compound represented by the following formula, a pharmacologically acceptable salt thereof or hydrates thereof, wherein R2 is a hydrogen atom, etc.; R3 is a hydrogen atom, etc.; M? represents a hydrogen atom, a halogen atom or a C1-6 alkyl group; R7? represents a hydrogen atom or a C1-6 alkyl group; and W? represents a phenyl group, pyridyl group, thienyl group, or furyl group, each being optionally substituted; and a pharmacologically acceptable salt thereof or hydrates thereof.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: February 7, 2006
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeki Hibi, Yorihisa Hoshino, Tatsuya Yoshiuchi, Kogyoku Shin, Kouichi Kikuchi, Motohiro Soejima, Mutsuko Tabata, Yoshinori Takahashi, Hisashi Shibata, Takayuki Hida, Tetsuya Hirakawa, Mitsuhiro Ino
  • Publication number: 20060024238
    Abstract: The invention provides methods for treating and preventing gastrointestinal disorders, viral infections, fungal infections, Whipple's disease, sleep disorders, sleep apnea, iron deficiency anemia, asthma, nasal airway resistance, cystic fibrosis, pancreatitis, chemotherapy-induced emesis, radiation-induced injury to the gastrointestinal tract, epilepsy, middle ear infections, obesity, hiatal hernia, anorexia, bulimia, dental decay, post-operative aspiration, migraines and other disorders by administering to a patient a therapeutically effective amount of at least one proton pump inhibitor. In other embodiments, the proton pump inhibitor can be administered with one or more histamine antagonists, antacids, bismuth compounds, anti-viral agents, anti-fungal agents, NSAIDs, steroids, cyclodextrins, cyclodextrin derivatives, and migraine drugs.
    Type: Application
    Filed: November 16, 2004
    Publication date: February 2, 2006
    Applicant: Eisai Co., Ltd.
    Inventors: Jay Barth, John Ieni
  • Publication number: 20060018839
    Abstract: The invention provides methods for treating and/or preventing Alzheimer's disease, psychiatric illnesses, encephalitis, meningitis, fetal alcohol syndrome, Karsakoff's syndrome, anoxic brain injury, cardiopulmonary resuscitation injuries, diabetes, Sjogren's syndrome, mental retardation, developmental delay, menopause, strokes, macular degeneration, neuronal loss associated with macular degeneration, sleep disorders, severe Alzheimer's disease, jet lag, post-traumatic stress disorder, anxiety disorders, panic attacks, obsessive-compulsive disorder, amnesia, and other disorders by administering to a patient in need thereof at least one cholinesterase inhibitor. The invention also provides novel pharmaceutical compositions that can be administered to the eyes or to the nose of patients. In one embodiment, the cholinesterase inhibitor is donepezil, a stereoisomer thereof and/or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: November 16, 2004
    Publication date: January 26, 2006
    Applicant: Eisai Co., Ltd.
    Inventors: John Ieni, Raymond Pratt
  • Publication number: 20060009439
    Abstract: The present invention relates to a compound represented by the formula (I): (wherein, R3, R6, R7 and R21 are the same as or different from one another and each represents a hydroxyl group etc.), a pharmacologically acceptable salt thereof or a hydrate of them. The compound (I) of the present invention suppresses angiogenesis, in particular, suppresses VEGF production in a hypoxic condition and is useful as a therapeutic agent for treating solid cancer.
    Type: Application
    Filed: May 29, 2003
    Publication date: January 12, 2006
    Applicants: MERCIAN CORPORATION, Eisai Co., Ltd.
    Inventors: Yoshihiko Kotake, Jun Niijima, Yoshio Fukuda, Mitsuo Nagai, Regina Kanada, Takashi Nakashima, Masahi Yoshida, Toshio Tsuchida
  • Publication number: 20060004205
    Abstract: The present invention provides a method of industrially and advantageously producing a 5-(2?-pyridyl)-2-pyridone derivative. The present invention relates to a production method of a 5-(2?-pyridyl)-2-pyridone derivative represented by the formula (VI), which includes reacting a pyridine derivative of the formula (I) with a brominating agent to give a 5-bromopyridine derivative of the formula (II), reacting the obtained 5-bromopyridine derivative with a metallizing agent to give an organometallic compound of the formula (III), reacting the obtained organometallic compound with a 2-sulfonylpyridine derivative of the formula (IV) to give a 6-alkoxy-3,2?-bipyridine derivative of the formula (V) and hydrolyzing the obtained 6-alkoxy-3,2?-bipyridine derivative: wherein each symbol is as defined in the Description.
    Type: Application
    Filed: July 23, 2003
    Publication date: January 5, 2006
    Applicants: KURARAY CO. LTD., EISAI CO. LTD.
    Inventors: Kenichi Koyakumaru, Yoshimi Fukunaga, Youichi Satake
  • Patent number: 6982274
    Abstract: The present invention provides a novel 1H-indazole compound having an excellent JNK inhibitory action. More specifically, it provides a compound represented by the following formula, a salt thereof or a hydrate of them. Wherein R1 is a C6-C14 aromatic cyclic hydrocarbon group etc.; R2, R4 and R5 each independently represent a hydrogen atom, a halogen atom, a cyano group etc.; L is a single bond, or a C1-C6 alkylene group etc.; X is a single bond, or a group represented by —CO—NH— or —NH—CO—, etc.; and Y is a C3-C8 cycloalkyl group, a C6-C14 aromatic cyclic hydrocarbon group or a 5- to 14-membered aromatic heterocyclic group etc.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: January 3, 2006
    Assignee: Eisai Co., Ltd.
    Inventors: Hitoshi Oinuma, Norihito Ohi, Nobuaki Sato, Motohiro Soejima, Hidenori Seshimo, Taro Terauchi, Takashi Doko, Naohiro Kohmura
  • Publication number: 20050277652
    Abstract: A compound represented by the following formula, a salt thereof or a hydrate of the foregoing has an excellent hepatocyte growth factor receptor (HGFR) inhibitory activity, and exhibits anti-tumor activity, angiogenesis inhibitory activity and cancer metastasis inhibitory activity. [R1 represents C1-6 alkyl or the like; R2 and R3 represent hydrogen; R4, R5, R6, and R7 may be the same or different and each represents hydrogen, halogen, C1-6 alkyl or the like; R8 represents hydrogen or the like; R9 represents C1-6 alkyl or the like; V1 represents oxygen or the like; V2 represents oxygen or sulfur; W represents —NH— or the like; X represents —CH?, nitrogen or the like; and Y represents oxygen or the like.
    Type: Application
    Filed: February 25, 2005
    Publication date: December 15, 2005
    Applicant: Eisai Co., Ltd.
    Inventors: Tomohiro Matsushima, Keiko Takahashi, Setsuo Funasaka, Hiroshi Obaishi
  • Publication number: 20050272761
    Abstract: The present invention relates to novel 3,5-substituted 7-azaindole compounds of formula (I), their use in the inhibition of c-Jun N-terminal kinases, their use in medecine and particularly in the prevention and/or treatment of neurodegenerative disorders related to apoptosis and/or inflammation. The invention also provides processes for manufacture of said compounds, compositions containing them and processes for manufacturing such compositions.
    Type: Application
    Filed: March 17, 2003
    Publication date: December 8, 2005
    Applicant: Eisai Co., Ltd.
    Inventors: Piotr Graczyk, Hirotoshi Numata, Afzal Khan, Vanessa Palmer
  • Publication number: 20050250812
    Abstract: The invention describes novel methods for treating and preventing dementia caused by vascular diseases; dementia associated with Parkinson's disease; Lewy Body dementia; AIDS dementia; mild cognitive impairments; age-associated memory impairments; cognitive impairments and/or dementia associated with neurologic and/or psychiatric conditions, including epilepsy, brain tumors, brain lesions, multiple sclerosis, Down's syndrome, Rett's syndrome, progressive supranuclear palsy, frontal lobe syndrome, and schizophrenia and related psychiatric disorders; cognitive impairments caused by traumatic brain injury, post coronary artery by-pass graft surgery, electroconvulsive shock therapy, and chemotherapy, administering a therapeutically effective amount of at least one of the cholinesterase inhibitor compounds described herein.
    Type: Application
    Filed: July 15, 2005
    Publication date: November 10, 2005
    Applicant: Eisai Co., Ltd.
    Inventor: Raymond Pratt
  • Publication number: 20050239870
    Abstract: The present invention provides compounds having formula (I): and additionally provides methods for the synthesis thereof and methods for the use thereof in the treatment of cancer, wherein R1-R7, X1, X2, R, Q, and n are as defined herein.
    Type: Application
    Filed: March 21, 2003
    Publication date: October 27, 2005
    Applicant: EISAI CO., LTD.,
    Inventors: James Kowalczyk, Galina Kuznetsov, Shawn Schiller, Boris Seletsky, Mark Spyvee, Hu Yang
  • Patent number: 6955760
    Abstract: In a trap flow path, two diluents are supplied by solvent pumps that can respectively determine the flow rates independently. One of the diluents is allowed to pass through a fraction loop so as to direct a fractioned component(s) held in the fraction loop to a trap column together with a mobile phase. The other diluent is allowed to join with a flow path that has passed through the fraction loop on the downstream side of the fraction loop, and flows to the trap column while diluting the mobile phase from the flow path. In the trap column, the sample component(s) is condensed while being trapped therein.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: October 18, 2005
    Assignees: Shimadzu Corporation, Eisai Co., Ltd.
    Inventor: Yosuke Iwata
  • Publication number: 20050227959
    Abstract: The present invention provides a compound that has an excellent inhibitory activity on STAT6 activation and is effective against allergic diseases, and a medicinal composition thereof. According to the present invention, disclosed is the compound represented by the General Formula (I) [where R1 and R2 independently represent a C1-6 alkyl group and the like that may have a hydrogen atom or a substituent; R3 represents a C1-6 alkyl group and the like that may have a substituent; R4 and R5 independent represents a hydrogen atom or a C1-6 alkyl group and the like that may have a substituent; R6 represents a hydrogen atom and the like; W represents —SO2— and the like; and X represents a sulphur atom and the like.]or a salt thereof, or a hydrate thereof.
    Type: Application
    Filed: February 2, 2005
    Publication date: October 13, 2005
    Applicant: Eisai Co., Ltd.
    Inventors: Ichiro Yoshida, Shuichi Suzuki
  • Patent number: 6951865
    Abstract: The present invention provides a novel compound having an excellent corticotrophin-releasing-factor receptor antagonistic activity. That is, it provides a compound represented by the following formula, a pharmacologically acceptable salt thereof or hydrates thereof. Wherein A, B and D are the same as or different from each other and each represents a group represented by the formula —(CR1R2)m— (wherein R1 and R2 are the same as or different from each other and each represents a C1-6 alkyl group etc.), —NR3— (wherein R3 represetns hydrogen etc.) etc.; E and G are the same as or different from each other and each represents a group represented by the formula —(CR6R7)p— (wherein R6and R7 are the same as or different from each other and each represents hydrogen etc.; and p represents an integer of 0, 1 or 2); J represents a carbon atom or nitrogen atom, each substituted with C1-6 alkyl group optionally substituted with a halogen atom, etc.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: October 4, 2005
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeki Hibi, Yorihisa Hoshino, Tatsuya Yoshiuchi, Kogyoku Shin, Kouichi Kikuchi, Motohiro Soejima, Mutsuko Tabata, Yoshinori Takahashi, Hisashi Shibata, Tetsuya Hirakawa
  • Patent number: 6949585
    Abstract: The present invention provides a compound which has cytokine production inhibitory activity and is useful for the treatment of diseases which is associated with cytokine. The compound is represented by the following general formula (I) [wherein A represents a cyclic group which may be substituted; the partial structure -DE- represents a group represented by —CH2CH2— or —CH?CH—; W represents a group represented by —CH2—, —CH2CH2—, —CH?CH— or —CH?; the partial structure >XY— represents a group represented by >CH—(CH2)n—, >C?CH—, >CH—CH2—CH(OH)—, >CH—CH2—C(?O)—, >CH—O— or >CH—O—CO—, provided that when W is —CH?, then XY— represents C—(CH2)p—; Z represents a divalent aliphatic hydrocarbon group; R1 and R2, which may be the same or different, each represents a hydrogen atom, or a hydroxyl, alkoxy or alkoxyalkoxy group; m is an integer of 0 or 1].
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: September 27, 2005
    Assignee: Eisai Co., Ltd.
    Inventors: Yoshihito Eguchi, Ken-ichi Chiba, Masaki Goto, Hiroshi Obaishi, Yoshikazu Kuboi
  • Patent number: 6949571
    Abstract: The present invention provides a novel compound having an excellent AMPA receptor inhibitory action and/or kainate inhibitory action. A compound represented by the following formula, a salt thereof or hydrates thereof. In the formula, Q indicates NH, O or S; and R1, R2, R3, R4 and R5 are the same as or different from each other and each indicates hydrogen atom, a halogen atom, a C1-6 alkyl group or a group represented by the formula —X-A (wherein X indicates a single bond, an optionally substituted C1-6 alkylene group etc.; and A indicates an optionally substituted C6-14 aromatic hydrocarbocyclic group or 5- to 14-membered aromatic heterocyclic group etc.).
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: September 27, 2005
    Assignee: Eisai Co., Ltd.
    Inventors: Satoshi Nagato, Kohshi Ueno, Koki Kawano, Yoshihiko Norimine, Koichi Ito, Takahisa Hanada, Masataka Ueno, Hiroyuki Amino, Makoto Ogo, Shinji Hatakeyama, Anthony John Groom, Leanne Rivers, Terence Smith
  • Publication number: 20050208124
    Abstract: A medicament is provided containing as an active ingredient at least one of riboflavin, a riboflavin derivative or a pharmacologically acceptable salt thereof, which has the action of suppressing IL-1?, IL-6, IL-10, INF-?, TNF-?, GM-CSF, IL-8, MCP-1 and other cytokines. Moreover, a preventative or therapeutic agent for inflammatory diseases accompanied by hypercytokinemia is provided which has excellent cytokine suppression effect.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 22, 2005
    Applicant: EISAI Co., Ltd.
    Inventors: Seiichi Araki, Mamoru Suzuki, Kohtarou Kodama, Toshio Toyosawa
  • Publication number: 20050181039
    Abstract: The present invention provides micelles, solutions comprising micelles, methods for preparing micelles, and methods for delivering micelles to patients. The micelles have fixed, preselected hydrodynamic diameters and are formed from basic or acidic amphiphilic compounds.
    Type: Application
    Filed: April 15, 2005
    Publication date: August 18, 2005
    Applicant: Eisai Co., Ltd.
    Inventors: James McShane, Tori Arens, Kazuhiro Kaneko, Tomohiro Watanabe, Kazuhide Ashizawa