Patents by Inventor Frank R. Busch

Frank R. Busch 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).

  • Publication number: 20080275051
    Abstract: The present invention comprises an improved process for the preparation of substituted quinoxaline I by cyclization of the corresponding dianiline.
    Type: Application
    Filed: February 21, 2006
    Publication date: November 6, 2008
    Inventors: Frank R. Busch, Gregory J. Withbroe, Timothy J. Watson, Terry G. Sinay, Joel M. Hawkins, Iasson G. Mustakis
  • Publication number: 20070224690
    Abstract: The subject invention provides a varenicline composition that comprises varenicline, or a pharmaceutically acceptable salt thereof, and an amount of a compound selected from one or more of several mononitro, monoamino, mixed aminonitro, diamino or dinitro intermediates, and the concentration of said compound is greater than 0 ppm and not greater than about 500 ppm, not greater than about 100 ppm or not greater than about 10 ppm. Methods for synthesizing and using such varenicline compositions are also provided.
    Type: Application
    Filed: March 26, 2007
    Publication date: September 27, 2007
    Inventors: Frank R. Busch, Gregory J. Withbroe, Terry G. Sinay, Karen S. Bronk
  • Publication number: 20040152758
    Abstract: The instant invention provides crystal forms of 5-chloro-N-[(1S,2R)-3-[3R,4S]-3,4-dihydroxy-1-pyrrolidinyl]-2-hydroxy-3-oxo-1-(phenylmethyl)propyl]-1H-indole-2-carboxamide (I) 1
    Type: Application
    Filed: October 22, 2003
    Publication date: August 5, 2004
    Applicant: Pfizer Inc.
    Inventors: Douglas J. M. Allen, Frank R. Busch, Joseph F. Krzyzaniak, Zheng Jane Li, Susan L. Orrill, Peter R. Rose, Derek L. Tickner, Harry O. Tobiassen
  • Publication number: 20040048876
    Abstract: The subject invention provides a ziprasidone composition that comprises not greater than 1000 ppm des-chloro ziprasidone, preferably not greater than about 500 ppm des-chloro ziprasidone, and more preferably not greater than about 100 ppm des-chloro ziprasidone. Methods for synthesizing and using such ziprasidone compositions are also provided.
    Type: Application
    Filed: February 18, 2003
    Publication date: March 11, 2004
    Applicant: Pfizer Inc.
    Inventors: Frank R. Busch, Adam Grobin, Kyle Leeman, Harry R. Howard
  • Patent number: 6696574
    Abstract: The instant invention provides novel processes and intermediates useful in the preparation of certain N-(indole-2-carbonyl)-&bgr;-alaninamide compounds, which compounds are glycogen phosphorylase inhibitors useful in the treatment of diseases such as hypercholesterolemia, hyperglycemia, hyperinsulinemia, hyperlipidemia, hypertension, atherosclerosis, diabetes, diabetic cardiomyopathy, infection, tissue ischemia, myocardial ischemia, and in inhibiting tumor growth.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: February 24, 2004
    Assignee: Pfizer Inc.
    Inventors: Mark T. Barrila, Frank R. Busch, Michel A. Couturier, Susan L. Orrill, Peter R. Rose, Derek L. Tickner, Harry O. Tobiassen, Gregory J. Withbroe
  • Patent number: 6683106
    Abstract: The instant invention provides crystal forms of 5-chloro-N-[(1S,2R)-3-[3R,4S]-3,4-dihydroxy-1-pyrrolidinyl]-2-hydroxy-3-oxo-1-(phenyl) methyl)propyl]-1H-indole-2-carboxamide (I) processes for the production of such crystal forms; pharmaceutical compositions comprising such crystal forms; and methods of treating glycogen phosphorylase dependent diseases, or conditions with such crystal forms, or such pharmaceutical compositions.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: January 27, 2004
    Assignee: Pfizer Inc.
    Inventors: Douglas J. M. Allen, Frank R. Busch, Joseph F. Krzyzaniak, Zheng Jane Li, Susan L. Orrill, Peter R. Rose, Derek L. Tickner, Harry O. Tobiassen
  • Patent number: 6673929
    Abstract: This invention relates to improved processes for preparing compounds of Formula II, and compounds of Formula III, wherein R1, R2, R3 and Prt are defined as set forth in the specification.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: January 6, 2004
    Assignee: Pfizer Inc.
    Inventors: Frank R. Busch, Charles K. Chiu, Clifford N. Meltz, Ronald J. Post, Peter R. Rose
  • Publication number: 20030195243
    Abstract: The instant invention provides crystal forms of 5-chloro-N-[(1S,2R)-3-[3R,4S]-3,4-dihydroxy-1-pyrrolidinyl]-2-hydroxy-3-oxo-1-(phenylmethyl)propyl]-1H-indole-2-carboxamide (I) 1
    Type: Application
    Filed: April 15, 2003
    Publication date: October 16, 2003
    Applicant: Pfizer Inc.
    Inventors: Douglas J. M. Allen, Frank R. Busch, Joseph F. Krzyzaniak, Zheng Jane Li, Susan L. Orrill, Peter R. Rose, Derek L. Tickner, Harry O. Tobiassen
  • Publication number: 20030187051
    Abstract: The instant invention provides novel processes and intermediates useful in the preparation of certain N-(indole-2-carbonyl)-&bgr;-alaninamide compounds, which compounds are glycogen phosphorylase inhibitors useful in the treatment of diseases such as hypercholesterolemia, hyperglycemia, hyperinsulinemia, hyperlipidemia, hypertension, atherosclerosis, diabetes, diabetic cardiomyopathy, infection, tissue ischemia, myocardial ischemia, and in inhibiting tumor growth.
    Type: Application
    Filed: January 16, 2003
    Publication date: October 2, 2003
    Applicant: Pfizer Inc.
    Inventors: Mark T. Barrila, Frank R. Busch, Michel A. Couturier, Susan L. Orrill, Peter R. Rose, Derek L. Tickner, Harry O Tobiassen, Gregory J. Withbroe
  • Patent number: 6627643
    Abstract: This invention relates to methods of preparing sodium-hydrogen exchanger type 1 (NHE-1) inhibitors of formula I′ and methods of preparing pharmaceutical compositions comprising such NHE-1 inhibitors.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: September 30, 2003
    Assignee: Pfizer Inc.
    Inventors: Frank R. Busch, Gregory J. Withbroe
  • Publication number: 20030158414
    Abstract: This invention relates to improved processes for preparing compounds of Formula II, 1
    Type: Application
    Filed: October 30, 2002
    Publication date: August 21, 2003
    Inventors: Frank R. Busch, Charles K. Chiu, Clifford N. Meltz, Ronald J. Post, Peter R. Rose
  • Publication number: 20030119873
    Abstract: This invention relates to methods of preparing sodium-hydrogen exchanger type 1 (NHE-1) inhibitors of formula I′ 1
    Type: Application
    Filed: December 16, 2002
    Publication date: June 26, 2003
    Applicant: Pfizer Inc.
    Inventors: Frank R. Busch, Gregory J. Withbroe
  • Patent number: 6541634
    Abstract: This invention relates to improved processes for preparing compounds of Formula II, and compounds of Formula III, wherein R1, R2, R3 and Prt are defined as set forth in the specification.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: April 1, 2003
    Assignee: Pfizer Inc.
    Inventors: Frank R. Busch, Charles K. Chiu, Clifford N. Meltz, Ronald J. Post, Peter R. Rose
  • Publication number: 20020002283
    Abstract: This invention relates to improved processes for preparing compounds of Formula II, 1
    Type: Application
    Filed: February 1, 2000
    Publication date: January 3, 2002
    Inventors: Frank R Busch, Charles K Chiu, Clifford N Meltz, Ronald J Post, Peter R Rose
  • Patent number: 6245765
    Abstract: The invention is directed to the mesylate dihydrate salts of 5-(2-(4-(1,2-benzisothiazol-3-yl)-1-piperazinyl)ethyl)-6-chloro-1,3-dihydro-2H-indol-2-one, pharmaceutical compositions containing said ziprasidone mesylate dihydrates, and methods of adminsitering the ziprasidone mesylate dihydrates to treat psychotic diseases.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: June 12, 2001
    Assignee: Pfizer Inc
    Inventors: Frank R. Busch, Carol A. Rose, Russell J. Shine
  • Patent number: 6110918
    Abstract: Mesylate Trihydrate Salt of 5-(2-(4-(1,2-benzisothiazol-3-yl)-1-piperazinyl)ethyl)-6-chloro-1,3-dihydr o-2(1H)-indol-2-one (=Ziprasidone), Its Preparation and Its Use as Dopamine D2 AntagonistThe invention relates to the mesylate trihydrate salt of 5-(2-(4-(1,2-benzisothiazol-3-yl)-1-piperazinyl)ethyl)-6-chloro-1,3-dihydr o-2(1H)-indol-2-one ("ziprasidone mesylate trihydrate"), to pharmaceutical compositions containing ziprasidone mesylate trihydrate, and to methods of administering ziprasidone mesylate trihydrate to treat psychotic diseases.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: August 29, 2000
    Assignee: Pfizer Inc
    Inventors: Frank R. Busch, Carol A. Rose
  • Patent number: 5606041
    Abstract: Processes for the synthesis of tigogenin beta-O-cellobioside heptaalkanoate which is an intermediate for the known hypo-cholesterolemic agent tigogenin beta-cellobioside. The process comprises reacting .alpha.-cellobiosyl bromide heptaalkanoate and .beta.-tigogenin in the presence of zinc fluoride or zinc cyanide under conditions capable of forming said tigogenyl .beta.-O-cellobioside heptaalkanoate. The analogous preparations of hecogenin .beta.-O-cellobioside heptaalkanoate 11-ketotigogenin .beta.-O-cellobioside heptaalkanoate, and diosgenin .beta.-O-cellobioside heptaalkanoate are also disclosed. The process provides both high .beta.-anomeric selectivity and high yields.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: February 25, 1997
    Assignee: Pfizer Inc.
    Inventors: Frank R. Busch, Kathleen D. Goggin, John F. Lambert, Russell J. Shine, Stanley W. Walinsky
  • Patent number: 5530107
    Abstract: Processes for the synthesis of tigogenin beta-O-cellobioside heptaalkanoate which is an intermediate for the known hypocholesterolemic agent tigogenin beta-cellobioside. The process comprises reacting .alpha.-cellobiosyl bromide heptaalkanoate and .beta.-tigogenin in the presence of zinc fluoride or zinc cyanide under conditions capable of forming said tigogenyl .beta.-O-cellobioside heptaalkanoate. The analogous preparations of hecogenin .beta.-O-cellobioside heptaalkanoate, 11-ketotigogenin .beta.-O-cellobioside heptaalkanoate, and diosgenin .beta.-O-cellobioside heptaalkanoate are also disclosed. The process provides both high .beta.-anomeric selectivity and high yields.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: June 25, 1996
    Assignee: Pfizer Inc.
    Inventors: Douglas J. M. Allan, Frank R. Busch, John F. Lambert, Russell J. Shine, Stanley W. Walinsky
  • Patent number: 5380860
    Abstract: A method for preparing a compound of the formula ##STR1## wherein Q is C--H or N; R.sup.1 is C.sub.1-C.sub.4 alkyl, benzyl or p-nitrobenzyl and X and Y are independently selected from fluoro and chloro comprising reacting a compound of the formula ##STR2## wherein Q is >C--H or N; X and Y are independently selected from fluoro and chloro; and Z is fluoro, chloro, 1-imidazolyl or substituted 1-imidazolyl, wherein the 1-imidazolyl group is substituted with one or two substituents independently selected from C.sub.1 to C.sub.4 alkyl, with a compound of the formula[M.sup.n+ ].sub.p [V.sup.p- ].sub.nwherein M is an alkaline earth metal, Cu or Mn, n is 2, V.sup.p-, wherein p is 1 or 2, is an anion of the formula ##STR3## or a dianion of the formula ##STR4## and R.sup.1 is C.sub.1 to C.sub.6 alkyl or paranitrobenzyl, with the proviso that when Z is 1-imidazolyl or substituted 1-imidazole, M is magnesium, copper or manganese and with the proviso that when Z is fluoro, chloro or bromo, V.sup.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: January 10, 1995
    Assignee: Pfizer Inc.
    Inventors: Frank R. Busch, Richard S. Lehner, Brian T. O'Neill
  • Patent number: 5338846
    Abstract: A process for preparing a compounds of the formula ##STR1## or a pharmaceutically acceptable acid addition salt thereof, which comprises reacting a piperazine salt of the formula ##STR2## with an alkyl halide containing compound of the formula ##STR3## in water with a reagent to neutralize the hydrohalic acid and heating the mixture under conditions which are suitable to effect the coupling of said piperazine salt with said alkyl halide containing compound.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: August 16, 1994
    Assignee: Pfizer Inc.
    Inventors: Frank R. Busch, Paul Bowles, Douglas John, Meldrum Allen, Sabeto A. DiRoma, Dennis M. Godek