Patents by Inventor David B. R. Johnston

David B. R. Johnston 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: 5652235
    Abstract: There are disclosed certain novel compounds identified as spiro piperidines and homologs which promote the release of growth hormone in humans and animals. This property can be utilized to promote the growth of food animals to render the production of edible meat products more efficient, and in humans, to treat physiological or medical conditions characterized by a deficiency in growth hormone secretion, such as short stature in growth hormone deficient children, and to treat medical conditions which are improved by the anabolic effects of growth hormone. Growth hormone releasing compositions containing such spiro compounds as the active ingredient thereof are also disclosed.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: July 29, 1997
    Assignee: Merck & Co., Inc.
    Inventors: Meng-Hsin Chen, Ravi P. Nargund, David B. R. Johnston, Arthur A. Patchett, James R. Tata, Lihu Yang
  • Patent number: 5578593
    Abstract: There are disclosed certain novel compounds identified as spiro piperidines and homologs which promote the release of growth hormone in humans and animals. This property can be utilized to promote the growth of food animals to render the production of edible meat products more efficient, and in humans, to treat physiological or medical conditions characterized by a deficiency in growth hormone secretion, such as short stature in growth hormone deficient children, and to treat medical conditions which are improved by the anabolic effects of growth hormone. Growth hormone releasing compositions containing such spiro compounds as the active ingredient thereof are also disclosed.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: November 26, 1996
    Assignee: Merck & Co., Inc.
    Inventors: Meng-Hsin Chen, David B. R. Johnston, Ravi P. Nargund, Arthur A. Patchett, James R. Tata, Lihu Yang
  • Patent number: 5536716
    Abstract: There are disclosed certain novel compounds identified as spiro piperidines and homologs which promote the release of growth hormone in humans and animals. This property can be utilized to promote the growth of food animals to render the production of edible meat products more efficient, and in humans, to treat physiological or medical conditions characterized by a deficiency in growth hormone secretion, such as short stature in growth hormone deficient children, and to treat medical conditions which are improved by the anabolic effects of growth hormone. Growth hormone releasing compositions containing such spiro compounds as the active ingredient thereof are also disclosed.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: July 16, 1996
    Assignee: Merck & Co., Inc.
    Inventors: Meng-Hsin Chen, David B. R. Johnston, Ravi P. Nargund, Arthur A. Patchett, James R. Tata, Lihu Yang
  • Patent number: 5389660
    Abstract: There are disclosed new substituted imidazo-fused 5-membered ring heterocyclic compounds and derivatives thereof which are useful as angiotensin II antagonists.
    Type: Grant
    Filed: October 7, 1992
    Date of Patent: February 14, 1995
    Assignee: Merck & Co., Inc.
    Inventors: William J. Greenlee, David B. R. Johnston, Malcolm MacCoss, Nathan B. Mantlo, Arthur A. Patchett, Prasun K. Chakravarty, Thomas F. Walsh
  • Patent number: 5164407
    Abstract: There are disclosed new substituted imidazo-fused 5-membered ring heterocyclic compounds and derivatives thereof which are useful as angiotensin II antagonists.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: November 17, 1992
    Assignee: Merck & Co., Inc.
    Inventors: William J. Greenlee, David B. R. Johnston, Malcolm MacCoss, Nathan B. Mantlo, Arthur A. Patchett, Prasun K. Chakravarty, Thomas F. Walsh
  • Patent number: 5157040
    Abstract: Substituted quinolines of the formula (I), are angiotensin II antagonists, ##STR1## and useful in the treatment of hypertension, ocular hypertension and certain CNS disorders.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: October 20, 1992
    Assignee: Merck & Co., Inc.
    Inventors: William J. Greenlee, David B. R. Johnston, Malcolm MacCoss
  • Patent number: 5057517
    Abstract: There are disclosed certain 6-piperazinopurines and heteroaromatic derivatives thereof which have oral hypoglycemic acitivity and with such ability to lower blood sugar are useful in the treatment of type II diabetes and/or obesity with associated insulin resistance. Processes for the preparation of such compounds and compositions containing such compounds as the active ingredient thereof are also disclosed.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: October 15, 1991
    Assignee: Merck & Co., Inc.
    Inventors: David B. R. Johnston, Malcolm MacCoss, Stephen Marburg, Laura C. Meurer, Richard L. Tolman
  • Patent number: 4997936
    Abstract: Disclosed are 2- and 6-substituted-1-carbadethiapen-2-em-3-carboxylic acids having the structure: ##STR1## wherein R.sup.6, and R.sup.7 are, inter alia, independently selected from the group consisting of hydrogen, alkyl, alkenyl, aryl and aralkyl; A is a direct, single bond connecting the indicated S and C atoms, or A is a cyclic or acyclic connecting group selected, inter alia, from alkyl, cyclalkyl, aryl, heteroaryl, heteroalkyl; R.sup.1 and R.sup.2 inter alia, independently selected from hydrogen, alkyl, aryl; additionally, said carbamimidoyl is characterized by cyclic structures achieved by the joinder of the two nitrogen atoms via their substituents and by their joinder to connecting group A; additionally, "carbamimidiums" are disclosed by quarternization of one of the nitrogen atoms of said carbammidoyl. Such compounds as well as their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: March 5, 1991
    Assignee: Merck & Co., Inc.
    Inventors: Burton G. Christensen, David B. R. Johnston, Susan M. Schmitt
  • Patent number: 4992542
    Abstract: Disclosed are 2- and 6-substituted-1-carbadethiapen-2-em-3-carboxylic acids having the structure: ##STR1## wherein R.sup.6, R.sup.7 and R.sup.8 are inter alia, independently selected from the group consisting of hydrogen, alkyl, alkenyl, aryl and aralkyl. Such compounds as well as their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds, pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
    Type: Grant
    Filed: February 26, 1987
    Date of Patent: February 12, 1991
    Assignee: Merck & Co., Inc.
    Inventors: Burton G. Christensen, David B. R. Johnston, Susan M. Schmitt
  • Patent number: 4518599
    Abstract: Antimicrobial compounds of the formula: ##STR1## wherein: Hal is bromine or chlorine; andR is mono- or di-substituted mono- or diloweralkylamino wherein the loweralkyl substituents are hydroxy or loweralkanoyloxy; 4-morpholino; thiocyano; mercapto; straight or branched chain C.sub.1-8 alkylthio; mono- or di-substituted loweralkylthio wherein the substituents are hydroxy, amino, loweralkanoylamino, or loweralkoxycarbonyl; arylthio; loweralkylsulfoxy; or loweralkylsulfonyl; are useful in various agricultural and industrial areas.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 21, 1985
    Assignee: Merck & Co., Inc.
    Inventor: David B. R. Johnston
  • Patent number: 4517186
    Abstract: Antimicrobial compounds of the formula: ##STR1## wherein: R is mono- or di-substituted mono- or diloweralkylamino wherein the loweralkyl substituents are hydroxy or loweralkanoyloxy; 4-morpholino; thiocyano; mercapto; straight or branched chain C.sub.1-8 alkylthio; mono- or di-substituted lower alkylthio wherein the substituents are hydroxy, amino, loweralkanoylamino, or loweralkoxycarbonyl; arylthio; loweralkylsulfoxy; or loweralkylsulfonyl; are useful in various agricultural and industrial areas.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 14, 1985
    Assignee: Merck & Co., Inc.
    Inventor: David B. R. Johnston
  • Patent number: 4512991
    Abstract: Antimicrobial compounds of the formula: ##STR1## wherein: Hal is bromine or chlorine;R is chloro, but only when R.sup.1 is other than hydrogen; mono- or di-substituted mono- or diloweralkylamino wherein the loweralkyl substituents are hydroxy or loweralkanoyloxy; 4-morpholino; thiocyano; mercapto; straight or branched chain C.sub.1-8 alkylthio; mono- or di-substituted loweralkylthio wherein the substituents are hydroxy, amino, loweralkanoylamino, or loweralkoxycarbonyl; arylthio; loweralkylsulfoxy; or loweralkylsulfonyl; andR.sup.1 is hydrogen; straight or branched C.sub.1-8 alkyl; aryl; aryl substituted with up to two members selected from the group consisting of C.sub.1-3 alkyl, C.sub.1-3 alkoxy, halo, and mono- or di-C.sub.1-3 alkyl substituted amino; heteroaryl; formyl C.sub.2-4 alkenyl; or C.sub.2-4 alkenyl;are useful in various agricultural and industrial areas.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: April 23, 1985
    Assignee: Merck & Co., Inc.
    Inventor: David B. R. Johnston
  • Patent number: 4507299
    Abstract: Antimicrobial compounds of the formula: ##STR1## wherein: Hal is bromine or chlorine;R is halo; mono- or di-substituted mono- or diloweralkylamino wherein the loweralkyl substituents are hydroxy or loweralkanoyloxy; 4-morpholino; thiocyano; mercapto; straight or branched chain C.sub.1-8 alkylthio; mono- or di-substituted loweralkylthio wherein the substituents are hydroxy, amino, loweralkanoylamino, or loweralkoxycarbonyl; arylthio; loweralkylsulfoxy; or loweralkylsulfonyl;R.sup.1 is hydrogen; straight or branched C.sub.1-8 alkyl; aryl; aryl substituted with up to two members selected from the group consisting of C.sub.1-3 alkyl, C.sub.1-3 alkoxy, halo, and mono- or di-C.sub.1-3 alkyl substituted amino; heteroaryl; formyl C.sub.2-4 alkenyl; or C.sub.2-4 alkenyl; andR.sup.2 is straight or branched C.sub.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: March 26, 1985
    Assignee: Merck & Co., Inc.
    Inventor: David B. R. Johnston
  • Patent number: 4481202
    Abstract: Antimicrobial compounds of the formula: ##STR1## wherein: Hal is bromine or chlorine; andR is halo; mono- or di-substituted mono- or diloweralkylamino wherein the loweralkyl substituents are hydroxy or loweralkanoyloxy; 4-morpholino; thiocyano; mercapto; straight or branched chain C.sub.1-8 alkylthio; mono- or di-substituted loweralkylthio wherein the substituents are hydroxy, amino, loweralkanoylamino, or loweralkoxycarbonyl; arylthio; loweralkylsulfoxy; or loweralkylsulfonyl; andR.sup.1 is C.sub.6-12 alkyl;are useful in various agricultural and industrial applications.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: November 6, 1984
    Assignee: Merek & Co., Inc.
    Inventor: David B. R. Johnston
  • Patent number: 4442097
    Abstract: Antimicrobial compounds of the formula: ##STR1## wherein: Hal is bromine or chlorine; andR is halo; mono- or di-substituted mono- or diloweralkylamino wherein the loweralkyl substituents are hydroxy or loweralkanoyloxy; 4-morpholino; thiocyano; mercapto; straight or branched chain C.sub.1-8 alkylthio; mono- or di-substituted loweralkylthio wherein the substituents are hydroxy, amino, loweralkanoylamino, or loweralkoxycarbonyl; arylthio; loweralkylsulfoxy; or loweralkylsulfonyl;R.sup.1 is hydrogen; or loweralkyl;R.sup.2 is hydroxyloweralkyl; (CH.sub.2).sub.n COOR.sup.a, where R.sup.a is hydrogen, loweralkyl, or benzyl; and n is 1 to 3;R.sup.1 and R.sup.2 are taken together with an oxygen or nitrogen atom to form morpholino, piperazinyl, or piperazinyl which is N-loweralkyl substituted; andR.sup.3 is hydrogen; straight or branched C.sub.1-8 alkyl, provided that when R.sup.3 is hydrogen or C.sub.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: April 10, 1984
    Assignee: Merck & Co., Inc.
    Inventor: David B. R. Johnston
  • Patent number: 4442096
    Abstract: Antimicrobial compounds of the formula: ##STR1## wherein: Hal is bromine or chlorine; andR is halo; mono- or di-substituted mono- or diloweralkylamino wherein the loweralkyl substituents are hydroxy or loweralkanoyloxy; 4-morpholino; thiocyano; mercapto; straight or branched chain C.sub.1-8 alkylthio; mono- or di-substituted loweralkylthio wherein the substituents are hydroxy, amino, loweralkanoylamino, or loweralkoxycarbonyl; arylthio; loweralkylsulfoxy; or loweralkylsulfonyl;R.sup.1 is hydrogen; or loweralkyl;R.sup.2 is (CH.sub.2).sub.n COOR.sup.3, where R.sup.3 is hydrogen, loweralkyl, or benzyl; and n is 1 to 3; andR.sup.1 and R.sup.2 are taken together with an oxygen or nitrogen atom to form morpholino, piperazinyl, or piperazinyl which is N-loweralkyl substituted; are useful in various agricultural and industrial areas.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: April 10, 1984
    Assignee: Merck & Co., Inc.
    Inventor: David B. R. Johnston
  • Patent number: 4442095
    Abstract: Antimicrobial compounds of the formula: ##STR1## wherein: Hal is bromine or chlorine; andR is halo; mono- or di-substituted mono- or diloweralkylamino wherein the loweralkyl substituents are hydroxy or loweralkanoyloxy; 4-morpholino; thiocyano; mercapto; straight or branched chain C.sub.1-8 alkylthio; mono- or di-substituted loweralkylthio wherein the substituents are hydroxy, amino, loweralkanoylamino, or loweralkoxycarbonyl; arylthio; loweralkylsulfoxy; or loweralkylsulfonyl;R.sup.1 is hydrogen; or loweralkyl;R.sup.2 is (CH.sub.2).sub.n COOR.sup.a, where R.sup.a is hydrogen, loweralkyl, or benzyl; and n is 1 to 3;R.sup.1 andR.sup.2 are taken together with an oxygen or nitrogen atom or form morpholino, piperazinyl, or piperazinyl which is N-loweralkyl substituted;R.sup.3 is hydrogen; straight or branched C.sub.1-8 alkyl; aryl; aryl substituted with up to two members selected from the group consisting of C.sub.1-3 alkyl, C.sub.1-3 alkoxy, halo, and mono- or di-C.sub.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: April 10, 1984
    Assignee: Merck & Co., Inc.
    Inventor: David B. R. Johnston
  • Patent number: 4390693
    Abstract: Novel cephalosporin compounds having a substituted or unsubstituted vinyl group at the 3-position are prepared by the reaction of a phosphoranylidene compound with a compound containing a carbonyl group. The novel cephalosporin compounds are active against a range of gram-negative and gram-positive microorganisms and are of value in human and veterinary medicine.
    Type: Grant
    Filed: October 9, 1980
    Date of Patent: June 28, 1983
    Assignee: Merck & Co., Inc.
    Inventors: Thomas R. Beattie, John Hannah, David B. R. Johnston
  • Patent number: 4377584
    Abstract: 4-Aza-17.beta.-substituted-5.alpha.-androstan-3-ones and their A-homo analogs of the formula: ##STR1## where Formula (I) may also have the structure of partial Formulas (II) and/or (III);and pharmaceutically acceptable salts of the above compounds are active as testosterone 5.alpha.-reductase inhibitors, and thus useful topically for treatment of acne, seborrhea, female hirsutism, and systemically in treatment of benign prostatic hypertrophy.
    Type: Grant
    Filed: September 23, 1980
    Date of Patent: March 22, 1983
    Assignee: Merck & Co., Inc.
    Inventors: Gary H. Rasmusson, David B. R. Johnston, Glen E. Arth, deceased
  • Patent number: 4348320
    Abstract: Disclosed are substituted azetidinones (1) which are useful in the preparation of 1-carba-2-penem-3-carboxylic acids (I): ##STR1## wherein R is hydrogen or a blocking group and R.sup.1, R.sup.2 and R.sup.3 are, inter alia, independently selected from the group consisting of hydrogen, alkyl, aryl, and aralkyl. Such 1-carba-2-penem-3-carboxylic acids and their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics.
    Type: Grant
    Filed: August 20, 1980
    Date of Patent: September 7, 1982
    Assignee: Merck & Co., Inc.
    Inventors: F. Aileen Bouffard, Burton G. Christensen, David B. R. Johnston