Patents Represented by Attorney, Agent or Law Firm Ellen K. Park
  • Patent number: 5478734
    Abstract: An enzymatic process for the preparation of chiral epoxides, monohydroxy or dihydroxy compounds of formula ##STR1## by the stereoselective epoxidation or hydroxylation of benzopyrans of formula ##STR2## or resolution of compounds of formula ##STR3## The compounds of formula I and II are intermediates useful in the preparation of pyranyl cyanoguanidine derivatives.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: December 26, 1995
    Assignee: Bristol-Myers Squibb Company
    Inventors: Ramesh N. Patel, Amit Banerjee, Clyde McNamee, David Brzozowski, Laszlo J. Szarka
  • Patent number: 5470975
    Abstract: Novel A-II receptor antagonists have the formula ##STR1## and its isomer ##STR2## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are as defined herein.
    Type: Grant
    Filed: January 11, 1994
    Date of Patent: November 28, 1995
    Assignee: E.R. Squibb & Sons, Inc.
    Inventor: Karnail Atwal
  • Patent number: 5466817
    Abstract: A new method for the treatment of ischemia conditions and arrhythmia is disclosed. The method uses compounds of the formula ##STR1## wherein A can be --CH.sub.2 --, --O--, --NR.sub.9 --, --S--, --SO--, --SO.sub.2 --; X can be oxygen or sulfur; Y can be --NR.sub.8, --O--, --S--, --CH.sub.2 -- and the R groups are as defined herein. Novel compounds within the definition of formula I are also disclosed.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: November 14, 1995
    Assignee: E.R. Squibb & Sons, Inc.
    Inventor: Karnail Atwal
  • Patent number: 5466704
    Abstract: Compounds are disclosed having the formula ##STR1## These compounds inhibit the action of angiotensin II and are useful, therefore, for example, as antihypertensive agents.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: November 14, 1995
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Michael A. Poss
  • Patent number: 5463059
    Abstract: A process for preparing compounds of the formula ##STR1## where a, b, c, R.sub.1, R.sub.2, and R.sub.3 are as defined herein including the step of alkylating a phenol of formula ##STR2## with an acetylene of formula ##STR3## where X is chlorine; bromine; --OC(O)--R.sub.5, where R.sub.5 is alkyl, aryl or substituted aryl; or --OCO.sub.2 R.sub.6, where R.sub.6 is alkyl or ##STR4## in the presence of a catalytic amount of a cuprous or cupric salt. The compounds of formula I are intermediates useful in the preparation of pyranyl cyanoguanidine derivatives.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: October 31, 1995
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Jollie D. Godfrey, Jr., Richard H. Mueller, Thomas C. Sedergran, Nachimuthu Soundararajan
  • Patent number: 5453421
    Abstract: Novel compounds useful, for example, for the treatment of ischemic conditions and arrhythmia are disclosed. The compounds have the formula ##STR1## wherein X is oxygen or sulfur and the R groups are as defined herein.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: September 26, 1995
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Karnail S. Atwal, Syed Z. Ahmed, Dinos P. Santafianos
  • Patent number: 5436011
    Abstract: A method for reducing abrasion during film coating of susceptible solid dosage forms by applying to an uncoated dosage form, a subcoat containing a pharmaceutically acceptable polyalkylene glycol and the resulting solid pharmaceutical dosage form.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: July 25, 1995
    Assignee: Bristol-Myers Squibb Company
    Inventors: Andrew B. Dennis, David L. McCann, Alexander P. Green
  • Patent number: 5420037
    Abstract: S-enantiomers of the formula ##STR1## result from the reaction of a racemic form of compound I with an alcohol in the presence of an enzyme capable of selectively esterifying the R-enantiomers of the racemic compound.
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: May 30, 1995
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Jeffrey M. Howell, Ramesh N. Patel, Laszlo J. Szarka
  • Patent number: 5420277
    Abstract: Antibacterial activity is exhibited by novel compounds having the formula ##STR1## where R.sub.1, R.sub.2, and M are as defined herein and X is --(CH.sub.2).sub.n -- wherein n is 0, 1, 2, 3 or 4 or CR.sub.3 R.sub.4 wherein R.sub.3 and R.sub.4 are the same or different and each is hydrogen, --CH.sub.3 or --C.sub.2 H.sub.5 or R.sub.3 and R.sub.4 taken together with the carbon atom to which they are attached form a 3, 4, 5, 6 or 7-membered cycloalkyl ring. Also described are various intermediates for the preparation of compounds of formula 1.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: May 30, 1995
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: William H. Koster, Joseph E. Sundeen, Henner Straub, Peter Ermann, Uwe D. Treuner, Kent Amsberry, Michael Fakes, Sailesh A. Varia
  • Patent number: 5401758
    Abstract: Compounds having the formula ##STR1## and pharmaceutically acceptable salts thereof wherein R.sup.1 to R.sup.4 and n are as defined herein and X is O, S or NCN. These compounds have potassium channel opening activity and are useful, therefore for example, as cardiovascular agents.
    Type: Grant
    Filed: October 7, 1993
    Date of Patent: March 28, 1995
    Assignee: Bristol-Myers Squibb Company
    Inventors: Karnail S. Atwal, Francis N. Ferrara
  • Patent number: 5401848
    Abstract: Novel indane and quinoline derivatives, useful, for example, as antiischemic agents, having the formula ##STR1## where A, X, R.sub.1 -R.sub.7 are as defined herein, are disclosed.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: March 28, 1995
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Karnail Atwal
  • Patent number: 5393771
    Abstract: Compounds having the formula ##STR1## and pharmaceutically acceptable salts thereof. These compounds have potassium channel activating activity and are useful, therefore for example, as cardiovascular agents.
    Type: Grant
    Filed: May 12, 1993
    Date of Patent: February 28, 1995
    Assignee: Brisol-Myers Squibb Company
    Inventor: Karnail S. Atwal
  • Patent number: 5378704
    Abstract: Novel compounds having the formula ##STR1## wherein R.sub.1, R.sub.2, X and Y are as defined herein. These compounds inhibit the action of angiotensin II and are useful, therefore, for example, as antihypertensive agents.
    Type: Grant
    Filed: April 15, 1992
    Date of Patent: January 3, 1995
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Harold N. Weller, III
  • Patent number: 5374615
    Abstract: Novel compounds are disclosed having the formula ##STR1## wherein X, R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are substituents. These compounds inhibit the action of angiotensin II and are useful, therefore, for example, as antihypertensive agents.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: December 20, 1994
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Michael A. Poss
  • Patent number: 5374643
    Abstract: Novel compounds useful, for example, in the treatment of ischemic conditions and arrhythmia having the formula I ##STR1## wherein X is oxygen, sulfur or --NCN and the R groups are as defined herein.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: December 20, 1994
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Karnail S. Atwal, George C. Rovnyak
  • Patent number: 5350752
    Abstract: Novel A-II receptor antagonists have the formula ##STR1## or its isomer ##STR2## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6, are as defined herein. These compounds inhibit the action of angiotensin II and are useful, therefore, for example, as antihypertensive agents.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: September 27, 1994
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Michael A. Poss, John Lloyd, Karnail S. Atwal
  • Patent number: 5349069
    Abstract: A process for the preparation of compounds of formula ##STR1## or salt thereof where R.sub.1 is --X--Z and X is --C.tbd.C--,R.sub.2 and R.sub.2 ' are independently hydrogen, alkyl or trialkylsilyl;R.sub.3 is hydrogen or alkyl; andZ is a hydrophobic anchor;which includes reacting a compound of formula ##STR2## where R.sub.4 is alkyl, cycloalkyl or aryl; and R.sub.5 is trialkylsilyl or triarylsilyl with a compound of formula ##STR3## where Y is a halogen, to form a compound of formula ##STR4## and hydrolyzing the compound of formula IV to obtain the compounds of formula I. Compounds of formula I or salt thereof where R.sub.1 is --OR.sub.2 ' may be prepared by reacting a compound of formula III with a compound of formulaP(OR.sub.2).sub.3.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: September 20, 1994
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: John K. Thottathil, Wen S. Li
  • Patent number: 5321036
    Abstract: Compounds having the formula ##STR1## and pharmaceutically acceptable salts thereof where A is ##STR2## R.sub.3 is --(CH.sub.2).sub.n -- or in the case where R.sub.2 is ##STR3## R.sub.3 in addition to the above may be ##STR4## R.sub.4 is hydroxy, alkoxy, amino, alkylamino or dialkylamino; R.sub.5 is hydrogen, fluorine, chlorine, bromine, iodine, --CN, CF.sub.3, lower alkyl, lower alkoxy, cycloalkyl or aryl;R.sub.6 is lower alkyl, cycloalkyl or aryl;R.sub.7, R.sub.7 ', R.sub.8 and R.sub.8 ' are independently hydrogen or a lower alkyl or R.sub.7 and R.sub.8 may together be CH.sub.2 CH.sub.2 ;Z is hydrogen or ##STR5## m is an integer of 1 or 2; n is zero or an integer of 1 to 6; andp is an integer of 1 to 5. These compounds are beta 3 adrenergic receptor agonists and are useful, therefore for example, in the treatment of diabetes, obesity and gastrointestinal diseases.
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: June 14, 1994
    Assignee: Bristol-Myers Squibb Company
    Inventor: Philip M. Sher
  • Patent number: 5310932
    Abstract: Novel compounds are disclosed having the formula ##STR1## wherein X, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are as defined herein.
    Type: Grant
    Filed: September 11, 1991
    Date of Patent: May 10, 1994
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Karnail Atwal, George C. Rovnyak
  • Patent number: 5298625
    Abstract: A process for the preparation of compounds of formula ##STR1## or salt thereof where R.sub.1 is --X--Z and X is --C.tbd.C--,R.sub.2 and R.sub.2 ' are independently hydrogen, alkyl or trialkylsilyl;R.sub.3 is hydrogen or alkyl; andZ is a hydrophobic anchor;which includes reacting a compound of formula ##STR2## where R.sub.4 is alkyl, cycloalkyl or aryl; and R.sub.5 is trialkylsilyl or triarylsilyl with a compound of formula ##STR3## where Y is a halogen, to form a compound of formula ##STR4## and hydrolyzing the compound of formula IV to obtain the compounds of formula I. Compounds of formula I or salt thereof where R.sub.1 is --OR.sub.2 ' may be prepared by reacting a compound of formula III with a compound of formulaP(OR.sub.2).sub.3 XII.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: March 29, 1994
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: John K. Thottathil, Wen S. Li