Patents by Inventor Hisaki Kajino

Hisaki Kajino 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).

  • Publication number: 20160137644
    Abstract: It is an object of the present invention to provide a method for producing a high-purity tricyclic heterocyclic compound represented by formula (I), which is useful as a production intermediate for a pharmaceutical agent, wherein the method is an efficient production method with short steps and with a high yield, which does not use, as raw materials, expensive bromopyruvate and highly harmful copper chromite, and does not need silica gel column chromatography that generates, as by-products, large quantities of waste. The present invention relates to production of Compound (I) by the following method.
    Type: Application
    Filed: June 25, 2014
    Publication date: May 19, 2016
    Applicant: Daiichi Sankyo Company, Limited
    Inventors: Hisaki Kajino, Makoto Michida, Yasuo Takahashi, Yasuhisa Kuwahara
  • Patent number: 8815880
    Abstract: To provide a hydrochloride of a tricyclic pyrazolopyrimidine compound inhibiting the effect of HSP90 and a crystal thereof. The present invention provides a hydrochloride of 2-{4-amino-2-[(3-chloro-4-methoxy-5-methylpyridin-2-yl)methyl]-2,7-dihydro-6-thia-1,2,3,5-tetraazabenzo[cd]azulen-8-yl}-N-methylacetamide which inhibits the ATPase activity of HSP90 and which has antitumor activity, a crystal thereof, a medicament comprising the same, an anticancer agent comprising the same, and the like.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: August 26, 2014
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Shinji Matuura, Hisaki Kajino, Tomoyuki Nagai, Keijiro Kobayashi
  • Publication number: 20120252854
    Abstract: A crystalline form of a hydrate of a dihydrochloride 5-(4-{[6-(4-amino-3,5-dimethylphenoxy)-1-methyl-1-H-benzimidazol-2-yl]methoxy}benzyl)-1,3-thiazolidine-2,4-dione represented by the following formula: wherein the crystalline form shows main peaks at interplanar spacings of 10.42, 5.85, 5.52, 3.84, 3.46 and 2.95 angstroms in X-ray powder diffraction obtained with Cu K? line radiation (wavelength ?=1.54 angstroms).
    Type: Application
    Filed: May 7, 2012
    Publication date: October 4, 2012
    Applicant: DAIICHI-SANKYO COMPANY, LIMITED
    Inventors: Hisaki Kajino, Yutaka Ikeuchi, Hiroshi Miyamoto, Eiji Numagami, Satoru Nihei
  • Publication number: 20120238759
    Abstract: A method for manufacturing a 6-substituted 1-methyl-1H-benzimidazole derivative represented by the formula (IV) wherein R3 represents a hydrogen atom or a C1-C4 alkyl group. A 4-substituted N2-methylbenzene-1,2-diamine derivative is prepared from a particular 5-substituted N-methyl-2-nitroaniline derivative, subsequently reacting the resulting compound with {4-[(2,4-dioxo-1,3-thiazolidin-5-yl)methyl]phenoxy}acetic acid or an acid chloride or a mixed acid anhydride thereof, and subsequently subjecting the resulting compound to intramolecular dehydration condensation. A compound of the formula (II) wherein R1 represents a hydrogen atom, a C1-C4 alkyl group, or a protective group for the nitrogen atom, and R2 represents a hydrogen atom or a protective group for the nitrogen atom is prepared and used as an intermediate.
    Type: Application
    Filed: November 25, 2010
    Publication date: September 20, 2012
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Yutaka Ikeuchi, Chiharu Satoh, Eiji Numagami, Satoru Nihei, Hisaki Kajino
  • Patent number: 8236834
    Abstract: It is an object of the present invention to provide the crystalline form of a thiazolidinedione compound, which is effective as a pharmaceutical ingredient for manufacturing a peroxisome proliferator-activated receptor (PPAR) activator and an anticancer pharmaceutical composition. The present invention relates to a crystalline form of a hydrate of 5-(4-{[6-(4-amino-3,5-dimethylphenoxy)-1-methyl-1-H-benzimidazol-2-yl]methoxy}benzyl)-1,3-thiazolidine-2,4-dione dihydrochloride represented by the following formula (I).
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: August 7, 2012
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Hisaki Kajino, Yutaka Ikeuchi, Eiji Numagami
  • Patent number: 8106079
    Abstract: A compound having the following formula (III) wherein R2 is hydrogen, alkyl, cycloalkyl, phenyl or a 5- or 6-membered heterocyclic, and X is oxygen, sulfur or nitrogen, and a method for preparing said compound.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: January 31, 2012
    Assignee: Sankyo Company, Limited
    Inventors: Hisaki Kajino, Hiroshi Miyamoto, Yutaka Ikeuchi
  • Publication number: 20110213158
    Abstract: It is an object of the present invention to provide the crystalline form of a thiazolidinedione compound, which is effective as a pharmaceutical ingredient for manufacturing a peroxisome proliferator-activated receptor (PPAR) activator and an anticancer pharmaceutical composition. The present invention relates to a crystalline form of a hydrate of 5-(4-{[6-(4-amino-3,5-dimethylphenoxy)-1-methyl-1-H benzimidazol-2-yl]methoxy}benzyl)-1,3-thiazolidine-2,4-dione dihydrochloride represented by the following formula (I).
    Type: Application
    Filed: February 8, 2008
    Publication date: September 1, 2011
    Inventors: Hisaki Kajino, Yutaka Ikeuchi, Hiroshi Miyamoto, Eiji Numagami, Satoru Nihei
  • Publication number: 20110160462
    Abstract: Thiazolidinedione compound crystalline forms useful as a bulk material for the manufacture of a peroxisome proliferator-activated receptor (PPAR) ? activator or an anticancer pharmaceutical composition are provided, which are hydrate crystalline forms of 5-(4-{[6-(4-amino-3,5-dimethylphenoxy)-1-methyl-1-H-benzimi dazol-2-yl]methoxy}benzyl)-1,3-thiazolidine-2,4-dione represented by Formula (I) below and of its dihydrochloride.
    Type: Application
    Filed: July 30, 2009
    Publication date: June 30, 2011
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Hisaki Kajino, Eiji Numagami, Satoru Nihei
  • Publication number: 20110124692
    Abstract: Thiazolidinedione compound crystalline forms useful as a bulk material for the manufacture of a peroxisome proliferator-activated receptor (PPAR) ? activator or an anticancer pharmaceutical composition are provided, which are hydrate crystalline forms of 5-(4-{[6-(4-amino-3,5-dimethylphenoxy)-1-methyl-1-H-benzimi dazol-2-yl]methoxy}benzyl)-1,3-thiazolidine-2,4-dione represented by Formula (I) below and of its dihydrochloride.
    Type: Application
    Filed: July 30, 2009
    Publication date: May 26, 2011
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Hisaki Kajino, Yutaka Ikeuchi, Eiji Numagami, Satoru Nihei
  • Publication number: 20110092555
    Abstract: A compound which is 5-{4-[(6-methoxy-1-methyl-1H-benzimidazol-2-yl)methoxy]benzyl}thiazolidine-2,4-dione hydrochloride, in crystal form wherein a powder x-ray diffraction pattern obtained by irradiation with a Cu K? line shows main peaks at interplanar spacings d=14.29, 7.12, 5.34, 4.97, 4.74, 3.95, 3.85, 3.75, 3.55, 3.51, 3.15, 2.84, 2.76, 2.52 and 2.37.
    Type: Application
    Filed: December 14, 2010
    Publication date: April 21, 2011
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Yoshitaka Nakamura, Chiharu Satoh, Hiroshi Miyamoto, Hisaki Kajino
  • Publication number: 20110046388
    Abstract: It is an object of the present invention to provide the crystalline form of a thiazolidinedione compound, which is effective as a pharmaceutical ingredient for manufacturing a peroxisome proliferator-activated receptor (PPAR) activator and an anticancer pharmaceutical composition. The present invention relates to a crystalline form of a hydrate of 5-(4-{[6-(4-amino-3,5-dimethylphenoxy)-1-methyl-1-H benzimidazol-2-yl]methoxy}benzyl)-1,3-thiazolidine-2,4-dione dihydrochloride represented by the following formula (I).
    Type: Application
    Filed: February 8, 2008
    Publication date: February 24, 2011
    Inventors: Hisaki Kajino, Yutaka Ikeuchi, Hiroshi Miyamoto, Eiji Numagami, Satoru Nihei
  • Patent number: 7816552
    Abstract: A method for preparing a compound having the following formula (I) by reducing a nitro group of the following formula (III) followed by carrying out an intramolecular dehydration condensation, wherein R2 is hydrogen, alkyl, cycloalkyl, phenyl or a 5- or 6-membered heterocyclic, and X is oxygen, sulfur or nitrogen.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: October 19, 2010
    Assignee: Sankyo Company, Limited
    Inventors: Hisaki Kajino, Hiroshi Miyamoto, Rei Okazaki, Yutaka Ikeuchi
  • Publication number: 20100234612
    Abstract: A compound having the following formula (III) wherein R2 is hydrogen, alkyl, cycloalkyl, phenyl or a 5- or 6-membered heterocyclic, and X is oxygen, sulfur or nitrogen, and a method for preparing said compound.
    Type: Application
    Filed: May 19, 2010
    Publication date: September 16, 2010
    Applicant: SANKYO COMPANY, LIMITED
    Inventors: Hisaki Kajino, Hiroshi Miyamoto, Yutaka Ikeuchi
  • Publication number: 20090023929
    Abstract: A method for preparing a compound having the following formula (I) by reducing a nitro group of the following formula (III) followed by carrying out an intramolecular dehydration condensation, wherein R2 is hydrogen, alkyl, cycloalkyl, phenyl or a 5- or 6-membered heterocyclic, and X is oxygen, sulfur or nitrogen.
    Type: Application
    Filed: September 26, 2005
    Publication date: January 22, 2009
    Inventors: Hisaki Kajino, Hiroshi Miyamoto, Rei Okazaki, Yutaka Ikeuchi
  • Publication number: 20080103185
    Abstract: There are provided crystals of a thiazolidinedione derivative having excellent prophylactic and therapeutic effects on a disease caused by insulin resistance and a process for producing the thiazolidinedione derivative with a high purity.
    Type: Application
    Filed: January 24, 2006
    Publication date: May 1, 2008
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Yoshitaka Nakamura, Chiharu Satoh, Hiroshi Miyamoto, Hisaki Kajino
  • Patent number: 5212322
    Abstract: Compounds with acaricidal, insecticidal and anthelmintic activities have the formula: ##STR1## wherein: --X--Y-- is selected from the group consisting of --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CHOH--, --CH.dbd.CH--, and --CH.sub.2 --C(.dbd.O)--;R.sup.1 is selected from the group consisting of a methyl group, an ethyl group, an isopropyl group, a sec-butyl group and groups of formula --C(CH.sub.3).dbd.CHR.sup.5 in which R.sup.5 is selected from the group consisting of a methyl group, an ethyl group and an isopropyl group;R.sup.2 represents a group of formula --(CH.sub.2).sub.n --C(R.sup.6).dbd.C(R.sup.7)(R.sup.8) in which n is 0, 1 or 2, R.sup.6 and R.sup.7 each is selected from the group consisting of a hydrogen atom and a methyl group and R.sup.8 is selected from the group consisting of a hydrogen atom, a C.sub.1-4 alkyl group, a phenyl group and a phenyl group substituted with at least one substituent selected from the group consisting of halogen, methyl and nitro substituents;R.sup.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: May 18, 1993
    Assignee: Sankyo Company, Limited
    Inventors: Takao Okazaki, Shuji Takahashi, Seigo Iwado, Keiji Tanaka, Toshiaki Yanai, Hisaki Kajino
  • Patent number: 5134152
    Abstract: Compounds of formula (I): ##STR1## [in which: R.sup.1 and R.sup.2 are hydrogen or alkyl, or together are cycloalkyl; R.sup.3 and R.sup.4 are hydrogen, alkyl or phenyl, or together are cycloalkyl; or R.sup.1 and R.sup.3 together are cycloalkyl fused to the oxetane ring; Ar is phenyl substituted by R.sup.5, R.sup.6 and R.sup.7, where R.sup.5, R.sup.6 and R.sup.7 are hydrogen, halogen, alkyl, alkoxy, halogenated alkyl or halogenated alkoxy; and R.sup.8 and R.sup.9 are hydrogen or alkyl] and salts thereof have valuable agricultural and pharmaceutical anti-fungal or fungicidal activity. They may be prepared by a variety of processes.
    Type: Grant
    Filed: December 4, 1990
    Date of Patent: July 28, 1992
    Assignee: Sankyo Company, Limited
    Inventors: Hideo Takeshiba, Junzo Tobitsuka, Kazuo Sato, Hisaki Kajino, Hiroyuki Itoh, Yukiyoshi Takahi, Hiroshi Ohta, Sadao Oida, Noriko Takeda, Toshiyuki Konosu, Hiroshi Yasuda
  • Patent number: 5008191
    Abstract: Compounds with acaricidal, insecticidal and anthelmintic activities have the formula: ##STR1## wherein: --X--Y-- is selected from the group consisting of --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CHOH--, --CH.dbd.CH--, and --CH.sub.2 --C(.dbd.O)--;R.sup.1 is selected from the group consisting of a methyl group, an ethyl group, an isopropyl group, a sec-butyl group and groups of formula --C(CH.sub.3).dbd.CHR.sup.5 in which R.sup.5 is selected from the group consisting of a methyl group, an ethyl group and an isopropyl group;R.sup.2 represents a group of formula --(CH.sub.2).sub.n --C(R.sup.6).dbd.C(R.sup.7)(R.sup.8) in which n is 0, 1 or 2, R.sup.6 and R.sup.7 each is selected from the group consisting of a hydrogen atom and a methyl group and R.sup.8 is selected from the group consisting of a hydrogen atom, a C.sub.1-4 alkyl group, a phenyl group and a phenyl group substituted with at least one substituent selected from the group consisting of halogen, methyl and nitro substitutents;R.sup.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: April 16, 1991
    Assignee: Sankyo Company Limited
    Inventors: Takao Okazaki, Shuji Takahashi, Seigo Iwado, Keiji Tanaka, Toshiaki Yanai, Hisaki Kajino