Patents by Inventor Takuo Tsukuda
Takuo Tsukuda 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).
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Patent number: 8648054Abstract: The present invention relates to the use of nucleoside derivatives of formula Ia wherein the symbols are as defined in the specification, and of pharmaceutically acceptable salts thereof and to pharmaceutical compositions containing such compounds.Type: GrantFiled: April 12, 2013Date of Patent: February 11, 2014Assignee: Roche Palo Alto LLCInventors: Rene Robert Devos, Christopher John Hobbs, Wen-Rong Jiang, Joseph Armstrong Martin, John Herbert Merrett, Isabel Najera, Nobuo Shimma, Takuo Tsukuda
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Publication number: 20130237491Abstract: The present invention relates to the use of nucleoside derivatives of formula Ia wherein the symbols are as defined in the specification, and of pharmaceutically acceptable salts thereof and to pharmaceutical compositions containing such compounds.Type: ApplicationFiled: April 12, 2013Publication date: September 12, 2013Applicant: Roche Palo Alto LLCInventors: Rene Robert Devos, Christopher John Hobbs, Wen-Rong Jiang, Joseph Armstrong Martin, John Herbert Merrett, Isabel Najera, Nobuo Shimma, Takuo Tsukuda
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Patent number: 8362236Abstract: The present invention provides a novel class of compounds that have the activity of inhibiting HSP90 enzyme and are useful as anti-cancer agents or such, and compounds that are useful as synthetic intermediates thereof. Specifically, the present invention provides compounds represented by the following formula (1), and pharmaceutically acceptable salts thereof: wherein X, R1, R2, R3, R4, R5, R6, R7, L1, L2, and L3 are as defined in the specification.Type: GrantFiled: February 29, 2008Date of Patent: January 29, 2013Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Nobuo Shimma, Takuo Tsukuda, Hiroshi Koyano, Atsushi Suda, Tadakatsu Hayase, Kihito Hada, Ken-Ichi Kawasaki, Susumu Komiyama, Naomi Ono, Toshikazu Yamazaki, Ryoichi Saitoh, Masami Kohchi, Kiyoshi Hasegawa
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Patent number: 8193351Abstract: Compounds represented by formula (1) shown below, pharmaceutically acceptable salts thereof, and pharmaceutical compositions comprising such compounds are provided.Type: GrantFiled: May 25, 2007Date of Patent: June 5, 2012Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Takuo Tsukuda, Ken-Ichi Kawasaki, Susumu Komiyama, Yoshiaki Isshiki, Yasuhiko Shiratori, Kiyoshi Hasegawa, Takaaki Fukami, Takaaki Miura, Naomi Ono, Toshikazu Yamazaki, Young-Jun Na, Dong-Oh Yoon, Sung-Jin Kim
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Publication number: 20120034184Abstract: The present invention relates to the use of nucleoside derivatives of formula I wherein B signifies a 9-purinyl residue B1 of formula or a 1-pyrimidyl residue B2 of formula wherein the symbols are as defined in the specification, and of pharmaceutically acceptable salts thereof; for the treatment of diseases mediated by the Hepatitis C Virus (HCV), for the preparation of a medicament for such treatment and to pharmaceutical compositions containing such compounds.Type: ApplicationFiled: October 17, 2011Publication date: February 9, 2012Inventors: Rene Robert Devos, Christopher John Hobbs, Wen Rong Jiang, Joseph Armstrong Martin, John Herbert Merrett, Isabel Najera, Nobuo Shimma, Takuo Tsukuda
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Patent number: 8071567Abstract: The present invention relates to the use of nucleoside derivatives of formula Ia wherein the symbols are as defined in the specification, and of pharmaceutically acceptable salts thereof and to pharmaceutical compositions containing such compounds.Type: GrantFiled: September 16, 2009Date of Patent: December 6, 2011Assignee: Roche Palo Alto LLCInventors: Rene Robert Devos, Christopher John Hobbs, Wen Rong Jiang, Joseph Armstrong Martin, John Herbert Merrett, Isabel Najera, Nobuo Shimma, Takuo Tsukuda
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Patent number: 8030496Abstract: A method whereby a compound having HCV replication inhibitory activity and desired optical activity can be synthesized selectively and at high yield in a small number of steps by using a compound having a specific chiral auxiliary as a starting compound is provided. A compound represented by the formula (1-8): wherein Y represents a group represented by the following formula: Q represents a protected carbonyl group; D represents —(CH2)m—R?, etc.; and n represents an integer of 0 to 10.Type: GrantFiled: February 4, 2010Date of Patent: October 4, 2011Assignee: Chugai Seiyaki Kabushiki KaishaInventors: Tatsuya Kato, Nobuaki Kimura, Akemi Mizutani, Toshihiko Makino, Kenichi Kawasaki, Hiroshi Fukuda, Susumu Komiyama, Takuo Tsukuda
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Patent number: 7915232Abstract: The present invention relates to the use of nucleoside derivatives of formula Ia wherein the symbols are as defined in the specification, and of pharmaceutically acceptable salts thereof which inhibit HCV polymerase and are useful for treating a patient suffering from a HCV infection and to pharmaceutical compositions containing such compounds.Type: GrantFiled: September 14, 2009Date of Patent: March 29, 2011Assignee: Roche Palo Alto LLCInventors: Joseph Armstrong Martin, John Herbert Merrett, Isabel Najera, Rene Robert Devos, Christopher John Hobbs, Wen Rong Jiang, Nobuo Shimma, Takuo Tsukuda
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Patent number: 7897783Abstract: A method whereby a compound having HCV replication inhibitory activity and desired optical activity can be synthesized selectively and at high yield in a small number of steps by using a compound having a specific chiral auxiliary as a starting compound is provided. A compound represented by the formula (1-8): [wherein Y represents a group represented by the following formula: Q represents a protected carbonyl group; D represents —(CH2)m—R?, etc.; and n represents an integer of 0 to 10].Type: GrantFiled: February 16, 2006Date of Patent: March 1, 2011Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Tatsuya Kato, Nobuaki Kimura, Akemi Mizutani, Toshihiko Makino, Kenichi Kawasaki, Hiroshi Fukuda, Susumu Komiyama, Takuo Tsukuda
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Publication number: 20100274026Abstract: The object of the present invention is to provide a pharmaceutical composition for preventing or treating viral infectious diseases. The compounds of the present invention have extremely potent anti-HCV activity and HCV growth inhibitory effects, and since they also only demonstrate mild cytotoxicity in vivo, a pharmaceutical composition containing the compound of the present invention is extremely useful as an anti-HCV preventive/therapeutic agent.Type: ApplicationFiled: July 6, 2010Publication date: October 28, 2010Inventors: Masahiro Aoki, Hideyuki Kato, Masayuki Sudoh, Takuo Tsukuda, Miyako Masubuchi, Kenichi Kawasaki
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Patent number: 7776918Abstract: The object of the present invention is to provide a pharmaceutical composition for preventing or treating viral infectious diseases. The compounds of the present invention have extremely potent anti-HCV activity and HCV growth inhibitory effects, and since they also only demonstrate mild cytotoxicity in vivo, a pharmaceutical composition containing the compound of the present invention is extremely useful as an anti-HCV preventive/therapeutic agent.Type: GrantFiled: February 12, 2004Date of Patent: August 17, 2010Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Masahiro Aoki, Hideyuki Kato, Masayuki Sudoh, Takuo Tsukuda, Miyako Masubuchi, Kenichi Kawasaki
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Publication number: 20100152457Abstract: A method whereby a compound having HCV replication inhibitory activity and desired optical activity can be synthesized selectively and at high yield in a small number of steps by using a compound having a specific chiral auxiliary as a starting compound is provided. A compound represented by the formula (1-8): wherein Y represents a group represented by the following formula: Q represents a protected carbonyl group; D represents —(CH2)m—R?, etc.; and n represents an integer of 0 to 10.Type: ApplicationFiled: February 4, 2010Publication date: June 17, 2010Inventors: Tatsuya Kato, Nobuaki Kimura, Akemi Mizutani, Toshihiko Makino, Kenichi Kawasaki, Hiroshi Fukuda, Susumu Komiyama, Takuo Tsukuda
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Publication number: 20100152456Abstract: A method whereby a compound having HCV replication inhibitory activity and desired optical activity can be synthesized selectively and at high yield in a small number of steps by using a compound having a specific chiral auxiliary as a starting compound is provided. A compound represented by the formula (1-8): wherein Y represents a group represented by the following formula: Q represents a protected carbonyl group; D represents —(CH2)m—R?, etc.; and n represents an integer of 0 to 10.Type: ApplicationFiled: February 4, 2010Publication date: June 17, 2010Inventors: Tatsuya Kato, Nobuaki Kimura, Akemi Mizutani, Toshihiko Makino, Kenichi Kawasaki, Hiroshi Fukuda, Susumu Komiyama, Takuo Tsukuda
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Publication number: 20100056510Abstract: The present invention provides a novel class of compounds that have the activity of inhibiting HSP90 enzyme and are useful as anti-cancer agents or such, and compounds that are useful as synthetic intermediates thereof. Specifically, the present invention provides compounds represented by the following formula (1), and pharmaceutically acceptable salts thereof: wherein X, R1, R2, R3, R4, R5, R6, R7, L1, L2, and L3 are as defined in the specification.Type: ApplicationFiled: February 29, 2008Publication date: March 4, 2010Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHAInventors: Nobuo Shimma, Takuo Tsukuda, Hiroshi Koyano, Atsushi Suda, Tadakatsu Hayase, Kihito Hada, Ken-ichi Kawasaki, Susumu Komiyama, Naomi Ono, Toshikazu Yamazaki, Ryoichi Saitoh, Masami Kohchi, Kiyoshi Hasegawa
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Publication number: 20100003213Abstract: The present invention relates to the use of nucleoside derivatives of formula Ia wherein the symbols are as defined in the specification, and of pharmaceutically acceptable salts thereof and to pharmaceutical compositions containing such compounds.Type: ApplicationFiled: September 16, 2009Publication date: January 7, 2010Inventors: Rene Robert Devos, Christopher John Hobbs, Wen Rong Jiang, Joseph Armstrong Martin, John Herbert Merrett, Isabel Najera, Nobuo Shimma, Takuo Tsukuda
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Publication number: 20100004192Abstract: The present invention relates to the use of nucleoside derivatives of formula Ia wherein the symbols are as defined in the specification, and of pharmaceutically acceptable salts thereof and to pharmaceutical compositions containing such compounds.Type: ApplicationFiled: September 14, 2009Publication date: January 7, 2010Inventors: Joseph Armstrong Martin, John Herbert Merrett, Isabel Najera, Rene Robert Devos, Christopher John Hobbs, Wen Rong Jiang, Nobuo Shimma, Takuo Tsukuda
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Patent number: 7608601Abstract: The present invention relates to the use of nucleoside derivatives of formula I wherein B signifies a 9-purinyl residue B1 of formula or a 1-pyrimidyl residue B2 of formula wherein the symbols are as defined in the specification, and of pharmaceutically acceptable salts thereof; for the treatment of diseases mediated by the Hepatitis C Virus (HCV), for the preparation of a medicament for such treatment and to pharmaceutical compositions containing such compounds.Type: GrantFiled: July 15, 2004Date of Patent: October 27, 2009Assignee: Roche Palo Alto LLCInventors: Rene Robert Devos, Christopher John Hobbs, Wen Rong Jiang, Joseph Armstrong Martin, John Herbert Merrett, Isabel Najera, Nobuo Shimma, Takuo Tsukuda
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Publication number: 20090247524Abstract: Compounds represented by formula (1) shown below, pharmaceutically acceptable salts thereof, and pharmaceutical compositions comprising such compounds are provided.Type: ApplicationFiled: May 25, 2007Publication date: October 1, 2009Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHAInventors: Takuo Tsukuda, Ken-ichi Kawasaki, Susumu Komiyama, Yoshiaki Isshiki, Yasuhiko Shiratori, Kiyoshi Hasegawa, Takaaki Fukami, Takaaki Miura, Naomi Ono, Toshikazu Yamazaki, Young-Jun Na, Dong-Oh Yoon, Sung-Jin Kim
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Publication number: 20080293950Abstract: A method whereby a compound having HCV replication inhibitory activity and desired optical activity can be synthesized selectively and at high yield in a small number of steps by using a compound having a specific chiral auxiliary as a starting compound is provided. A compound represented by the formula (1-8): [wherein Y represents a group represented by the following formula: Q represents a protected carbonyl group; D represents —(CH2)m—R?, etc.; and n represents an integer of 0 to 10].Type: ApplicationFiled: February 16, 2006Publication date: November 27, 2008Inventors: Tatsuya Kato, Nobuaki Kimura, Akemi Mizutani, Toshihiko Makino, Kenichi Kawasaki, Hiroshi Fukuda, Susumu Komiyama, Takuo Tsukuda
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Patent number: 7378446Abstract: The object of the present invention is to provide a compound useful for the prevention and treatment of viral infectious diseases, and particularly liver diseases caused by HCV infection due to its having a high degree of replication inhibitory activity against HCV, its production method, an intermediate compound useful for its production and a pharmaceutical composition containing these compounds, and the present invention relates to a compound represented by the formula (I): (wherein A represents —(CH2)n—, etc.; B represents —(C?O)—, etc.; D represents —(CH2)m—R?, etc.; E represents a hydrogen atom, etc.; G represents —(CH2)p-J, etc.; bond Q represents a single bond or double bond; and R1, R2 and R3 may be the same or different and each represent a hydrogen atom, etc.), a prodrug thereof or a pharmaceutically acceptable salt thereof.Type: GrantFiled: July 9, 2004Date of Patent: May 27, 2008Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Masayuki Sudoh, Takuo Tsukuda, Miyako Masubuchi, Kenichi Kawasaki, Takeshi Murata, Fumio Watanabe, Hiroshi Fukuda, Susumu Komiyama, Tadakatsu Hayase