Patents by Inventor Kentaro Yoshimatsu

Kentaro Yoshimatsu 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: 7015241
    Abstract: An appetite-stimulating agent and a therapeutic agent for anorexia, each comprising, as an active ingredient, a sulfonamide derivative or sulfonic acid ester derivative represented by the following general formula (I): wherein the ring A represents a monocyclic or bicyclic aromatic ring which may be substituted, the ring B represents a 6-membered unsaturated hydrocarbon ring or a 6-membered unsaturated heterocyclic ring containing one nitrogen atom as a heteroatom, each of which may be substituted, the ring C represents a 5-membered heterocyclic ring containing one or two nitrogen atoms, which may be substituted, W represents a single bond or —CH?CH—, X represents —N(R1)— or an oxygen atom, Y represents a carbon atom or a nitrogen atom, Z represents —N(R2)— or a nitrogen atom, and R1 and R2 may be identical or different and each represents a hydrogen atom or a lower alkyl group, or a pharmacologically acceptable salt thereof, or a hydrate thereof.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: March 21, 2006
    Assignee: Eisai Co., Ltd.
    Inventors: Takashi Owa, Yoichi Ozawa, Takayuki Hida, Norimasa Miyamoto, Takeshi Nagasu, Tatsuo Okauchi, Hiroshi Yoshino, Naoko Hata, Kentaro Yoshimatsu, Nozomu Koyanagi, Kyosuke Kito
  • Publication number: 20040242628
    Abstract: An appetite-stimulating agent and a therapeutic agent for anorexia, each comprising, as an active ingredient, a sulfonamide derivative or sulfonic acid ester derivative represented by the following general formula (I): 1
    Type: Application
    Filed: March 5, 2004
    Publication date: December 2, 2004
    Inventors: Takashi Owa, Yoichi Ozawa, Takayuki Hida, Norimasa Miyamoto, Takeshi Nagasu, Tatsuo Okauchi, Hiroshi Yoshino, Naoko Hata, Kentaro Yoshimatsu, Nozomu Koyanagi, Kyosuke Kito
  • Publication number: 20040002505
    Abstract: The present invention provides a medicinal composition having an excellent antitumor activity.
    Type: Application
    Filed: March 31, 2003
    Publication date: January 1, 2004
    Inventors: Yoichi Ozawa, Kentaro Yoshimatsu, Junko Kai
  • Publication number: 20030215523
    Abstract: The present invention provides a medicinal composition having an excellent antitumor activity.
    Type: Application
    Filed: May 8, 2003
    Publication date: November 20, 2003
    Inventors: Yoichi Ozawa, Kentaro Yoshimatsu, Junko Kai
  • Patent number: 5952335
    Abstract: Novel fused polycyclic heterocycle derivatives having excellent antitumor effects and a process for producing the same. A compound represented by the following general formula (I) or pharmacologically acceptable salts thereof: ##STR1## wherein the ring A represents an optionally substituted monocyclic aromatic ring or a dicyclic fused ring in which at least one of the rings is an aromatic ring; the ring B represents pyrrole, 4H-1,4-oxazine, 4H-1,4-thiazine or 4(1H)-pyridone; the ring C represents an optionally substituted, monocyclic or dicyclic fused aromatic ring; and Y represents a group represented by the formula --e--f (wherein e represents a lower alkylene; and f represents amidino, guanidino or amino optionally substituted by optionally hydroxylated or optionally lower-alkylaminated lower alkyl;provided that the cases where the rings A and B are both optionally substituted monocyclic aromatic rings are excluded. Which has an excellent antitumor activity.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: September 14, 1999
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroyuki Sugumi, Jun Niijima, Yoshihiko Kotake, Toshimi Okada, Jun-ichi Kamata, Kentaro Yoshimatsu, Takeshi Nagasu, Katsuji Nakamura, Toshimitsu Uenaka, Atsumi Yamaguchi, Hiroshi Yoshino, Nozomu Koyanagi, Kyosuke Kito
  • Patent number: 5854274
    Abstract: Novel tricyclic heterocyclic sulfonamide derivatives and sulfonic ester derivatives which have excellent antitumor activity and are represented by the following general formula (I) and processes for producing the same are provided. The present sulfonamide derivatives or a sulfonic ester derivatives are represented by the following general formula (I): ##STR1## wherein G represents an aromatic 5- or 6-membered ring; L represents 0 or --N(R.sup.1)-- and --R.sup.1 represents hydrogen or lower alkyl; and M represents a tricyclic structure selected from among the following; ##STR2## rings A and B each represent an unsaturated 5- or 5 -membered ring; X represents N(R.sup.2) wherein R.sup.2 represents hydrogen or lower alkyl, or NHCO; Y represents 0, S(O).sub.n, C(R.sup.3) (R.sup.4), C(O), N(R.sup.5), CH(R.sup.6)CH(R.sup.7), C(R.sup.8).dbd.C(R.sup.9), N(R.sup.10) C(O), N.dbd.CR.sup.11), OCH(R.sup.12), S(O).sub.n CH(R.sup.13) or N(R.sup.14)CH(R.sup.15); Z represents nitrogen or C(R.sup.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: December 29, 1998
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Norihiro Ueda, Jun Niijima, Toru Haneda, Yoshihiko Kotake, Kentaro Yoshimatsu, Tatsuo Watanabe, Takeshi Nagasu, Naoko Tsukahara, Nozomu Koyanagi, Kyosuke Kitoh
  • Patent number: 5846969
    Abstract: A sulfonamide derivative or a sulfonic ester derivative represented by the following general formula (I): ##STR1## {G represents an aromatic 5- or 6-membered ring; L represents O or --N(R.sup.1)-- (R.sup.1 represents hydrogen or lower alkyl); and M represents ##STR2## rings A and B represent each an unsaturated 5- or 6-membered ring; Y represents O, S(O).sub.n, C(R.sup.3)(R.sup.4), C(O), N(R.sup.5), CH(R.sup.6)CH(R.sup.7), C(R.sup.8).dbd.C(R.sup.9), N(R.sup.10)C(O), N.dbd.C(R.sup.11), OCH(R.sup.12), S(O).sub.n CH(R.sup.13) or N(R.sup.14)CH(R.sup.15).
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: December 8, 1998
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Norihiro Ueda, Jun Niijima, Toru Haneda, Yoshihiko Kotake, Kentaro Yoshimatsu, Tatsuo Watanabe, Takeshi Nagasu, Naoko Tsukahara, Nozomu Koyanagi, Kyosuke Kitoh
  • Patent number: 5840918
    Abstract: Peptidomimetic compounds useful in the treatment of Ras-associated human cancers, and other conditions mediated by farnesylated or geranylgeranylated proteins; and synthetic intermediates thereof.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: November 24, 1998
    Assignee: Eisai Co., Ltd.
    Inventors: Michael D. Lewis, James J. Kowalczyk, Amy E. Christuk, Rulin Fan, Edmund M. Harrington, Xiaoning C. Sheng, Hu Yang, Ana Maria Garcia, Ieharu Hishinuma, Takeshi Nagasu, Kentaro Yoshimatsu
  • Patent number: 5834462
    Abstract: Novel tricyclic heterocyclic sulfonamide derivatives and sulfonic ester derivatives which have each an antitumor action and are represented by the following general formula (I) and processes for producing the same are provided. These compounds have each an excellent antitumor activity.A sulfonamide derivative or a sulfonic ester derivative represented by the following general formula (I): ##STR1## {G represents an aromatic 5- or 6-membered ring; L represents 0 or --N(R.sup.1)-- (R.sup.1 represents hydrogen or lower alky); and M represents a tricyclic structure selected from among the following ones; ##STR2## ?rings A and B represent each an unsaturated 5- or 6-membered ring; X represents N(R.sup.2), (wherein R.sup.2 represents hydrogen or lower alkyl), or NHCO;Y represents O, S(O).sub.n, C(R.sup.3)(R.sup.4), C(O), N(R.sup.5), CH(R.sup.6)CH(R.sup.7), C(R.sup.8).dbd.C(R.sup.9), N(R.sup.10)C(O), N.dbd.C(R.sup.11), OCH(R.sup.12), S(O).sub.n CH(R.sup.13) or N(R.sup.14)CH(R.sup.15);Z represents nitrogen or C(R.sup.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: November 10, 1998
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Norihiro Ueda, Jun Niijima, Toru Haneda, Yoshihiko Kotake, Kentaro Yoshimatsu, Tatsuo Watanabe, Takeshi Nagasu, Naoko Tsukahara, Nozomu Koyanagi, Kyosuke Kitoh
  • Patent number: 5767283
    Abstract: Novel heterobicyclic sulfonamide and sulfonic ester derivatives represented by the following general formula (I), which exhibit an antitumor activity and are lowly toxic, and processes for the preparation thereof.A sulfonamide derivative and a sulfonic ester derivative represented by the general formula (I) or a pharmacologically acceptable salt thereof: ##STR1## wherein variables A, W, X, B, C, Y, Z are as defined in the specification.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: June 16, 1998
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Takashi Owa, Tatsuo Okauchi, Kentaro Yoshimatsu, Naoko Sugi, Takeshi Nagasu, Yoichi Ozawa, Nozomu Koyanagi, Kyosuke Kito
  • Patent number: 5721246
    Abstract: Novel heterobicyclic sulfonamide and sulfonic ester derivatives represented by the following general formula(I), which exhibit an antitumor activity and are lowly toxic, and processes for the preparation thereof.A sulfonamide derivative and a sulfonic ester derivative represented by the general formula (I) or a pharmacologically acceptable salt thereof: ##STR1## wherein A represents a monocyclic or bicyclic aromatic ring which may be substituted; B represents a six-membered unsaturated hydrocarbon ring or a six-membered unsaturated heterocycle containing one nitrogen atom, each of which may be substituted; C represents a five-membered heterocycle containing one or two nitrogen atoms which may be substituted; W represents a single bond or a group represented by formula --CH.dbd.CH--; X represents a group represented by formula --N(R.sup.1)-- or oxygen; Y represents carbon or nitrogen; Z represents a group represented by formula --N(R.sup.2)-- or nitrogen; and R.sup.1 and R.sup.
    Type: Grant
    Filed: May 10, 1995
    Date of Patent: February 24, 1998
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Takashi Owa, Tatsuo Okauchi, Kentaro Yoshimatsu, Naoko Sugi, Takeshi Nagasu, Yoichi Ozawa, Nozomu Koyanagi, Kyosuke Kito
  • Patent number: 5610320
    Abstract: Sulfonamide compounds of the formula or pharmacologically acceptable salts thereof: ##STR1## wherein: R.sup.1 is a hydrogen atom, halogen atom, lower alkyl group, lower alkoxy group, hydroxyl group, nitro group, phenoxy group, cyano group, acetyl group, amino group or a protected amino group; R.sup.2 and R.sup.3 may be the same or different from each other and each is a hydrogen atom, halogen atom, lower alkyl group or lower alkoxy group; R.sup.4 and R.sup.7 may be the same or different from each other and each is a hydrogen atom or a lower alkyl group; R.sup.5 and R.sup.6 may be the same or different from each other and each is a hydrogen atom, halogen atom, lower alkoxy group, amino group or amino group substituted with a lower alkyl or a phenyl group; A is .dbd.CH--; B is .dbd.CH--; and E is selected from the group consisting of ##STR2## in which Q is an oxygen atom or a sulfur atom; and R.sup.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: March 11, 1997
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Norihiro Ueda, Hirovuki Sugumi, Jun Niijima, Yoshihiko Kotake, Toshimi Okada, Nozomu Koyanagi, Tatsuo Watanabe, Makoto Asada, Kentaro Yoshimatsu, Atsumi Iijima, Takeshi Nagasu, Kappei Tsukahara, Kyosuke Kitoh
  • Patent number: 5610304
    Abstract: Sulfonamide compounds of formula (I) or a pharmacologically acceptable salt thereof: ##STR1## exhibit excellent antitumor activity and low toxicity.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: March 11, 1997
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Norihiro Ueda, Hiroyuki Sugumi, Jun Niijima, Yoshihiko Kotake, Toshimi Okada, Nozomu Koyanagi, Tatsuo Watanabe, Makoto Asada, Kentaro Yoshimatsu, Atsumi Iijima, Takeshi Nagasu, Kappei Tsukahara, Kyosuke Kitoh
  • Patent number: 5434172
    Abstract: Sulfonamide derivatives of the general formula (I): ##STR1## wherein preferably R.sup.1 represents a lower alkoxy group, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 may be the same or different from one another and each represent a hydrogen atom, halogen atom or lower alkyl group, A and B may be the same or different from each other and each represent .dbd.N-- or .dbd.CH--, E represents an aromatic 6-membered cyclic group, which may have 1 or 2 nitrogen atoms in the ring, and be substituted with 1 to 3 substituents which may be the same or different from one another with the proviso that a combination of R.sup.1 which is a hydrogen atom, lower alkyl group, nitro group or amino group which may be protected, R.sup.2 and R.sup.3 which are each a hydrogen atom, A and B which are each .dbd.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: July 18, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Norihiro Ueda, Hiroyuki Sugumi, Jun Niijima, Yoshihiko Kotake, Toshimi Okada, Nozomu Koyanagi, Tatsuo Watanabe, Makoto Asada, Kentaro Yoshimatsu, Atsumi Iijima, Takeshi Nagasu, Kappei Tsukahara, Kyosuke Kitoh
  • Patent number: 5332751
    Abstract: Sulfonamide derivatives of the general formula (I): ##STR1## wherein preferably R.sup.1 represents a lower alkoxy group, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 may be the same or different from one another and each represent a hydrogen atom, halogen atom or lower alkyl group, A and B may be the same or different from each other and each represent .dbd.N-- or .dbd.CH--, E represents an aromatic 6-membered cyclic group, which may have 1 or 2 nitrogen atoms in the ring, and be substituted with 1 to 3 substituents which may be the same or different from one another with the proviso that a combination of R.sup.1 which is a hydrogen atom, lower alkyl group, nitro group or amino group which may be protected, R.sup.2 and R.sup.3 which are each a hydrogen atom, A and B which are each .dbd.
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: July 26, 1994
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Norihiro Ueda, Hiroyuki Sugumi, Jun Niijima, Yoshihiko Kotake, Toshimi Okada, Nozomu Koyanagi, Tatsuo Watanabe, Makoto Asada, Kentaro Yoshimatsu, Atsumi Iijima, Takeshi Nagasu, Kappei Tsukahara, Kyosuke Kitoh
  • Patent number: 5316933
    Abstract: A recombinant natural killer cell activating factor is disclosed, preferably having a peptide of the following amino acid sequence in its molecule. The invention provides a cDNA coding for a recombinant natural killer cell activating factor, a expression plasmid involving the cDNA, a host transformed with the plasmid, an antitumor agent containing the recombinant natural killer cell activating factor and a pharmaceutical composition which comprises a pharmacologically effective amount of the antitumor agent and a pharmacologically acceptable carrier.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: May 31, 1994
    Assignee: Eisai Co., Ltd.
    Inventors: Kentaro Yoshimatsu, Yukio Ohya, Yasushi Shikata, Isao Tanaka, Yoshikazu Hasegawa, Toshio Seto, Toshio Osawa
  • Patent number: 5292758
    Abstract: Sulfonamide derivatives of the general formula (I): ##STR1## wherein preferably R.sup.1 represents a lower alkoxy group, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 may be the same or different from one another and each represent a hydrogen atom, halogen atom or lower alkyl group, A and B may be the same or different from each other and each represent .dbd.N-- or .dbd.CH--, E represents an aromatic 6-membered cyclic group, which may have 1 or 2 nitrogen atoms in the ring, and be substituted with 1 to 3 substituents which may be the same or different from one another with the proviso that a combination of R.sup.1 which is a hydrogen atom, lower alkyl group, nitro group or amino group which may be protected, R.sup.2 and R.sup.3 which are each a hydrogen atom, A and B which are each .dbd.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: March 8, 1994
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Norihiro Ueda, Hiroyuki Sugumi, Jun Niijima, Yoshihiko Kotake, Toshimi Okada, Nozomu Koyanagi, Tatsuo Watanabe, Makoto Asada, Kentaro Yoshimatsu, Atsumi Iijima, Takeshi Nagasu, Kappei Tsukahara, Kyosuke Kitoh
  • Patent number: 5250549
    Abstract: Sulfonamide derivatives of the general formula (I): ##STR1## wherein preferably R.sup.1 represents a lower alkoxy group, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are as defined in the specification, A and B may be the same or different from each other and each represents .dbd.N-- or .dbd.CH--, E represents an aromatic 6-membered cyclic group, which may have 1 or 2 nitrogen atoms in the ring, and may be substituted with 1 to 3 substituents which may be the same or different from one another with the proviso that a combination of R.sup.1 which is a hydrogen atom, lower alkyl group, nitro group or amino group which may be protected, R.sup.2 and R.sup.3 which are each a hydrogen atom, A and B which are each .dbd.CH-- and E which is a phenyl group which may be substituted with 1 to 3 substituents G which may be the same or different from one another is excluded, or pharmacologically acceptance salts of them.
    Type: Grant
    Filed: August 8, 1991
    Date of Patent: October 5, 1993
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroshi Yoshino, Norihiro Ueda, Hiroyuki Sugumi, Jun Niijima, Yoshihiko Kotake, Toshimi Okada, Nozomu Koyanagi, Tatsuo Watanabe, Makoto Asada, Kentaro Yoshimatsu, Atsumi Iijima, Takeshi Nagasu, Kappei Tsukahara, Kyosuke Kitoh
  • Patent number: 5185431
    Abstract: A recombinant natural killer cell activating factor is disclosed, preferably having a peptide of the following amino acid sequence in its molecule. The invention provides a cDNA coding for a recombinant natural killer cell activating factor, a expression plasmid involving the cDNA, a host transformed with the plasmid, an antitumor agent containing the recombinant natural killer cell activating factor and a pharmaceutical composition which comprises a pharmacologically effective amount of the antitumor agent and a pharmacologically acceptable carrier.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: February 9, 1993
    Assignee: Eisai Co., Ltd.
    Inventors: Kentaro Yoshimatsu, Yukio Ohya, Yasushi Shikata, Isao Tanaka, Yoshikazu Hasegawa, Toshio Seto, Toshio Osawa