Patents by Inventor Yoshito Kishi
Yoshito Kishi 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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Publication number: 20200165183Abstract: Provided herein are methods for preparing ketone-containing organic molecules. The methods are based on novel iron/copper-mediated (“Fe/Cu-mediated”) coupling reactions. The Fe/Cu-mediated coupling reaction can be used in the preparation of complex molecules, such as halichondrins and analogs thereof. In particular, the Fe/Cu-mediated ketolization reactions described herein are useful in the preparation of intermediates en route to halichondrins.Type: ApplicationFiled: May 9, 2018Publication date: May 28, 2020Applicant: President and Fellows of Flarvard CollegeInventors: Yoshito Kishi, Kenzo Yahata, Vemula Praveen Kumar, Sudheer Babu Vaddela
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Publication number: 20200148698Abstract: The present invention provides novel Compound (1) having tumor vascular remodeling effect and/or anti-CAF (Cancer Associated Fibroblasts) activity, or a pharmaceutically acceptable salt thereof, optionally in a pharmaceutically acceptable and medical uses thereof.Type: ApplicationFiled: April 3, 2018Publication date: May 14, 2020Applicants: President and Fellows of Harvard College, Eisai R&D Management Co., LTDInventors: Yoshito Kishi, Kazunobu Kira, Ken Ito
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Patent number: 10633392Abstract: The present invention provides unified synthesis of the CI-CI 9 building blocks of halichondrins and analogs thereof using selective coupling of poly-halogenated nucleophiles in chromium-mediated coupling reactions. The present invention also provides a practical and efficient synthesis of C20-C38 building blocks of halichondrins and analogs thereof. Also provided herein are general methods of selective activation and coupling of poly-halogenated analogs with an aldehyde. The provided coupling reactions are selective for halo-enone and halo-acetylenic ketal over vinyl halide and halide attached to a sp hydridized carbon. The provided efficient selective coupling reactions can allow easy access to the CI-CI 9 building blocks and C20-C38 building blocks of halichondrins and analogs thereof with limited or no purification or separation of the intermediates.Type: GrantFiled: June 14, 2019Date of Patent: April 28, 2020Assignee: President and Fellows of Harvard CollegeInventors: Yoshito Kishi, Wuming Yan, Jingwei Li, Zhanjie Li, Kenzo Yahata
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Patent number: 10556910Abstract: The present invention provides halichondrin analogs, such as compounds of Formula (I). The compounds may bind to microtubule sites, thereby inhibiting microtubule dynamics. Also provided are methods of synthesis, pharmaceutical compositions, kits, methods of treatment, and uses that involve the compounds for treatment of a proliferative disease (e.g., cancer). Compounds of the present invention are particularly useful for the treatment of metastatic breast cancer, non-small cell lung cancer, prostate cancer, and sarcoma. The included methods of synthesis are useful for the preparation of compounds of Formula (I)-(III) along with naturally occurring halicondrins (e.g., halichondrin B & C, norhalichondrin A, B, & C, and homohalichondrin A, B, & C). Also included are methods for interconverting between the halichondrins, norhalichondrins, and homohalichondrins and their unnatural epimers at the C38 ketal stereocenter through the use of an acid-mediated equilibration.Type: GrantFiled: June 30, 2015Date of Patent: February 11, 2020Assignee: President and Fellows of Harvard CollegeInventors: Yoshito Kishi, Atsushi Ueda, Akihiko Yamamoto, Daisuke Kato
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Publication number: 20200031843Abstract: The present invention provides unified synthesis of the C1-C19 building blocks of halichondrins and analogs thereof using selective coupling of poly-halogenated nucleophiles in chromium-mediated coupling reactions. The present invention also provides a practical and efficient synthesis of C20-C38 building blocks of halichondrins and analogs thereof. Also provided herein are general methods of selective activation and coupling of poly-halogenated analogs with an aldehyde. The provided coupling reactions are selective for halo-enone and halo-acetylenic ketal over vinyl halide and halide attached to a sp hybridized carbon. The provided efficient selective coupling reactions can allow easy access to the C1-C19 building blocks and C20-C38 building blocks of halichondrins and analogs thereof with limited or no purification or separation of the intermediates.Type: ApplicationFiled: June 14, 2019Publication date: January 30, 2020Applicant: President and Fellows of Harvard CollegeInventors: Yoshito Kishi, Wuming Yan, Jingwei Li, Zhanjie Li, Kenzo Yahata
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Publication number: 20200002352Abstract: Provided herein are palladium-mediated coupling reactions useful in the preparation of ketone-containing organic molecules. The provided methods can be used for the preparation of natural products and pharmaceutical agents, including Eribulin, halichondrins, and analogs thereof. The present invention also provides novel halichondrin analogs which can be prepared via the palladium-mediated coupling reactions. The novel halichondrin analogs can be used in the prevention and/or treatment of diseases or conditions (e.g., proliferative diseases such as cancer).Type: ApplicationFiled: July 1, 2019Publication date: January 2, 2020Applicant: President and Fellows of Harvard CollegeInventors: Jung Hwa Lee, Yoshito Kishi, Ayumi Osawa, Zhanjie Li
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Patent number: 10392400Abstract: Provided herein are palladium-mediated coupling reactions useful in the preparation of ketone-containing organic molecules. The provided methods can be used for the preparation of natural products and pharmaceutical agents, including Eribulin, halichondrins, and analogs thereof. The present invention also provides novel halichondrin analogs which can be prepared via the palladium-mediated coupling reactions. The novel halichondrin analogs can be used in the prevention and/or treatment of diseases or conditions (e.g., proliferative diseases such as cancer).Type: GrantFiled: November 10, 2017Date of Patent: August 27, 2019Assignee: President and Fellows of Harvard CollegeInventors: Jung Hwa Lee, Yoshito Kishi, Ayumi Osawa, Zhanjie Li
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Patent number: 10344038Abstract: The present invention provides unified synthesis of the CI-CI 9 building blocks of halichondrins and analogs thereof using selective coupling of poly-halogenated nucleophiles in chromium-mediated coupling reactions. The present invention also provides a practical and efficient synthesis of C20-C38 building blocks of halichondrins and analogs thereof. Also provided herein are general methods of selective activation and coupling of poly-halogenated analogs with an aldehyde. The provided coupling reactions are selective for halo-enone and halo-acetylenic ketal over vinyl halide and halide attached to a sp hydridized carbon. The provided efficient selective coupling reactions can allow easy access to the CI-CI 9 building blocks and C20-C38 building blocks of halichondrins and analogs thereof with limited or no purification or separation of the intermediates.Type: GrantFiled: April 29, 2016Date of Patent: July 9, 2019Assignee: President and Fellows of Harvard CollegeInventors: Yoshito Kishi, Wuming Yan, Jingwei Li, Zhanjie Li, Kenzo Yahata
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Publication number: 20180230164Abstract: The present invention provides unified synthesis of the CI-CI 9 building blocks of halichondrins and analogs theoreof using selective coupling of poly-halogenated nucleophiles in chromium-mediated coupling reactions. The present invention also provides a practical and efficient synthesis of C20-C38 building blocks of halichondrins and analogs thereof. Also provided herein are general methods of selective activation and coupling of poly-halogenated analogs with an aldehyde. The provided coupling reactions are selective for halo-enone and halo-acetylenic ketal over vinyl halide and halide attached to a sp hydridized carbon. The provided efficient selective coupling reactions can allow easy access to the CI-CI 9 building blocks and C20-C38 building blocks of halichondrins and analogs thereof with limited or no purification or separation of the intermediates.Type: ApplicationFiled: April 29, 2016Publication date: August 16, 2018Applicant: President and Fellows of Harvard CollegeInventors: Yoshito Kishi, Wuming Yan, Jingwei Li, Jhanjie Li, Kenzo Yahata
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Publication number: 20180155361Abstract: Provided herein are palladium-mediated coupling reactions useful in the preparation of ketone-containing organic molecules. The provided methods can be used for the preparation of natural products and pharmaceutical agents, including Eribulin, halichondrins, and analogs thereof. The present invention also provides novel halichondrin analogs which can be prepared via the palladium-mediated coupling reactions. The novel halichondrin analogs can be used in the prevention and/or treatment of diseases or conditions (e.g., proliferative diseases such as cancer).Type: ApplicationFiled: November 10, 2017Publication date: June 7, 2018Inventors: Jung Hwa Lee, Yoshito Kishi
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Patent number: 9938288Abstract: The present invention provides novel Compound (1) having tumor vascular remodeling effect and/or anti-CAF (Cancer Associated Fibroblasts) activity, or a pharmaceutically acceptable salt thereof, optionally in a pharmaceutically acceptable carrier, and a medical uses thereof.Type: GrantFiled: November 15, 2017Date of Patent: April 10, 2018Assignees: President and Fellows of Harvard College, Eisai R&D Management Co., LTD.Inventors: Yoshito Kishi, Kazunobu Kira, Ken Ito
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Publication number: 20170137437Abstract: The present invention provides halichondrin analogs, such as compounds of Formula (I). The compounds may bind to microtubule sites, thereby inhibiting microtubule dynamics. Also provided are methods of synthesis, pharmaceutical compositions, kits, methods of treatment, and uses that involve the compounds for treatment of a proliferative disease (e.g., cancer). Compounds of the present invention are particularly useful for the treatment of metastatic breast cancer, non-small cell lung cancer, prostate cancer, and sarcoma. The included methods of synthesis are useful for the preparation of compounds of Formula (I)-(III) along with naturally occurring halicondrins (e.g., halichondrin B & C, norhalichondrin A, B, & C, and homohalichondrin A, B, & C). Also included are methods for interconverting between the halichondrins, norhalichondrins, and homohalichondrins and their unnatural epimers at the C38 ketal stereocenter through the use of an acid-mediated equilibration.Type: ApplicationFiled: June 30, 2015Publication date: May 18, 2017Applicant: President and Fellows of Harvard CollegeInventors: Yoshito Kishi, Atsushi Ueda, Akihiko Yamamoto, Daisuke Kato
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Patent number: 5436238Abstract: Novel chemical compounds that can be used to synthesize halichondrin B and norhalichondrin B, and related derivatives. The total synthesis of halichondrin B and norhalichondrin B is also disclosed.Type: GrantFiled: March 12, 1993Date of Patent: July 25, 1995Assignee: President and Fellows of Harvard CollegeInventors: Yoshito Kishi, Francis G. Fang, Craig J. Forsyth, Paul M. Scola, Suk K. Yoon
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Patent number: 5412080Abstract: Enterobactin analogs prepared from scyllo-inositol mono-orthoformate and having the following formula: ##STR1## wherein each X.sub.1, X.sub.2 and X.sub.3, independently, is H, C.sub.1-20 alkyl, phenyl, naphthyl, C.sub.7-20 aralkyl, or C.sub.7-20 alkaryl; Y is H, C.sub.1-20 alkyl, phenyl, naphthyl; C.sub.7-20 aralkyl, C.sub.7-20 alkaryl; --(C.sub.p H.sub.2p)--CH.sub.2 OH, --(C.sub.p H.sub.2p)--COOH or its salt, --(C.sub.p H.sub.2p)--NR.sub.1.R.sub.2 or its salt, or --(C.sub.p H.sub.2p)--N.sup.+ R.sub.1.R.sub.2.R.sub.3 ; in which p is 1-20 and each R.sub.1, R.sub.2 and R.sub.3, independently, is H or C.sub.1-5 alkyl; and m, n and o, independently, is 1-6; or the enantiomer thereof.Type: GrantFiled: August 25, 1993Date of Patent: May 2, 1995Assignee: President and Fellow of Harvard CollegeInventors: Yoshito Kishi, Bruno Tse
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Patent number: 5338865Abstract: Novel chemical compounds that can be used to synthesize halichondrin B and norhalichondrin B, and related derivatives, are described. The synthesis of halichondrin B and norhalichondrin B from these compounds also is described.Type: GrantFiled: January 29, 1993Date of Patent: August 16, 1994Assignee: President and Fellows of Harvard CollegeInventors: Yoshito Kishi, Francis G. Fang, Craig J. Forsyth, Paul M. Scola, Suk K. Yoon
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Patent number: 4536336Abstract: A new compound of the formula ##STR1## wherein R.sup.1 is a hydrogen atom, a hydroxyl group or an alkoxyl group of 1-4 carbon atoms and R.sup.2 is an ethyl group or acetyl group is now provided, which is an intermediate compound useful for synthesis of antitumor anthracyclines. This new anthracycline is produced by cyclization of a new compound of the formula ##STR2## wherein R.sup.1 is as defined above and TMS denotes a trimethylsilyl group, followed by decarboxylation of the cyclization product.Type: GrantFiled: December 23, 1983Date of Patent: August 20, 1985Assignee: Meiji Seika Kaisha, Ltd.Inventor: Yoshito Kishi
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Patent number: 4108861Abstract: A compound of the formula ##STR1## wherein R.sub.1 is lower alkyl, aryloxy(lower)alkyl or ar(lower)alkyl,R.sub.2 is lower alkyl,Coor.sub.3 is esterified carboxy selected from lower alkoxycarbonyl and ar(lower)alkoxycarbonyl,X is halogen selected from bromine and chlorine, andX' is hydrogen or halogen selected from bromine and chlorine,Said aryl and said ar each constituting phenyl, tolyl or xylyl, and a method of making it are disclosed.Type: GrantFiled: March 28, 1977Date of Patent: August 22, 1978Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Yoshito Kishi, Shinichi Nakatsuka, Hideo Tanino