Patents by Inventor Mikiko Hamaguchi

Mikiko Hamaguchi 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: 5416082
    Abstract: Disclosed herein are pyrroloazepine derivatives having anti-.alpha..sub.1 activity and anti-serotonin activity represented by the following formula (I): ##STR1## wherein R means a hydrogen atom, a linear or branched C.sub.1-6 alkyl group or a C.sub.7-10 aralkyl group, A denotes a linear or branched C.sub.2-10 alkylene, alkenylene or alkynylene group, Z stands for O, NOR.sub.1 or NOCOR.sub.5 in which R.sub.1 and R.sub.5 is a hydrogen atom or an alkyl, aryl or aralkyl group, and Y means a particular piperidinyl or pyrrolidinyl group; and salts thereof. Their preparation processes are also disclosed.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: May 16, 1995
    Assignee: Suntory Limited
    Inventors: Akira Mizuno, Hidetsura Cho, Mikiko Hamaguchi, Toshio Tatsuoka, Takafumi Ishihara
  • Patent number: 5391731
    Abstract: Disclosed herein are pyrroloazepine derivatives, which are useful as therapeutics for circulatory diseases, represented by the following formula (I): ##STR1## wherein R means a hydrogen atom, a linear or branched C.sub.1-6 alkyl group or a C.sub.7-10 aralkyl group, A denotes a linear or branched C.sub.2-10 alkylene, alkenylene or alkynylene group, Z stands for O, NOR.sub.1 or NOCOR.sub.5 in which R.sub.1 and R.sub.5 is a hydrogen atom or an alkyl, aryl or aralkyl group, and Y means a particular piperidinyl or pyrrolidinyl group; and salts thereof. Their preparation processes are also disclosed.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: February 21, 1995
    Assignee: Suntory Limited
    Inventors: Akira Mizuno, Hidetsura Cho, Mikiko Hamaguchi, Toshio Tatsuoka, Takafumi Ishihara
  • Patent number: 5206239
    Abstract: Disclosed herein are pyrroloazepine derivatives, which are useful as therapeutics for circulatory diseases, represented by the following formula (I): ##STR1## wherein R means a hydrogen atom, a linear or branched C.sub.1-6 alkyl group or a C.sub.7-10 aralkyl group, A denotes a linear or branched C.sub.2-10 alkylene, alkenylene or alkynylene group, Z stands for O, NOR.sub.1 or NOCOR.sub.5 in which R.sub.1 and R.sub.5 is a hydrogen atom or an alkyl, aryl or aralkyl group, and Y means a particular piperidinyl or pyrrolidinyl group; and salts thereof. Their preparation processes are also disclosed.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: April 27, 1993
    Assignee: Suntory Limited
    Inventors: Akira Mizuno, Hidetsura Cho, Mikiko Hamaguchi, Toshio Tatsuoka, Takafumi Ishihara
  • Patent number: 5063243
    Abstract: Novel derivatives of caffeic acid of the general formula (I): ##STR1## wherein X is hydrogen atom or hydroxy; R.sup.1 is hydrogen atom, a straight or branched alkyl or alkenyl having 1 to 20 carbon atoms or a group of the formula:--(CH.sub.2).sub.n --Z--R.sup.2wherein n is an integer of 1 to 10; Z is oxygen atom, vinylene residue or a single bond; and R.sup.2 is a substituted or unsubstituted phenyl or heterocyclic residue is provided. These derivatives possess 12-lipoxygenase inhibitory activity and are useful for curing and preventing circulatory diseases. A pharmaceutical composition containing said derivtive is also provided.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: November 5, 1991
    Assignee: Suntory, Ltd.
    Inventors: Hidetsura Cho, Masaru Ueda, Mie Tamaoka, Mikiko Hamaguchi, Seiitsu Murota, Ikuo Morita