Patents by Inventor Hachiro Sugimoto

Hachiro Sugimoto 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: 4942169
    Abstract: A novel piperidine derivative is defined by the formula (I), including a salt thereof, ##STR1## wherein R.sup.1 denotes a univalent group derived from one selected among substituted or unsubstituted benzene, pyridine, pyrazine, indole, anthraquinone, quinoline, substituted or unsubstituted phthalimide, homophthalimide, pyridinecarboxylic acid imide, pyridine N-oxide, pyrazinedicarboxylic acid imide, naphthalenedicarboxylic acid imide, substituted or unsubstituted quinazolinedione, 1,8-naphthalimide, bicyclo [2.2.2.] oct-5-ene-2,3-dicarboxylic acid imide and pyromerylimide,X denotes a group of the formula --(CH.sub.2).sub.n --, a group of the formula --O(CH.sub.2).sub.n --, a group of the formula --S(CH.sub.2).sub.n --, a group of the formula --NH(CH.sub.2).sub.n --, a group of the formula --SO.sub.2 NH(CH.sub.2).sub.n --, a group of the formula ##STR2## a group of the formula ##STR3## a group of the formula ##STR4## a group of the formula --CH.sub.2 NH(CH.sub.2).sub.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: July 17, 1990
    Assignee: Eisai Co., Ltd.
    Inventors: Hachiro Sugimoto, Takaharu Nakamura, Yutaka Tsuchiya, Hiroyuki Sugumi, Kunizou Higurashi, Norio Karibe, Yoshiharu Yamanishi, Hiroo Ogura, Shin Araki, Atsuhiko Kubota, Michiko Ohtake, Kiyomi Tamatsu
  • Patent number: 4921863
    Abstract: Cyclic amine derivatives of the formula: ##STR1## or the pharmacologically acceptable salts thereof, wherein the symbols are as defined in the specification, as effective in relieving, curing or preventing mental symptoms due to cerebral vascular disorders.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: May 1, 1990
    Assignee: Eisai Co., Ltd.
    Inventors: Hachiro Sugimoto, Takaharu Nakamura, Norio Karibe, Isao Saito, Kunizou Higurashi, Masahiro Yonaga, Takeru Kaneko, Takahiro Nakazawa, Masataka Ueno, Kiyomi Yamatsu
  • Patent number: 4895841
    Abstract: A cyclic amine compound is defined by the formula: ##STR1## in which J is indanyl, indanonyl, indenyl, indenonyl, indanedionyl, tetralonyl, benzosuberonyl, indanolyl or a divalent group thereof, K is phenyl, an arylalkyl or cynnamyl, B is --(CHR22)r--, R22 being H or methyl, --CO--(CHR22)r--, .dbd.(CH--CH.dbd.CH)b--, .dbd.CH--(CH2)c-- or .dbd.(CH--CH)d.dbd. and the ring including T and Q is piperidine. The compound is useful to treat senile dementia.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: January 23, 1990
    Assignee: Eisai Co., Ltd.
    Inventors: Hachiro Sugimoto, Yutaka Tsuchiya, Kunizou Higurashi, Norio Karibe, Youichi Iimura, Atsushi Sasaki, Yoshiharu Yamanishi, Hiroo Ogura, Shin Araki, Takashi Kosasa, Atsuhiko Kubota, Michiko Kosasa, Kiyomi Yamatsu
  • Patent number: 4849431
    Abstract: A novel piperidine derivative or a pharmacologically acceptable salt thereof is used in the treatment and prevention of dementias and sequelae of cerebrovascular diseases. These compounds also exhibit strong, highly selective anticholinesterase activity and may be orally or parenterally administered.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: July 18, 1989
    Assignee: Eisai Co., Ltd.
    Inventors: Hachiro Sugimoto, Takaharu Nakamura, Yutaka Tsuchiya, Hiroyuki Sugumi, Kunizou Higurashi, Norio Karibe, Yoshiharu Yamanishi, Hiroo Ogura, Shin Araki, Atsuhiko Kubota, Michiko Ohtake, Kiyomi Tamatsu
  • Patent number: 4599337
    Abstract: Treatment methods are disclosed which utilize antiphlogistic/antipyretic/analgesic agents containing as active ingredient theobromine and theophylline derivatives represented by the general formula: ##STR1## wherein one of A and B is --CH.sub.3 and the other of A and B is ##STR2## wherein R is a hydrogen atom or a lower alkyl group, Z is selected from the group consisting of (1) a group of the formula ##STR3## wherein X.sub.1 and X.sub.2 are the same or different and each represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a trifluoromethyl group or a halogen atom; (2) a pyridyl group; or (3) a group of the formula: ##STR4## wherein Y.sub.1 and Y.sub.2 may be the same or different and Y.sub.1 and Y.sub.2 are selected from the group consisting of a hydrogen atom, a lower alkyl group, a lower alkoxy group, a trifluoromethyl group and a halogen atom, X is a nitrogen atom or a carbon atom, m is 2 or 3, and n is an integer of from 2 to 10, with the provisos that when (i) A is --CH.sub.
    Type: Grant
    Filed: July 16, 1985
    Date of Patent: July 8, 1986
    Assignee: Eisai Co., Ltd.
    Inventors: Takeru Kaneko, Satoru Ozaki, Kimie Takizawa, Hachiro Sugimoto
  • Patent number: 4599414
    Abstract: Derivatives of theophylline substituted at the 7 position with various substituents containing a homopiperazine nucleus. The compounds can be prepared reacting theophylline or reactive intermediate containing same with a homopiperazine compound. The compounds exhibit antihistaminic activity and vasodilating activity.
    Type: Grant
    Filed: September 1, 1983
    Date of Patent: July 8, 1986
    Assignee: Eisai Co., Ltd.
    Inventors: Hachiro Sugimoto, Sachiyuki Hamano, Tadao Shoji
  • Patent number: 4564617
    Abstract: A novel compound has the following formula: ##STR1## in which R.sub.1 and R.sub.2 are methyl or a group having the formula: ##STR2## provided that one of R.sub.1 and R.sub.2 is methyl and the other is said group, wherein R stands for a hydrogen atom or a lower alkyl group, Z stands for a group ##STR3## in which X.sub.1 and X.sub.2, which may be the same or different, stand for a hydrogen atom, a lower alkyl group, a lower alkoxy group, a trifluoromethyl group or a halogen atom, or a pyridyl group or a group ##STR4## in which Y.sub.1 and Y.sub.2, which may be the same or different stand for a hydrogen atom, a lower alkyl group, a lower alkoxy group, a trifluoromethyl group or a halogen atom, X stands for a nitrogen or carbon atom, and n is an integer of from 2 to 10, provided that when R.sub.2 is the group having the formula II, X is not carbon and Z is not pyridyl.
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: January 14, 1986
    Assignee: Eisai Co., Ltd.
    Inventors: Hachiro Sugimoto, Takaharu Nakamura, Sachiyuki Hamazo, Yoshiharu Daiku
  • Patent number: 4543254
    Abstract: Treatment methods are disclosed which utilize antiphlogistic/antipyretic/analgesic agents containing as active ingredient theobromine and theophylline derivatives represented by the general formula: ##STR1## wherein one of A and B is --CH.sub.3 and the other of A and B is ##STR2## wherein R is a hydrogen atom or a lower alkyl group, Z is selected from the group consisting of (1) a group of the formula ##STR3## wherein X.sub.1 and X.sub.2 are the same or different and each represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a trifluoromethyl group or a halogen atom; (2) a pyridyl group; or (3) a group of the formula: ##STR4## wherein Y.sub.1 and Y.sub.2 may be the same or different and Y.sub.1 and Y.sub.2 are selected from the group consisting of a hydrogen atom, a lower alkyl group, a lower alkoxy group, a trifluoromethyl group and a halogen atom, X is a nitrogen atom or >CH--, m is 2 or 3, and n is an integer of from 2 to 10, with the provisos that when (i) A is --CH.sub.
    Type: Grant
    Filed: March 2, 1983
    Date of Patent: September 24, 1985
    Assignee: Eisai Co., Ltd.
    Inventors: Takeru Kaneko, Satoru Ozaki, Kimie Takizawa, Hachiro Sugimoto
  • Patent number: 4493837
    Abstract: There are disclosed theobromine derivatives wherein theobromine is substituted at the 1 position with substituted piperazino, homopiperazino and piperidino groups, and pharmacologically acceptable acid addition salts thereof. The compounds exhibit vasodilating and psychotropic and analgesic activities.
    Type: Grant
    Filed: October 20, 1982
    Date of Patent: January 15, 1985
    Assignee: Eisai Co., Ltd.
    Inventors: Hachiro Sugimoto, Sachiyuki Hamano, Tadao Shoji, Takeru Kaneko, Takeshi Uzuo
  • Patent number: 4426383
    Abstract: A novel compound has the following formula: ##STR1## in which R.sub.1 and R.sub.2 are methyl or a group having the formula: ##STR2## provided that one of R.sub.1 and R.sub.2 is methyl and the other is said group, wherein R stands for a hydrogen atom or a lower alkyl group, Z stands for a group ##STR3## in which X.sub.1 and X.sub.2, which may be the same or different, stand for a hydrogen atom, a lower alkyl group, a lower alkoxy group, a trifluoromethyl group or a halogen atom, or a pyridyl group or a group ##STR4## in which Y.sub.1 and Y.sub.2, which may be the same or different stand for a hydrogen atom, a lower alkyl group, a lower alkoxy group, a trifluoromethyl group or a halogen atom, X stands for a nitrogen or carbon atom, and n is an integer of from 2 to 10, provided that when R.sub.2 is the group having the formula II, X is not carbon and Z is not pyridyl.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: January 17, 1984
    Assignee: Eisai Co., Ltd.
    Inventors: Hachiro Sugimoto, Takaharu Nakamura, Sachiyuki Hamazo, Toshiji Igarashi, Yoshiharu Daiku