Patents by Inventor Yongda Zhang
Yongda Zhang 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: 20250115629Abstract: This invention relates to compounds of Formula (I) useful as synthons for a general synthetic method for making chiral phosphorothioates, to their preparation and to their use in a robust large scale process for making P-chiral phosphorothioates.Type: ApplicationFiled: March 16, 2022Publication date: April 10, 2025Inventors: Yongda ZHANG, Linglin WU
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Publication number: 20240199569Abstract: This invention relates to an efficient and enantioselective synthesis of the spiro-compounds of formula (1) as common intermediate, featuring an asymmetric introduction of the all-carbon quaternary centre in high selectivity and a very efficient one-pot procedure for the C2 elongation to generate the spiro-structure. For the all-carbon quaternary centre, a Tsuji-Trost asymmetric allylic alkylation (AAA) process was designed to develop a sustainable procedure with very low catalyst loading, thereby also facilitating the Pd content control in the product, under practically solvent free conditions. Furthermore, multiple synthetic transformations in a one-pot procedure were implemented by using a one-pot procedure either in form of a three-transformation sequence comprising Hydroboration-Alkylation-Dieckmann Condensation to compound of formula (1) or in form of a five-transformation sequence comprising Hydroboration-Alkylation-Dieckmann Condensation-Hydrolysis-Decarboxylation to compound of formula (9).Type: ApplicationFiled: November 29, 2023Publication date: June 20, 2024Inventors: Yongda ZHANG, Eugene CHONG, Jonathan Timothy REEVES, Jada A.H. WHITE, Zhen LEI
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Patent number: 10544177Abstract: This invention relates to novel phosphorous ligands useful for organic transformations. Methods of making and using the ligands in organic synthesis are described. The invention also relates to processes for preparing the novel ligands.Type: GrantFiled: January 10, 2019Date of Patent: January 28, 2020Assignee: Boehringer Ingelheim International GmbHInventors: Jean-Nicolas Desrosiers, Daniel Robert Fandrick, Nizar Haddad, Guisheng Li, Nitinchandra D. Patel, Bo Qu, Sonia Rodriguez, Chris Hugh Senanayake, Joshua Daniel Sieber, Zhulin Tan, Xiao-Jun Wang, Nathan K. Yee, Li Zhang, Yongda Zhang
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Publication number: 20190144475Abstract: This invention relates to novel phosphorous ligands useful for organic transformations. Methods of making and using the ligands in organic synthesis are described. The invention also relates to processes for preparing the novel ligands.Type: ApplicationFiled: January 10, 2019Publication date: May 16, 2019Inventors: Jean-Nicolas DESROSIERS, Daniel Robert FANDRICK, NIZAR HADDAD, Guisheng LI, Nitinchandra D. PATEL, Bo QU, Sonia RODRIGUEZ, Chris Hugh SENANAYAKE, Joshua Daniel SIEBER, Zhulin TAN, Xiao-Jun WANG, Nathan K. YEE, Li ZHANG, Yongda ZHANG
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Patent number: 10221203Abstract: This invention relates to novel phosphorous ligands useful for organic transformations. Methods of making and using the ligands in organic synthesis are described. The invention also relates to processes for preparing the novel ligands.Type: GrantFiled: December 6, 2017Date of Patent: March 5, 2019Assignee: Boehringer Ingelheim International GmbhInventors: Jean-Nicolas Desrosiers, Daniel Robert Fandrick, Nizar Haddad, Guisheng Li, Nitinchandra D. Patel, Bo Qu, Sonia Rodriguez, Chris Hugh Senanayake, Joshua Daniel Sieber, Zhulin Tan, Xiao-Jun Wang, Nathan K. Yee, Li Zhang, Yongda Zhang
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Patent number: 10196413Abstract: This invention relates to novel phosphorous ligands useful for organic transformations. Methods of making and using the ligands in organic synthesis are described. The invention also relates to processes for preparing the novel ligands.Type: GrantFiled: December 5, 2017Date of Patent: February 5, 2019Assignee: Boehringer Ingelheim International GmbHInventors: Soumik Biswas, Jean-Nicolas Desrosiers, Kendricks Lao, Hari P. R. Mangunuru, Bo Qu, Sonia Rodriguez, Chris Hugh Senanayake, Joshua Daniel Sieber, Xiao-Jun Wang, Nathan K. Yee, Yongda Zhang
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Publication number: 20180155377Abstract: This invention relates to novel phosphorous ligands useful for organic transformations. Methods of making and using the ligands in organic synthesis are described. The invention also relates to processes for preparing the novel ligands.Type: ApplicationFiled: December 5, 2017Publication date: June 7, 2018Inventors: Soumik Biswas, Jean-Nicolas Desrosiers, Kendricks Lao, Hari P.R. Mangunuru, Bo Qu, Sonia Rodriguez, Chris Hugh Senanayake, Joshua Daniel Sieber, Xiao-Jun Wang, Nathan K. Yee, Yongda Zhang
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Publication number: 20180155375Abstract: This invention relates to novel phosphorous ligands useful for organic transformations. Methods of making and using the ligands in organic synthesis are described. The invention also relates to processes for preparing the novel ligands.Type: ApplicationFiled: December 6, 2017Publication date: June 7, 2018Inventors: Jean-Nicolas Desrosiers, Daniel Robert Fandrick, Nizar Haddad, Guisheng Li, Nitinchandra D. Patel, Bo Qu, Sonia Rodriguez, Chris Hugh Senanayake, Joshua Daniel Sieber, Zhulin Tan, Xiao-Jun Wang, Nathan K. Yee, Li Zhang, Yongda Zhang
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Patent number: 8975447Abstract: Disclosed are a process and catalysts useful for carrying out asymmetric methlyallylations. The catalysts used in the invention have the formula (IV): wherein X1, X2, R3 and R4 are as defined herein. Compounds made by the process of the invention can be used to prepare pharmaceutically active compounds such as 11-?-hydroxysteroid hydrogenase type 1 (11-?-HSD1) inhibitors including 1,3-disubstituted oxazinan-2-ones.Type: GrantFiled: March 6, 2012Date of Patent: March 10, 2015Assignee: Boehringer Ingelheim International GmbHInventors: Wenjie Li, Zhi-Hui Lu, Chris Hugh Senanayake, Yongda Zhang
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Patent number: 8916701Abstract: Disclosed is a process for making diastereomeric compound of the formula (I): wherein m, n and R1 to R4 are as defined herein. The process of the invention provides the compound of formula (I) in high yield and substantially free of the corresponding diastereomers. The compounds of formula (I) prepared by the process of the invention are useful for making pharmaceutically active compounds such as 11-?-hydroxysteroid hydrogenase type 1 (11-?-HSD1) inhibitors.Type: GrantFiled: December 15, 2011Date of Patent: December 23, 2014Assignee: Boehringer Ingelheim International GmbHInventors: Daniel Robert Fandrick, Zhi-Hui Lu, Diana Reeves, Jonathan Reeves, Chris Hugh Senanayake, Jinhua Jeff Song, Yongda Zhang
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Publication number: 20140171692Abstract: Disclosed are a process and catalysts useful for carrying out asymmetric methlyallylations. The catalysts used in the invention have the formula (IV): wherein X1, X2, R3 and R4 are as defined herein. Compounds made by the process of the invention can be used to prepare pharmaceutically active compounds such as 11-?-hydroxysteroid hydrogenase type 1 (11-?-HSD1) inhibitors including 1,3-disubstituted oxazinan-2-ones.Type: ApplicationFiled: March 6, 2012Publication date: June 19, 2014Applicant: BOEHRINGER INGELHEIM INTERNATIONAL GMBHInventors: Wenjie Li, Zhi-Hui Lu, Chris Hugh Senanayake, Yongda Zhang
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Publication number: 20140135493Abstract: Disclosed is a process for making diastereomeric compound of the formula (I): wherein m, n and R1 to R4 are as defined herein. The process of the invention provides the compound of formula (I) in high yield and substantially free of the corresponding diastereomers. The compounds of formula (I) prepared by the process of the invention are useful for making pharmaceutically active compounds such as 11-?-hydroxysteroid hydrogenase type 1 (11-?-HSD1) inhibitors.Type: ApplicationFiled: December 15, 2011Publication date: May 15, 2014Applicant: BOEHRINGER INGELHEIM INTERNATIONAL GMBHInventors: Daniel Robert Fandrick, Zhi-Hui Lu, Diana Crimhilda Reeves, Jonathan Timothy Reeves, Chris Hugh Senanayake, Jinhua J. Song, Yongda Zhang
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Publication number: 20140094610Abstract: The present invention is directed to an improved process for the preparation of Compounds of Formula (I) or salts thereof which are useful in the treatment of HIV infection. In particular, the present invention is directed to an improved process for the preparation of (2S)-2-tert-butoxy-2-(4-(2,3-dihydropyrano[4,3,2-de]quinolin-7-yl)-2-methylquinolin-3-yl)acetic acid or salt thereof which is useful in the treatment of HIV infection.Type: ApplicationFiled: October 3, 2013Publication date: April 3, 2014Inventors: Wenjie LI, Philomen DECROOS, Keith R. FANDRICK, Joe Ju GAO, Nizar HADDAD, Zhi-Hui LU, Bo QU, Sonia RODRIGUEZ, Chris H. SENANAYAKE, Yongda ZHANG, Wenjun TANG
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Publication number: 20140094609Abstract: The present invention is directed to an improved process for the preparation of Compounds of Formula (I), which are useful in the treatment of HIV infection. In particular, the present invention is directed to an improved process for the preparation of (2S)-2-tert-butoxy-2-(4-(2,3-dihydropyrano[4,3,2-de]quinolin-7-yl)-2-methylquinolin-3-yl)acetic acid, which is useful in the treatment of HIV infection.Type: ApplicationFiled: October 2, 2013Publication date: April 3, 2014Inventors: Brandon H. Brown, Xiang Wang, Keith R. Fandrick, Joe Ju Gao, Nizar Haddad, Serge R. Landry, Wenjie Li, Zhi-Hui Lu, Bo Qu, Diana C. Reeves, Carl Thibeault, Yongda Zhang
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Patent number: 8487094Abstract: Disclosed are syntheses of 11?-HSD1 inhibitors and corresponding intermediates that are promising for the treatment of a variety of disease states including diabetes, metabolic syndrome, obesity, glucose intolerance, insulin resistance, hyperglycemia, hypertension, hypertension-related cardiovascular disorders, hyperlipidemia, deleterious gluco-corticoid effects on neuronal function (e.g. cognitive impairment, dementia, and/or depression), elevated intra-ocular pressure, various forms of bone disease (e.g., osteoporosis), tuberculosis, leprosy (Hansen's disease), psoriasis, and impaired wound healing (e.g., in patients that exhibit impaired glucose tolerance and/or type 2 diabetes).Type: GrantFiled: July 23, 2009Date of Patent: July 16, 2013Assignee: Boehringer Ingelheim International GmbHInventors: Keith R. Fandrick, Joe Ju Gao, Wenjie Li, Zhi-Hui Lu, Yongda Zhang
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Publication number: 20110269957Abstract: Disclosed are syntheses of 11?-HSD1 inhibitors and corresponding intermediates that are promising for the treatment of a variety of disease states including diabetes, metabolic syndrome, obesity, glucose intolerance, insulin resistance, hyperglycemia, hypertension, hypertension-related cardiovascular disorders, hyperlipidemia, deleterious gluco-corticoid effects on neuronal function (e.g. cognitive impairment, dementia, and/or depression), elevated intra-ocular pressure, various forms of bone disease (e.g., osteoporosis), tuberculosis, leprosy (Hansen's disease), psoriasis, and impaired wound healing (e.g., in patients that exhibit impaired glucose tolerance and/or type 2 diabetes).Type: ApplicationFiled: July 23, 2009Publication date: November 3, 2011Applicant: BOEHRINGER INGELHEIM INTERNATIONAL GMBHInventors: Keith R. Fandrick, Joe Ju Gao, Wenjie Li, Zhi-Hui Lu, Yongda Zhang
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Patent number: 7851625Abstract: Disclosed are processes for making 2, 3 disubstituted indole compounds such as compounds of general formula I comprised of the steps of a) reacting a bromoindole compound (i) with a dialkoxyl C1-5 borane in the presence of a ligand, a palladium catalyst and a base to make a compound of general formula (ii); or alternatively reacting compound (i) with a trialkyl magnesiate reagent, followed by treatment with a borate; b) reacting the product of step a with a R2-Hal where R2-Hal is defined herein.Type: GrantFiled: June 19, 2009Date of Patent: December 14, 2010Assignee: Boehringer Ingelheim International GmbHInventors: Ahmad Khodabocus, Zhi-Hui Lu, Chris Hugh Senanayake, Hanxun Wei, Yongda Zhang
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Patent number: 7642352Abstract: Disclosed are processes for making 2,3 disubstituted indole compounds such as compounds of general formula I comprised of the steps of a) reacting a bromoindole compound (i) with a dialkoxyl C1-5 borane in the presence of a ligand, a palladium catalyst and a base to make a compound of general formula (ii); or alternatively reacting compound (i) with a trialkyl magnesiate reagent, followed by treatment with a borate; b) reacting the product of step a with a R2-Hal where R2-Hal is defined herein.Type: GrantFiled: February 10, 2006Date of Patent: January 5, 2010Assignee: Boehringer Ingelheim International GmbHInventors: Ahmad Khodabocus, Zhi-Hui Lu, Chris Hugh Senanayake, Hanxun Wei, Yongda Zhang
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Publication number: 20090264655Abstract: Disclosed are processes for making 2, 3 disubstituted indole compounds such as compounds of general formula I comprised of the steps of a) reacting a bromoindole compound (i) with a dialkoxyl C1-5 borane in the presence of a ligand, a palladium catalyst and a base to make a compound of general formula (ii); or alternatively reacting compound (i) with a trialkyl magnesiate reagent, followed by treatment with a borate; b) reacting the product of step a with a R2-Hal where R2-Hal is defined herein.Type: ApplicationFiled: June 19, 2009Publication date: October 22, 2009Applicant: Boehringer Ingelheim International GmbHInventors: Ahmad KHODABOCUS, Zhi-Hui Lu, Chris Hugh Senanayake, Hanxun Wei, Yongda Zhang
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Publication number: 20060183752Abstract: Disclosed are processes for making 2,3 disubstituted indole compounds such as compounds of general formula I comprised of the steps of a) reacting a bromoindole compound (i) with a dialkoxyl C1-5 borane in the presence of a ligand, a palladium catalyst and a base to make a compound of general formula (ii); or alternatively reacting compound (i) with a trialkyl magnesiate reagent, followed by treatment with a borate; b) reacting the product of step a with a R2-Hal where R2-Hal is defined herein.Type: ApplicationFiled: February 10, 2006Publication date: August 17, 2006Applicant: Boehringer Ingelheim International GmbHInventors: Ahmad Khodabocus, Zhi-Hui Lu, Chris Senanayake, Hanxun Wei, Yongda Zhang