Patents by Inventor M. Robert Leanna

M. Robert Leanna 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: 7538105
    Abstract: Compounds having the formula are hepatitis C(HCV) polymerase inhibitors. Also disclosed are a composition and method for inhibiting hepatitis C(HCV) polymerase, processes for making the compounds, and synthetic intermediates employed in the processes.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: May 26, 2009
    Assignee: Abbott Laboratories
    Inventors: Douglas K. Hutchinson, John R. Bellettini, David A. Betebenner, Richard D. Bishop, Thomas B. Borchardt, Todd D. Bosse, Russell D. Cink, Charles A. Flentge, Bradley D. Gates, Brian E. Green, Mira M. Hinman, Peggy P. Huang, Larry L. Klein, Allan C. Krueger, Daniel P. Larson, M. Robert Leanna, Dachun Liu, Darold L. Madigan, Keith F. McDaniel, John T. Randolph, Todd W. Rockway, Teresa A. Rosenberg, Kent D. Stewart, Vincent S. Stoll, Rolf Wagner, Ming C. Yeung
  • Publication number: 20080193413
    Abstract: Compounds having the formula are hepatitis C(HCV) polymerase inhibitors. Also disclosed are a composition and method for inhibiting hepatitis C(HCV) polymerase, processes for making the compounds, and synthetic intermediates employed in the processes.
    Type: Application
    Filed: April 4, 2008
    Publication date: August 14, 2008
    Applicant: ABBOTT LABORATORIES
    Inventors: Douglas K. Hutchinson, John R. Bellettini, David A. Betebenner, Richard D. Bishop, Thomas B. Borchardt, Todd D. Bosse, Russell D. Cink, Charles A. Flentge, Bradley D. Gates, Brian E. Green, Mira M. Hinman, Peggy P. Huang, Larry L. Klein, Allan C. Krueger, Daniel P. Larson, M. Robert Leanna, Dachun Liu, Darold L. Madigan, Keith F. McDaniel, John T. Randolph, Todd W. Rockway, Teresa A. Rosenberg, Kent D. Stewart, Vincent S. Stoll, Rolf Wagner, Ming C. Yeung
  • Patent number: 7378414
    Abstract: Compounds having the formula are hepatitis C (HCV) polymerase inhibitors. Also disclosed are a composition and method for inhibiting hepatitis C (HCV) polymerase, processes for making the compounds, and synthetic intermediates employed in the processes.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: May 27, 2008
    Assignee: Abbott Laboratories
    Inventors: Douglas K. Hutchinson, John R. Bellettini, David A. Betebenner, Richard D. Bishop, Thomas B. Borchardt, Todd D. Bosse, Russell D. Cink, Charles A. Flentge, Bradley D. Gates, Brian E. Green, Mira M. Hinman, Peggy P. Huang, Larry L. Klein, Allan C. Krueger, Daniel P. Larson, M. Robert Leanna, Dachun Liu, Darold L. Madigan, Keith F. McDaniel, John T. Randolph, Todd W. Rockway, Teresa A. Rosenberg, Kent D. Stewart, Vincent S. Stoll, Rolf Wagner, Ming C. Yeung
  • Patent number: 7189849
    Abstract: Novel processes towards the synthesis of the antiviral valomaciclovir stearate in which an esterified guanine acetal is reduced to the corresponding alcohol, reacted with an activated amino acid and N-deprotected. The esterified guanine acetal is prepared from a 9-guanine derivative bearing an acyclic hydroxymethylbutylacetal. The processes are amendable to one-pot reactions.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: March 13, 2007
    Assignee: Medivir AB
    Inventors: M. Robert Leanna, Michael Rasmussen, Steven M. Hannick, Jien-Heh J. Tien, Kirill A. Lukin, Zhenping Tian, Sou-Jen Chang, Cynthia B. Curty, Bikshandarkoil A. Narayanan, John Bellettini, Bhadra Shelat, Tiffany Spitz
  • Patent number: 6878844
    Abstract: Methods and novel intermediates for the preparation of acyclic nucleoside derivatives of the formula: where one of R1 and R2 is an amino acid acyl group and the other of R1 and R2 is a —C(O)C3-C21 saturated or monounsaturated, optionally substituted alkyl and R3 is OH or H; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: April 12, 2005
    Assignee: Medivir AB
    Inventors: M. Robert Leanna, Michael Rasmussen, Howard Morton, Zhenping Tian, Daniel Plata, Bradley D. Gates, Bikshandarkoil A. Narayanan
  • Publication number: 20040248910
    Abstract: Methods and novel intermediates for the preparation of acyclic nucleoside derivatives of the formula: 1
    Type: Application
    Filed: June 17, 2004
    Publication date: December 9, 2004
    Applicant: Medivir AB
    Inventors: M. Robert Leanna, Steven M. Hannick, Michael Rasmussen, Jien-Heh J. Tien, Lakshmi Bhagavatula, Pulla Reddy Singam, Bradley D. Gates, Lawrence Kolaczkowski, Ramesh R. Patel, Greg Wayne, Greg Lannoye, Weijiang Zhang, Zhenping Tian, Kirill A. Lukin, Bikshandarkoil A. Narayanan, David A. Riley, Howard Morton, Sou-Jen Chang, Cynthia B. Curty, Daniel Plata, John Bellettini, Bhadra Shelat, Tiffany Spitz, Cheng-Xi Yang
  • Publication number: 20040132749
    Abstract: Methods and novel intermediates for the preparation of and the treatment with acyclic nucleoside derivatives of the formula: 1
    Type: Application
    Filed: December 19, 2003
    Publication date: July 8, 2004
    Applicant: Medivir AB
    Inventors: Per Engelhardt, Marita Hogberg, Nils-Gunnar Johansson, Xiao-Xiong Zhou, Bjorn Lindborg, M. Robert Leanna, Michael Rasmussen
  • Publication number: 20040024214
    Abstract: Methods and novel intermediates for the preparation of acyclic nucleoside derivatives of the formula: 1
    Type: Application
    Filed: December 9, 2002
    Publication date: February 5, 2004
    Applicant: Medivir AB
    Inventors: M. Robert Leanna, Michael Rasmussen, Howard Morton, Zhenping Tian, Daniel Plata, Bradley D. Gates, Bikshandarkoil A. Narayanan
  • Patent number: 6613936
    Abstract: Methods and novel intermediates for the preparation of acyclic nucleoside derivatives of the formula: where one of R1 and R2 is an amino acid acyl group and the other of R1 and R2 is a —C(O)C3-C21 saturated or monounsaturated, optionally substituted alkyl and R3 is OH or H; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: September 2, 2003
    Assignee: Medivir AB
    Inventors: M. Robert Leanna, Steven M. Hannick, Michael Rasmussen, Howard Morton, Daniel Plata
  • Patent number: 6576763
    Abstract: Compounds of the Formula I where one of R1 and R2 is —C(O)CH(CH(CH3)2)NH2 or —C(O)CH(CH(CH3)CH2CH3)NH2; the other of R1 and R2 is —C(═O)C3-C21 saturated or monounsaturated, optionally substituted alkyl; and R3 is OH or H; and pharmaceutically acceptable salts thereof have utility as enhanced bioavailability antivirals against herpes and retroviral infections.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: June 10, 2003
    Assignee: Medivir AB
    Inventors: Per Engelhardt, Marita Hogberg, Nils-Gunnar Johansson, Xiao-Xiong Zhou, Bjorn Lindborg, M. Robert Leanna, Michael Rasmussen
  • Patent number: 6184376
    Abstract: Methods and novel intermediates of the formula: wherein R6 and R7 are lower alkyl or benzyl or R6 and R7 taken together are —CH2CH2—, —CH2CH2CH2— or —CH2CH2CH2CH2CH2—, R8 is C1-C21 alkyl or a C2-C21 monounsaturated alkenyl, which may optionally be substituted with substitution substituents independently selected from the group consisting of hydroxy, C1-C6 alkyl, C1-C6 alkoxy, C1-C6 alkoxy C1-C6 alkyl, C1-C6 alkanoyl, amino, halo, cyano, azido, oxo, mercapto and nitro, and R9 is an alcohol protecting group. The intermediates are useful for the preparation of acyclic nucleoside derivatives of the formula: where one of R1 and R2 is an amino acid acyl group and the other of R1 and R2 is a —C(O)C3-C21 saturated or monounsaturated, optionally substituted alkyl and R3 is OH or H; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: February 6, 2001
    Assignee: Mediver AB
    Inventors: M. Robert Leanna, Steven M. Hannick, Michael Rasmussen, Jien-Heh J. Tien, Lakshmi Bhagavatula, Pulla Reddy Singam, Bradley D. Gates, Lawrence Kolaczkowski, Ramesh R. Patel, Greg Wayne, Greg Lannoye, Weijiang Zhang, Zhenping Tian, Kirill A. Lukin, Bikshandarkoil A. Narayanan, David A. Riley, Howard Morton, Sou-Jen Chang, Cynthia B. Curty, Daniel Plata, John Bellettini, Bhadra Shelat, Tiffany Spitz, Cheng-Xi Yang
  • Patent number: 5712400
    Abstract: A process for the preparation of 5-hydroxymethylthiazole comprises reacting a compound of the formula, ##STR1## with a carboxylic acid salt (optimally in the presence of a quaternary ammonium salt) and hydrolyzing the resulting ester. Subsequent dechlorination gives 5-hydroxymethylthiazole.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: January 27, 1998
    Assignee: Abbott Laboratories
    Inventors: M. Robert Leanna, Howard E. Morton, Michael S. Allen
  • Patent number: 5625092
    Abstract: Intermediates and processes are disclosed which are useful for the preparation of a substantially pure compound of the formula: ##STR1## wherein R.sub.6 and R.sub.7 are each hydrogen or R.sub.6 and R.sub.7 are independently selected from ##STR2## wherein R.sub.a and R.sub.b are independently selected from hydrogen, loweralkyl and phenyl and R.sub.c, R.sub.d and R.sub.e are independently selected from hydrogen, loweralkyl, trifluoromethyl, alkoxy, halo and phenyl; and ##STR3## wherein the naphthyl ring is unsubstituted or substituted with one, two or three substitutents independently selected from loweralkyl, trifluoromethyl, alkoxy and halo; orR.sub.6 is as defined above and R.sub.7 is R.sub.7a OC(O)-- wherein R.sub.7a is loweralkyl or benzyl; orR.sub.6 and R.sub.7 taken together with the nitrogen atom to which they are bonded are ##STR4## wherein R.sub.f, R.sub.g, R.sub.h and R.sub.i are independently selected from hydrogen, loweralkyl, alkoxy, halogen and trifluoromethyl and R.sub.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: April 29, 1997
    Assignee: Abbott Laboratories
    Inventors: Timothy L. Stuk, Michael S. Allen, Anthony R. Haight, Francis A. J. Kerdesky, Denton C. Langridge, M. Robert Leanna, Linda M. Lijewski, Laura Melcher, Howard E. Morton, Daniel W. Norbeck, Daniel S. Reno, Timothy A. Robbins, David Scarpetti, Hing L. Sham, Thomas J. Sowin, Jien-Heh J. Tien, Chen Zhao
  • Patent number: 5616776
    Abstract: Intermediates and processes are disclosed which are useful for the preparation of a substantially pure compound of the formula: ##STR1## wherein R.sub.6 and R.sub.7 are each hydrogen or R.sub.6 and R.sub.7 are independently selected from ##STR2## wherein R.sub.a and R.sub.b are independently selected from hydrogen, loweralkyl and phenyl and R.sub.c, R.sub.d and R.sub.e are independently selected from hydrogen, loweralkyl, trifluoromethyl, alkoxy, halo and phenyl; and ##STR3## wherein the naphthyl ring is unsubstituted or substituted with one, two or three substitutents independently selected from loweralkyl, trifluoromethyl, alkoxy and halo; orR.sub.6 is as defined above and R.sub.7 is R.sub.7a OC(O)-- wherein R.sub.7a is loweralkyl or benzyl; orR.sub.6 and R.sub.7 taken together with the nitrogen atom to which they are bonded are ##STR4## wherein R.sub.f, R.sub.g, R.sub.h and R.sub.i are independently selected from hydrogen, loweralkyl, alkoxy, halogen and trifluoromethyl and R.sub.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: April 1, 1997
    Assignee: Abbott Laboratories
    Inventors: Timothy L. Stuk, Anthony R. Haight, Francis A. J. Kerdesky, M. Robert Leanna, Howard E. Morton, Timothy A. Robbins, David Scarpetti, Jien-Heh J. Tien
  • Patent number: 5559245
    Abstract: New intermediates, and processes therefor, provide an efficient method for deriving 4-amino-1,2,2a,3,4,5-hexahydrobenz[cd]indoles, which are themselves intermediates to useful CNS agents, from the Kornfeld-Woodward ketone and like compounds. Preferred embodiments provide means for the preparation of substantially pure enantiomers of the desired 4-amino-1,2,2a,3,4,5-hexahydrobenz[cd]indole.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: September 24, 1996
    Assignee: Eli Lilly and Company
    Inventors: Thomas J. Kress, M. Robert Leanna, Michael J. Martinelli, Barry C. Peterson
  • Patent number: 5543552
    Abstract: Intermediates and processes are disclosed which are useful for the preparation of a substantially pure compound of the formula: ##STR1## wherein R.sub.6 and R.sub.7 are each hydrogen or R.sub.6 and R.sub.7 are independently selected from ##STR2## wherein R.sub.a and R.sub.b are independently selected from hydrogen, loweralkyl and phenyl and R.sub.c, R.sub.d and R.sub.e are independently selected from hydrogen, loweralkyl, trifluoromethyl, alkoxy, halo and phenyl; and ##STR3## wherein the naphthyl ring is unsubstituted or substituted with one, two or three substitutents independently selected from loweralkyl, trifluoromethyl, alkoxy and halo; orR.sub.6 is as defined above and R.sub.7 is R.sub.7a OC(O)- wherein R.sub.7a is loweralkyl or benzyl; orR.sub.6 and R.sub.7 taken together with the nitrogen atom to which they are bonded are ##STR4## wherein R.sub.f, R.sub.g, R.sub.h and R.sub.i are independently selected from hydrogen, loweralkyl, alkoxy, halogen and trifluoromethyl and R.sub.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: August 6, 1996
    Assignee: Abbott Laboratories
    Inventors: Timothy L. Stuk, Michael S. Allen, Anthony R. Haight, M. Robert Leanna, Linda M. Lijewski, Laura Melcher, Howard E. Morton, Daniel S. Reno, Hing L. Sham, Thomas J. Sowin
  • Patent number: 5543551
    Abstract: Intermediates and processes are disclosed which are useful for the preparation of a substantially pure compound of the formula: ##STR1## wherein R.sub.6 and R.sub.7 are each hydrogen or R.sub.6 and R.sub.7 are independently selected from ##STR2## wherein R.sub.a and R.sub.b are independently selected from hydrogen, loweralkyl and phenyl and R.sub.c, R.sub.d and R.sub.e are independently selected from hydrogen, loweralkyl, trifluoromethyl, alkoxy, halo and phenyl; and ##STR3## wherein the naphthyl ring is unsubstituted or substituted with one, two or three substitutents independently selected from loweralkyl, trifluoromethyl, alkoxy and halo; orR.sub.6 is as defined above and R.sub.7 is R.sub.7a OC(O)-- wherein R.sub.7a is loweralkyl or benzyl; orR.sub.6 and R.sub.7 taken together with the nitrogen atom to which they are bonded are ##STR4## wherein R.sub.f, R.sub.g, R.sub.h and R.sub.i are independently selected from hydrogen, loweralkyl, alkoxy, halogen and trifluoromethyl and R.sub.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: August 6, 1996
    Assignee: Abbott Laboratories
    Inventors: Timothy L. Stuk, Michael S. Allen, Anthony R. Haight, Francis A. Kerdesky, Denton C. Langridge, M. Robert Leanna, Linda M. Lijewski, Laura Melcher, Howard E. Morton, Daniel W. Norbeck, Daniel S. Reno, Timothy A. Robbins, Hing L. Sham, Thomas J. Sowin, Jien-heh J. Tien, Chen Zhao, David Scarpetti
  • Patent number: 5541328
    Abstract: A substantially pure compound of formula: ##STR1## wherein R.sub.6 and R.sub.7 are independently selected from ##STR2## wherein R.sub.a and R.sub.b are independently selected from hydrogen, loweralkyl and phenyl and R.sub.c, R.sub.d and R.sub.e are independently selected from hydrogen, loweralkyl, trifluoromethyl, alkoxy, halo and phenyl; and ##STR3## wherein the naphthyl ring is unsubstituted or substituted with one, two or three substitutents independently selected from loweralkyl, trifluoromethyl, alkoxy and halo; orR.sub.6 is as defined above and R.sub.7 is R.sub.7a OC(O)-- wherein R.sub.7a is loweralkyl; orR.sub.6 and R.sub.7 taken together with the nitrogen atom to which they are bonded are ##STR4## wherein R.sub.f, R.sub.g, R.sub.h and R.sub.l are independently selected from hydrogen, loweralkyl, alkoxy, halogen and trifluoromethyl; andR.sub.g is hydrogen, loweralkyl or benzyl; or an acid addition salt thereof.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: July 30, 1996
    Assignee: Abbott Laboratories
    Inventors: Timothy L. Stuk, Michael S. Allen, Anthony R. Haight, Francis A. Kerdesky, Denton C. Langridge, M. Robert Leanna, Linda M. Lijewski, Laura Melcher, Howard E. Morton, Daniel W. Norbeck, Daniel S. Reno, Timothy A. Robbins, Hing L. Sham, Thomas J. Sowin, Jien-Heh J. Tien, Chen Zhao, David Scarpetti
  • Patent number: 5491253
    Abstract: Intermediates and processes are disclosed which are useful for the preparation of a substantially pure compound of the formula: ##STR1## wherein R.sub.6 and R.sub.7 are each hydrogen or R.sub.6 and R.sub.7 are independently selected from ##STR2## wherein R.sub.a and R.sub.b are independently selected from hydrogen, loweralkyl and phenyl and R.sub.c, R.sub.d and R.sub.e are independently selected from hydrogen, loweralkyl, trifluoromethyl, alkoxy, halo and phenyl; and ##STR3## wherein the naphthyl ring is unsubstituted or substituted with one, two or three substitutents independently selected from loweralkyl, trifluoromethyl, alkoxy and halo; orR.sub.6 is as defined above and R.sub.7 is R.sub.7a OC(O)--wherein R.sub.7a is loweralkyl or benzyl; orR.sub.6 and R.sub.7 taken together with the nitrogen atom to which they are bonded are ##STR4## wherein R.sub.f, R.sub.g, R.sub.h and R.sub.i are independently selected from hydrogen, loweralkyl, alkoxy, halogen and trifluoromethyl and R.sub.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: February 13, 1996
    Assignee: Abbott Laboratories
    Inventors: Timothy L. Stuk, Michael S. Allen, Anthony R. Haight, Francis A. Kerdesky, Denton C. Langridge, M. Robert Leanna, Linda M. Lijewski, Laura Melcher, Howard E. Morton, Daniel W. Norbeck, Daniel S. Reno, Timothy A. Robbins, David Scarpetti, Hing L. Sham, Thomas J. Sowin, Jien-Heh J. Tien, Chen Zhao
  • Patent number: 5275950
    Abstract: Intermediates and a process for their preparation are disclosed which are useful for the preparation of a renin inhibiting compound of the formula: ##STR1## wherein R is a nitrogen-containing heterocycle which is bonded via a nitrogen atom to the sulfonyl group, R.sub.6 is hydrogen, alkoxy, halogen or loweralkyl, R.sub.7 is loweralkyl having 2 to 7 carbon atoms, and R.sub.8 is loweralkyl, cycloalkyl, or aryl or a pharmaceutically acceptable acid addition salt thereof.
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: January 4, 1994
    Assignee: Abbott Laboratories
    Inventors: Daniel A. Dickman, Bruce W. Horrom, Chi-Nung W. Hsiao, M. Robert Leanna, Hormoz Mazdiyasni, Howard E. Morton, Thomas M. Zydowsky, William R. Baker, Stephen L. Condon