Patents by Inventor Mitsunobu Hara
Mitsunobu Hara 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: 6861530Abstract: This invention relates to substituted piperidine derivatives having at least one six-membered ring substituent. The piperidine derivatives exhibit antitumor activity and are useful as pharmaceuticals such as an antitumor agent.Type: GrantFiled: July 6, 2001Date of Patent: March 1, 2005Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Shinji Nara, Rieko Nakatsu, Yutaka Kanda, Shiro Akinaga, Mitsunobu Hara, Jun Eishima, Timothy A. Grese, Douglas L. Gernert
-
Patent number: 6548536Abstract: Agents for inducing apoptosis comprising a tetrocarcin derivative represented by the following formula (I) or a salt thereof as an active ingredient (---- represents a single bond or a double bond; j and k represent 0 or 1; R1 to R3, R7 to R10 and R14 represent a hydrogen atom, a lower alkyl group and the like; R4, R11, R12, R13 and R15 to R18 represent a hydrogen atom, a hydroxyl group, a lower alkyl group and the like; R5 and R6 represents a hydrogen atom, a hydroxyl group, a lower alkyl group, a group represented by the following formula (B) (R32 represents a formyl group and the like, R33 to R35 represent a hydrogen atom, a hydroxyl group, a lower alkyl group and the like); R19 represents a hydroxyl group, a lower alkoxyl group, a lower alkanoyloxy group and the like). The agents are useful as medicaments for preventive and/or therapeutic treatment of diseases resulting from increased expression of Bcl-2 family proteins, for example, cancers, AIDS and the like.Type: GrantFiled: February 27, 2001Date of Patent: April 15, 2003Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Mitsunobu Hara, Takayuki Nakashima, Yutaka Kanda, Masami Hamano, Shun-ichi Ikeda, Yuko Uosaki, Yoko Takata, Junji Kanazawa
-
Patent number: 6492392Abstract: The present invention provides 2-piperidone compounds or pharmaceutically acceptable salts thereof, which have a potent activity of inhibiting the proliferation of tumor cells and thus are useful as medicaments, as well as antitumor agents containing these compounds. The 2-piperidone compound is represented by the following formula (I): wherein R1 represents —(CH2)nR1a {wherein n is an integer of from 0 to 5, and R1a represents amino, lower alkylamino, di(lower alkyl)amino, substituted or unsubstituted aryl, or a substituted or unsubstituted heterocyclic group}, and R2 and R3 independently represent lower alkyl which may be substituted by lower alkoxycarboyl; lower alkenyl, aralkyl or lower alkynyl which may be substituted by substituted or unsubstituted aryl or a substituted or unsubstituted heterocyclic group; substituted or unsubstituted aryl; or a substituted or unsubstituted heterocyclic group.Type: GrantFiled: January 12, 2000Date of Patent: December 10, 2002Assignees: Kyowa Hakko Kogyo Co., Ltd., Eli Lilly & Co.Inventors: Yutaka Kanda, Rieko Tanaka, Mitsunobu Hara, Jun Eishima, Shiro Akinaga, Tadashi Ashizawa
-
Publication number: 20020137770Abstract: This invention relates to piperidine derivatives having antitumor activity and useful as pharmaceuticals such as an antitumor agent.Type: ApplicationFiled: July 6, 2001Publication date: September 26, 2002Inventors: Shinji Nara, Rieko Nakatsu, Yutaka Kanda, Shiro Akinaga, Mitsunobu Hara, Jun Eishima, Timothy A. Grese, Douglas L. Gernert
-
Patent number: 6407087Abstract: UCF116 derivatives represented by formula (I): wherein Q represents and R represents hydrogen, C(═O)R1a (wherein R1a represents methyl, ethyl, propyl, isopropyl, 2,2-dimethylpropyl, pentyl, alkyl having 6 to 10 carbon atoms, 1-propenyl, isopropenyl, 2-methyl-1-propenyl, substituted or unsubstituted alicyclic alkyl having 3 to 5 carbon atoms, substituted or unsubstituted aryl, substituted or unsubstituted aralkyl, a substituted or unsubstituted heterocyclic group, substituted or unsubstituted aralkyloxy, or substituted lower alkyl), C(═X)NHR1b (wherein X represents an oxygen or sulfur atom, and R1b represents substituted or unsubstituted lower alkyl, substituted or unsubstituted alicyclic alkyl, substituted or unsubstituted lower alkoxycarbonyl, substituted or unsubstituted aryl, substituted or unsubstituted aralkyl, or a substituted or unsubstituted heterocyclic group), or SO2R1c (wherein R1c represents substituted or unsubstituted lower alkyl, substituted or unsType: GrantFiled: June 27, 2000Date of Patent: June 18, 2002Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Mitsunobu Hara, Shiro Akinaga, Yutaka Kanda, Timothy S. Powers, David A. Johnson
-
Publication number: 20020022598Abstract: Agents for inducing apoptosis comprising a tetrocarcin derivative represented by the following formula (I) or a salt thereof as an active ingredient (- - - - represents a single bond or a double bond; j and k represent 0 or 1; R1 to R3, R7 to R10 and R14 represent a hydrogen atom, a lower alkyl group and the like; R4, R11, R12, R13 and R15 to R18 represent a hydrogen atom, a hydroxyl group, a lower alkyl group and the like; R5 and R6 represents a hydrogen atom, a hydroxyl group, a lower alkyl group, a group represented by the following formula (B) (R32 represents a formyl group and the like, R33 to R35 represent a hydrogen atom, a hydroxyl group, a lower alkyl group and the like); R19 represents a hydroxyl group, a lower alkoxyl group, a lower alkanoyloxy group and the like). The agents are useful as medicaments for preventive and/or therapeutic treatment of diseases resulting from increased expression of Bcl-2 family proteins, for example, cancers, AIDS and the like.Type: ApplicationFiled: February 27, 2001Publication date: February 21, 2002Applicant: KYOWA HAKKO KOGYO CO., LTDInventors: Mitsunobu Hara, Takayuki Nakashima, Yutaka Kanda, Masami Hamano, Shun-ichi Ikeda, Yuko Uosaki, Yoko Takata, Junji Kanazawa
-
Patent number: 5686606Abstract: The present invention relates to UCF116 compounds represented by the formula (I) : ##STR1## wherein an example of Q.sup.1 representation is ##STR2## and an example of Q.sup.2 representation is ##STR3## which have antibacterial and antitumor activity and are useful as antibacterial and antitumor agents.Type: GrantFiled: July 12, 1996Date of Patent: November 11, 1997Assignee: Kyowa Hakko Kogyo, Co., Ltd.Inventors: Tamio Mizukami, Mikito Itoh, Mitsunobu Hara, Hirofumi Nakano, Yumiko Aotani, Keiko Ochiai, Shiro Akinaga, Akira Mihara
-
Patent number: 5106868Abstract: Compounds UCF1 and derivatives thereof exhibit anti-bacterial and anti-tumor activities and may be used for the preparation of anti-bacterial and anti-tumor agents.Compounds UCF1 may be produced by fermentation of a microorganism of the genus Streptomyces capable of producing compounds UCF1, preferably Streptomyces sp. UOF1 (FERM BP-2844) and recovering the desired compounds from the cultured broth.The compounds UCF1 have the formula ##STR1## wherein R represents either ##STR2## The compounds may be oxidized to obtain derivatives of formula ##STR3## which exhibit similar pharmacological activities.Type: GrantFiled: May 7, 1991Date of Patent: April 21, 1992Assignee: Kyowa Hakko Kogyo Kabushiki KaishaInventors: Hirofumi Nakano, Mitsunobu Hara, Yutaka Saito, Yoji Ikuina, Toshimitsu Takiguchi, Masami Okabe
-
Patent number: 5082857Abstract: The present invention relates to a compound designated "DC114-C" having excellent anti-bacterial and anti-tumor activities. This compound may be obtained by fermentation of a microorganism of the genus Streptomyces, preferably Streptomyces sp. DO-114 (FERM BP-2641).Type: GrantFiled: November 13, 1990Date of Patent: January 21, 1992Assignee: Kyowa Hakko Kogyo Kabushiki KaishaInventors: Hirofumi Nakano, Mitsunobu Hara, Yohichi Uosaki, Isao Kawamoto, Keiiechi Takahashi, Katsushige Gomi
-
Patent number: 5066817Abstract: Disclosed are DC115A compounds represented by the following general formula: ##STR1## wherein R represents ethyl, propyl or 1-propenyl, and which have antibacterial and anti-tumor activity. DC115A compounds are produced by culturing a microorganism belonging to the genus Streptomyces.Type: GrantFiled: April 30, 1990Date of Patent: November 19, 1991Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Hirofumi Nakano, Mitsunobu Hara, Tsuyoshi Mokudai, Isao Kawamoto, Mayumi Yoshida, Eiji Kobayashi
-
Patent number: 4999196Abstract: A novel compound, DC-107, is produced by culturing a microorganism belonging to the genus Streptomyces. It is useful as a medicine because of its antibacterial and anti-tumor activity.Type: GrantFiled: March 29, 1989Date of Patent: March 12, 1991Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Hirofumi Nakano, Mitsunobu Hara, Isami Takahashi, Kozo Asano, Takao Iida, Makoto Morimoto
-
Patent number: 4914198Abstract: Novel substance UCY1003 produced by culturing of a microorganism has the following chemical structure and analgesic, hypotensive and antifungal activities: ##STR1##Type: GrantFiled: December 29, 1986Date of Patent: April 3, 1990Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Hirofumi Nakano, Mitsunobu Hara, Yoshinori Yamashita, Isao Kawamoto, Katsuhiko Ando, Hiroshi Sano, Toru Yasuzawa, Katsuichi Shuto