Patents by Inventor Nobuo Ishiyama

Nobuo Ishiyama 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).

  • Patent number: 8871942
    Abstract: An object is to provide a process for producing the compound of formula 1 in higher yield by the ring-opening addition reaction of epoxytriazole with amine under mild conditions without using a large excess of 4-methylenepiperidine. The process for producing (2R,3R)-2-(2,4-difluorophenyl)-3-(4-methylenepiperidin-1-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol or an acid addition salt thereof comprises reacting (2R,3S)-2-(2,4-difluorophenyl)-3-methyl-2-[(1H-1,2,4-triazol-1-yl)methyl]oxirane with an acid addition salt of 4-methylenepiperidine in a reaction solvent in the presence of a hydroxide of an alkali metal or an alkaline earth metal selected from the group consisting of lithium, sodium, calcium, and strontium, or a hydrate thereof.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: October 28, 2014
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Mitsuo Mimura, Masahito Watanabe, Nobuo Ishiyama, Takuya Yamada
  • Publication number: 20130150586
    Abstract: An object is to provide a process for producing the compound of formula 1 in higher yield by the ring-opening addition reaction of epoxytriazole with amine under mild conditions without using a large excess of 4-methylenepiperidine. The process for producing (2R,3R)-2-(2,4-difluorophenyl)-3-(4-methylenepiperidin-1-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol or an acid addition salt thereof comprises reacting (2R,3S)-2-(2,4-difluorophenyl)-3-methyl-2-[(1H-1,2,4-triazol-1-yl)methyl]oxirane with an acid addition salt of 4-methylenepiperidine in a reaction solvent in the presence of a hydroxide of an alkali metal or an alkaline earth metal selected from the group consisting of lithium, sodium, calcium, and strontium, or a hydrate thereof.
    Type: Application
    Filed: August 31, 2011
    Publication date: June 13, 2013
    Applicant: KAKEN PHARMACEUTICAL CO., LTD.
    Inventors: Mitsuo Mimura, Masahito Watanabe, Nobuo Ishiyama, Takuya Yamada
  • Publication number: 20080027038
    Abstract: Compounds of structural formula (I) where A is a lipophilic group including an aliphatic bridging group, B is a lipophilic group, D is a group having at least one amino or substituted amino group and R is hydrogen, alkyl or cycloalkyl, and pharmaceutically acceptable salts and individual isomers thereof, which have growth hormone releasing activity in humans or animals.
    Type: Application
    Filed: August 20, 2007
    Publication date: January 31, 2008
    Applicants: Kaken Pharmaceutical Co., Ltd., Molecular Research Institute
    Inventors: HIdenori Funamizu, Nobuo Ishiyama, Satoru Ikegami, Tadashi Okumo, Kiyoshi Inoguchi, Ping Huang, Gilda Loew
  • Patent number: 7279573
    Abstract: Compounds of structural Formula (I) where A is a lipophilic group including an aliphatic bridging group, B is a lipophilic group, D is a group having at least one amino or substituted amino group and R is hydrogen, alkyl or cycloalkyl, and pharmaceutically acceptable salts and individual isomers thereof, which have growth hormone releasing activity in humans or animals
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: October 9, 2007
    Assignees: Kaken Pharmaceutical Co., Ltd., Molecular Research Institute
    Inventors: Hidenori Funamizu, Nobuo Ishiyama, Satoru Ikegami, Tadashi Okuno, Kiyoshi Inoguchi, Ping Huang, Gilda Loew
  • Publication number: 20060142264
    Abstract: Compounds of structural Formula (I) where A is a lipophilic group including an aliphatic bridging group, B is a lipophilic group, D is a group having at least one amino or substituted amino group and R is hydrogen, alkyl or cycloalkyl, and pharmaceutically acceptable salts and individual isomers thereof, which have growth hormone releasing activity in humans or animals.
    Type: Application
    Filed: February 23, 2006
    Publication date: June 29, 2006
    Applicants: Kaken Pharmaceutical Co., Ltd., Molecular Research Institute
    Inventors: Hidenori Funamizu, Nobuo Ishiyama, Satoru Ikegami, Tadashi Okuno, Kiyoshi Inoguchi, Ping Huang, Gilda Loew
  • Patent number: 7064121
    Abstract: Compounds of structural Formula (I) where A is a lipophilic group including an aliphatic bridging group, B is a lipophilic group, D is a group having at least one amino or substituted amino group and R is hydrogen, alkyl or cycloalkyl, and pharmaceutically acceptable salts and individual isomers thereof, which have growth hormone releasing activity in humans or animals
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: June 20, 2006
    Assignees: Kaken Pharmaceutical Co., Ltd., Molecular Research Institute
    Inventors: Hidenori Funamizu, Nobuo Ishiyama, Satoru Ikegami, Tadashi Okuno, Kiyoshi Inoguchi, Ping Huang, Gilda Loew
  • Patent number: 7022677
    Abstract: Disclosed are the novel compounds as growth hormone secretagogues represented by structural Formula (I), wherein R1 is, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryl, or substituted or unsubstituted amino, X is —CO— or —SO2—, Y is Formula (II), wherein n is an integer from 0–4, R4 is hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, R5 and R6 are independently selected from hydrogen, substituted or unsubstituted alkyl, or R5 and R6 or R4 and R5 are taken together to form substituted or unsubstituted alkylene, R2 is hydrogen, or substituted or unsubstituted alkyl, R3 is substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, D is substituted or unsubstituted amino, substituted or unsubstituted alkoxy, or substituted or unsubstituted alkylthio, * represents an asymmetric center, and ph
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: April 4, 2006
    Assignees: Kaken Pharmaceutical Co., Ltd., Molecular Research Institute
    Inventors: Nobuo Ishiyama, Hirohide Ishige, Mitsuo Mimura, Tadashi Okuno, Kiyoharu Ukai, Takeshi Kiyofuji, Shinji Tauchi, Kiyoshi Inoguchi, Ping Huang, Linda J. Maki, legal representative, Gilda H. Loew, deceased
  • Publication number: 20060014701
    Abstract: Disclosed are the novel compounds as growth hormone secretagogues represented by the structural Formula I: wherein R1 is, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryl, or substituted or unsubstituted amino, X is —CO— or —SO2—, Y is: wherein n is an integer from 0-4, R4 is hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, R5 and R6 are independently selected from hydrogen, substituted or unsubstituted alkyl, or R5 and R6 or R4 and R5 are taken together to form substituted or unsubstituted alkylene, R2 is hydrogen, or substituted or unsubstituted alkyl, R3 is substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, D is substituted or unsubstituted amino, substituted or unsubstituted alkoxy, or substituted or unsubstituted alkylthio, * represents an asymmetric center, and phar
    Type: Application
    Filed: September 6, 2005
    Publication date: January 19, 2006
    Applicants: Kaken Pharmaceutical Co., Ltd., Molecular Research Institute
    Inventors: Nobuo Ishiyama, Hirohide Ishige, Mitsuo Mimura, Tadashi Okuno, Kiyoharu Ukai, Takeshi Kiyofuji, Shinji Tauchi, Kiyoshi Inoguchi, Ping Huang, Gilda Loew, Linda Maki
  • Publication number: 20050059699
    Abstract: Compounds of structural Formula (I) where A is a lipophilic group including an aliphatic bridging group, B is a lipophilic group, D is a group having at least one amino or substituted amino group and R is hydrogen, alkyl or cycloalkyl, and pharmaceutically acceptable salts and individual isomers thereof, which have growth hormone releasing activity in humans or animals.
    Type: Application
    Filed: October 13, 2004
    Publication date: March 17, 2005
    Applicants: Kaken Pharmaceutical Co., Ltd., Molecular Research Institute
    Inventors: Hidenori Funamizu, Nobuo Ishiyama, Satoru Ikegami, Tadashi Okuno, Kiyoshi Inoguchi, Ping Huang, Gilda Loew
  • Patent number: 6864250
    Abstract: Compounds of structural Formula (I) where A is a lipophilic group including an aliphatic bridging group, B is a lipophilic group, D is a group having at least one amino or substituted amino group and R is hydrogen, alkyl or cycloalkyl, and pharmaceutically acceptable salts and individual isomers thereof, which have growth hormone releasing activity in humans or animals
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: March 8, 2005
    Assignees: Kaken Pharmaceutical Co., Ltd., Molecular Research Institute
    Inventors: Hidenori Funamizu, Nobuo Ishiyama, Satoru Ikegami, Tadashi Okuno, Kiyoshi Inoguchi, Ping Huang, Gilda Loew
  • Patent number: 5756822
    Abstract: An acetamide derivative having the general formula (I): ##STR1## or a pharmacologically acceptable salt thereof; a synthetic intermediate of the above-mentioned acetamide derivative; a treating agent for peptic ulcer and for gastritis which comprises the above-mentioned compound having the general formula (I) as an effective ingredient, and a process for treating peptic ulcer and gastritis using the above-mentioned compound having the general formula (I), are disclosed.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: May 26, 1998
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Nobuo Ishiyama, Toshihiro Koyama, Mitsuo Hayashida, Katsuyuki Otsuka, Masahiro Fujii, Kunio Kimura, Yoshiyuki Hata, Nobuko Miyao
  • Patent number: 5672597
    Abstract: An acetamide derivative having the general formula (I): ##STR1## or a pharmacologically acceptable salt thereof; a synthetic intermediate of the above-mentioned acetamide derivative; a treating agent for peptic ulcer and for gastritis which comprises the above-mentioned compound having the general formula (I) as an effective ingredient, and a process for treating peptic ulcer and gastritis using the above-mentioned compound having the general formula (I), are disclosed.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: September 30, 1997
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Nobuo Ishiyama, Toshihiro Koyama, Mitsuo Hayashida, Katsuyuki Otsuka, Masahiro Fujii, Kunio Kimura, Yoshiyuki Hata, Nobuko Miyao
  • Patent number: 5095016
    Abstract: A compound of the formula (I): ##STR1## or a pharmaceutically acceptable salt thereof, wherein: R.sup.1 is a hydrogen atom, a substituted or unsubstituted C.sub.1-6 alkyl group, a C.sub.2-6 alkenyl group, a C.sub.2-6 alkynyl group or a R.sup.7 --CO-- group (wherein R.sup.7 is a C.sub.1-6 alkyl group, a phenyl group, a C.sub.2-6 alkenyl group which may be substituted by a phenyl group, or a C.sub.1-6 alkoxy group);R.sup.2 is a hydrogen atom, a substituted or unsubstituted C.sub.1-8 alkyl group, or a phenyl group;R.sup.3 is a hydrogen atom, and R.sup.4 is a hydroxyl group, or R.sup.3 and R.sup.4 together form a bond;each of R.sup.5 and R.sup.6 is a C.sub.1-4 alkyl group; andY is a cyano group, a halogen atom, a nitro group, a C.sub.1-6 alkyl group, a C.sub.2-6 alkynyl group, a C.sub.1-6 alkylcarbonyl group, a C.sub.1-6 alkoxy group, a di-C.sub.1-6 alkylaminocarbonyl group, an aryl group, a C.sub.1-6 alkoxycarbonyl group, a carboxyl group or a morpholinocarbonyl group.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: March 10, 1992
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Katuyuki Ohtuka, Nobuo Ishiyama, Yasuhito Iida, Kenji Seri, Takeshi Murai, Kazuko Sanai, Yoshihiro Ishizaka
  • Patent number: 4971985
    Abstract: A pyridylketoxime ether compound of the formula: ##STR1## wherein Ar is a phenyl, naphthyl, or heterocyclic group unsubstituted or substituted by a C.sub.1 -C.sub.8 alkyl group, a C.sub.1 -C.sub.8 alkylamino group, a C.sub.1 -C.sub.8 alkoxy group, a C.sub.1 -C.sub.8 alkoxycarbonyl group, a trifluoromethyl group, a nitro group or a halogen atom, X is a --(CH.sub.2).sub.m -- group wherein m is an integer of from 1 to 5, a --(CH.sub.2).sub.m --Y-- group wherein Y is an oxygen or sulfur atom and m is as defined above, or a --CH.sub.2 --(CH.dbd.CH).sub.n -- group wherein n is an integer of 1 or 2, and R is a phenyl, naphthyl, C.sub.3 -C.sub.8 cycloalkyl or heterocyclic group unsubstituted or substituted by a C.sub.1 -C.sub.8 alkyl group, a C.sub.1 -C.sub.8 alkylamino group, a C.sub.1 -C.sub.8 alkoxy group, a C.sub.1 -C.sub.8 akloxycarbonyl group, a trifluoromethyl group, a nitro group or a halogen atom, or a salt thereof.
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: November 20, 1990
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Katsuyuki Otsuka, Nobuo Ishiyama, Makoto Watanabe, Kenji Seri, Kazuko Sanai, Kanji Muraoka
  • Patent number: 4883879
    Abstract: A cephalosporin compound having the formula: ##STR1## wherein R.sub.1 is a hydrogen atom, a halogen atom, a methoxy group, a substituted or unsubstituted vinyl group, or --CH.sub.2 --A wherein A is a hydrogen atom, an azido group, an acyloxy group, a carbamoyloxy group, a substituted or unsubstituted heterocyclic group (wherein the hetrocyclic ring is a 5- or 6-membered heterocyclic ring having from 1 to 4 oxygen, nitrogen or sulfur atoms), or a substituted or unsubstituted heterocyclic thio group (wherein the heterocyclic ring is a monocyclic or bicyclic heterocyclic ring having from 1 to 5 oxygen, nitrogen or sulfur atoms), or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: November 28, 1989
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Yoshiyuki Zama, Nobuo Ishiyama, Tsuneo Saita, Takanobu Naito, Masao Hirose, Masaaki Yokoyama, Taiji Asano, Hisato Senda, Keiji Sekine, Shigeru Sanai
  • Patent number: 4822786
    Abstract: A cephalosporin compound having the formula: ##STR1## wherein R.sub.1 is a hydrogen atom, a halogen atom, a methoxy group, a substituted or unsubstituted vinyl group, or --CH.sub.2 --A wherein A is a hydrogen atom, an azido group, an acyloxy group, a carbamoyloxy group, a subsituted or unsubstituted heterocyclic group (wherein the hetrocyclic ring is a 5- or 6-membered heterocyclic ring having from 1 to 4 oxygen, nitrogen or sulfur atoms), or a substituted or unsubstituted heterocyclic thio group (wherein the heterocyclic ring is a monocyclic or bicyclic heterocyclic ring having from 1 to 5 oxygen, nitrogen or sulfur atoms), or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: April 18, 1989
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Yoshiyuki Zama, Nobuo Ishiyama, Tsuneo Saita, Takanobu Naito, Masao Hirose, Masaaki Yokoyama, Taiji Asano, Hisato Senda, Keiji Sekine, Shigeru Sanai
  • Patent number: 4318923
    Abstract: Benzaminoethylphenoxycyclohexylacetic acid derivatives having the formula ##STR1## wherein R.sup.1 represents hydrogen atom, a halogen atom, hydroxyl group, a lower alkyl group or a lower alkoxy group; n is 1 or 2; and R.sup.2 represents hydrogen atom, a lower alkyl group which can have a substituent of phenyl group, a lower alkoxycarbonyl group, 3,3,5-trimethylcyclohexyloxycarbonyl group or a heterocyclic group; hexadecyl group; phenyl group which can have a substituent of a lower alkyl group, a lower alkoxy group, a lower alkoxycarbonyl group or a halogen atom; a cyclohexyl group or .alpha.-[4-(4-chlorobenzaminoethyl) phenoxy]-.alpha.-cyclohexylacetoxycyclohexyl group a antihyperlipidemic compositions thereof.
    Type: Grant
    Filed: March 13, 1981
    Date of Patent: March 9, 1982
    Assignee: Kaken Chemical Co., Ltd.
    Inventors: Yasuhiko Hamazaki, Nobuo Ishiyama, Toshiyuki Yamamoto, Kenji Seri, Reiko Sato
  • Patent number: 4278678
    Abstract: Novel substituted oxy-cyclohexylacetic acid derivatives as antihyperlipidemic agents are given. The compounds have the formula ##STR1## wherein n is 1 or 2; m is 0, 1 or 2; R.sub.1 represents a halogen atom, trifluoromethyl, a lower alkyl, a lower alkoxy, a lower alkylcarbonyl, dimethylphenylmethyl, cyclohexyl, phenyl, halogenophenyl, phenoxy or halogenophenoxy group, and two of R.sub.1 groups can be bonded to form an orthocondensed saturated alkylene ring; Hal represents a halogen atom; and R.sub.2 represents a hydrogen atom or a lower alkyl group.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: July 14, 1981
    Assignee: Kaken Chemical Co., Ltd.
    Inventors: Yasuhiko Hamazaki, Kenji Seri, Nobuo Ishiyama, Toshiyuki Yamamoto, Masao Sakasai, Reiko Sato
  • Patent number: 4153724
    Abstract: Benzoyl phenoxy acetic acid derivatives having the formula ##STR1## wherein R.sub.1 represents hydrogen or halogen atom or a lower alkyl group or a lower alkoxyl group; and R.sub.2 represents hydrogen atom or a lower alkyl group which impart excellent antihyperlipidemic activity are provided.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: May 8, 1979
    Assignee: Kaken Chemical Co., Ltd.
    Inventors: Yasuhiko Hamazaki, Toshiyuki Yamamoto, Shozo Kawabata, Kenji Seri, Masao Sakasai, Reiko Sato, Nobuo Ishiyama