Patents by Inventor Nicholas J. Hrib

Nicholas J. Hrib 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: 5130332
    Abstract: Novel oxolabdanes, intermediates and processes for the preparation thereof, and methods for reducing intraocular pressure utilizing compounds or compositions thereof are disclosed.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: July 14, 1992
    Assignee: Hoechst Roussel Pharmaceuticals Inc.
    Inventor: Nicholas J. Hrib
  • Patent number: 5045546
    Abstract: Novel 8-azabicyclo[3.2.1]octylalkylthiazolidinones of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, m, x and y are defined herein, process for the preparation thereof, and methods of treating psychoses and alleviating pain employing compounds and compositions thereof are disclosed.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: September 3, 1991
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventors: Nicholas J. Hrib, John G. Jurcak
  • Patent number: 5041445
    Abstract: This invention relates to 3-[1-thiazolidinylbutyl-4-piperazinyl]-1H-indazoles of the formula ##STR1## where R.sub.1 and R.sub.2 are each independently hydrogen or loweralkyl or R.sub.1 and R.sub.2 taken together with the carbon atom to which they are attached form a cyclopentane, cyclohexane or cycloheptane ring; R.sub.3 and R.sub.4 are independently hydrogen or loweralkyl or R.sub.3 and R.sub.4 taken together with the carbon atom to which they are attached form a cyclopentane, cyclohexane or cycloheptane ring; R.sub.5 is hydrogen, loweralkyl, alkanoyl or aroyl; X is hydrogen, halogen, loweralkyl or alkoxy; m is an integer of 1 to 3, the pharmaceutically acceptable acid addition salts thereof and where applicable, the optical, geometrical and stereoisomers and racemic mixtures thereof. The compounds of this invention are useful as antipsychotic agents.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: August 20, 1991
    Assignee: Hoechst-Roussel Pharmaceuticals Incorporated
    Inventors: Nicholas J. Hrib, Joseph T. Strupczewski, John G. Jurcak, Kenneth Bordeau
  • Patent number: 5037984
    Abstract: There are disclosed compounds of the formula ##STR1## where n is 0 or 1; A is ##STR2## where X in each occurrence is independently hydrogen, halogen, loweralkyl hydroxy, nitro, loweralkoxy, amino, cyano, trifluoromethyl or methylthio; Y in each occurrence is independently hydrogen, halogen, loweralkyl, hydroxy, nitro, loweralkoxy, amino, cyano, trifluoromethyl or methylthio; m is 1 or 2; k is 1 or 2; R.sub.1 and R.sub.2 are independently hydrogen, loweralkyl, ##STR3## or aryl except that when R.sub.1 is ##STR4## or aryl, R.sub.2 is hydrogen, or alternatively R.sub.1 +R.sub.2 taken together with the carbon atom to which they are attached form a cyclopentane, cyclohexane, cycloheptane, pyran, thiopyran, indan or piperidine ring; R.sub.3 and R.sub.4 are independently hydrogen or loweralkyl, or alternatively R.sub.3 +R.sub.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: August 6, 1991
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventors: Nicholas J. Hrib, John G. Jurcak
  • Patent number: 5036152
    Abstract: Novel alkoxycarbonylalkylphospholipids, alkylaminocarbonylalkylphospholipids, processes for the preparation thereof, and methods for treating inflammation utilizing compounds or compositions thereof are disclosed.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: July 30, 1991
    Assignee: Hoechst-Roussel Pharmaceuticals Incorporated
    Inventors: Nicholas J. Hrib, Kirk D. Shoger, John J. Tegeler
  • Patent number: 5034392
    Abstract: This invention relates to compounds of the formula ##STR1## where R.sub.1 and R.sub.2 are independently hydrogen or loweralkyl or R.sub.1 and R.sub.2 taken together with the carbon atom to which they are attached form a spiro-fused cycloalkane of 5 to 8 carbons; R.sub.3 and R.sub.4 are independently hydrogen or loweralkyl or R.sub.3 and R.sub.4 taken together with the carbon atom to which they are attached form a spiro-fused cycloalkane of 5 to 8 carbons; R.sub.5 and R.sub.6 taken together with the nitrogen atom to which they are attached are ##STR2## where X in each occurrence is independently hydrogen, halogen, loweralkyl, hydroxy, nitro, amino, cyano, trifluoromethyl or methoxy; and m is 0, 1 or 2; the pharmaceutically acceptable acid addition salts thereof and where applicable the optical and geometrical isomers and racemic mixtures thereof. The compounds of this invention are useful as analgesic and antihypertensive agents.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: July 23, 1991
    Assignee: Hoechst-Roussel Pharmaceuticals Incorporated
    Inventor: Nicholas J. Hrib
  • Patent number: 5008407
    Abstract: A method of regioselectively and stereoselectively synthesizing forskolin (8,13-epoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetrahydroxylabd-14-en-11-on e) from 9-deoxyforskolin (8,13-epoxy-1.alpha.,6.beta.,7.beta.-trihydroxylabd-14-en-11-one) with a good yield is described. In a preferred embodiment, it comprises an enol ether formation from 8,13-epoxy-1.alpha.,6.beta.,7.beta.-trihydroxylabd-14-en-11-one-6,7-carbon ate, oxidation of the enol ether with a suitable peroxy acid to obtain 11,12-dehydro-8,13-epoxy-11-methoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetr ahydrolabd-14-ene-6,7-carbonate and hydrolysis of the latter under an acidic condition to obtain 8,13-epoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetrahydroxylabd-14-en-11-one -6,7-carbonate. As an alternative way of protecting the two hydroxy groups at carbon-6 and carbon-7, they may also be converted to dimethyl acetal during the synthetic sequence. Four compounds produced in the synthetic scheme as intermediates, namely, 9,11-dehydro-8,13-epoxy-11-methoxy-1.
    Type: Grant
    Filed: November 24, 1989
    Date of Patent: April 16, 1991
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventor: Nicholas J. Hrib
  • Patent number: 4933453
    Abstract: 3-[4-1-substituted-4-piperazinyl)butyl]-4-thiazolidinone compounds which are useful as antipsychotic, analgesic, anticonvulsant and anxiolytic agents.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: June 12, 1990
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventors: Nicholas J. Hrib, John G. Jurcak
  • Patent number: 4933476
    Abstract: Novel oxolabdanes, intermediates and processes for the preparation thereof, and methods for reducing intraocular pressure utilizing compounds or compositions thereof are disclosed.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: June 12, 1990
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventor: Nicholas J. Hrib
  • Patent number: 4897496
    Abstract: A method of regioselectively and stereoselectively synthesizing forskolin (8,13-epoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetrahydroxylabd-14-en-11-on e) from 9-deoxyforskolin (8,13-epoxy-1.alpha.,6.beta.,7.beta.-trihydroxylabd-14-en-11-one) with a good yield is described. In a preferred embodiment, it comprises an enol ether formation from 8,13-epoxy-1.alpha.,6.beta.,7.beta.-trihydroxylabd-14-en-11-one-6,7-carbon ate, oxidation of the enol ether with a suitable peroxy acid to obtain 11,12-dehydro-8,13-epoxy-11-methoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetr ahydrolabd-14-ene-6,7-carbonate and hydrolysis of the latter under an acidic condition to obtain 8,13-epoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetrahydroxylabd-11-one-6,7-c arbonate. As an alternative way of protecting the two hydroxy groups at carbon-6 and carbon-7, they may also be converted to dimethyl acetal during the synthetic sequence. Four compounds produced in the synthetic scheme as intermediates, namely, 9,11-dehydro-8,13-epoxy-11-methoxy-1.alpha.
    Type: Grant
    Filed: January 25, 1989
    Date of Patent: January 30, 1990
    Assignee: Hoechst Roussel Pharmaceuticals, Inc.
    Inventor: Nicholas J. Hrib
  • Patent number: 4888328
    Abstract: Novel alkoxycarbonylalkylalkylphospholipids and alkylaminocarbonylalkylphospholipids of the formula ##STR1## wherein A.sup.1 is a bivalent radical of the formula --C.sub.m H.sub.2m --wherein m is an integer having a value from 0 to 20, inclusive; A.sup.2 is a bivalent radical of the formula --C.sub.p H.sub.2p --wherein p is an integer having a value from 2 to 6, inclusive; X is a bivalent radial of the formula --O--or --N(R)--wherein R is selected from the group consisting of hydrogen, alkyl radicals having up to 6 carbon atoms, inclusive and phenyl radicals of the formula: ##STR2## where Z and a are as difined in the specification; Y is ##STR3## wherein R.sup.1 is an anlkyl radicals having up to 6 carbon atoms, inclusive and R.sup.2 and R.sup.3 are independently alkyl radicals having up to 6 carbon atoms, inclusive, or taken together with R.sup.1 and the nitrogen atom to which they are attached form a group of the formula ##STR4## wherein r is 0 or 1, and W is oxygen, CH.sub.2, sulfur or N(R.sup.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: December 19, 1989
    Assignee: Hoeschst-Roussel Incorporated
    Inventors: Nicholas J. Hrib, Kirk D. Shoger, John J. Tegeler
  • Patent number: 4883885
    Abstract: Novel oxolabdanes, intermediates and processes for the preparation thereof, and methods for reducing intraocular pressure utilizing compounds or compositions thereof are disclosed.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: November 28, 1989
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventor: Nicholas J. Hrib
  • Patent number: 4882440
    Abstract: A method of regioselectively and stereoselectively synthesizing forskolin (8,13-epoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetrahydroxylabd-14-en-11-on e) from 9-deoxyforskolin (8,13-epoxy-1.alpha.,6.beta.,7.beta.-trihydroxylabd-14-en-11-one) with a good yield is described. In a preferred embodiment, it comprises an enol ether formation from 8,13-epoxy-1.alpha.,6.beta.,7.beta.-trihydroxylabd-14-en-11-one-6,7-carbon ate, oxidation of the enol ether with a suitable peroxy acid to obtain 11,12-dehydro-8,13-epoxy-11-methoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetr ahydrolabd-14-ene-6,7-carbonate and hydrolysis of the latter under an acidic condition to obtain 8,13-epoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetrahydroxylabd-14-en-11-one -6,7-carbonate. As an alternative way of protecting the two hydroxy groups at carbon-6 and carbon-7, they may also be converted to dimethyl acetal during the synthetic sequence. Four compounds produced in the synthetic scheme as intermediates, namely, 9,11-dehydro-8,13-epoxy-11-methoxy-1.
    Type: Grant
    Filed: January 25, 1989
    Date of Patent: November 21, 1989
    Assignee: Heochst-Roussel Pharmaceuticals, Inc.
    Inventor: Nicholas J. Hrib
  • Patent number: 4826846
    Abstract: There are disclosed compounds of the formula ##STR1## wherein the group A is ##STR2## where R.sub.1 and R.sub.2 are each independently or loweralkyl, or R.sub.1 +R.sub.2 =(CH.sub.2).sub.m, m being 2 to 6, p is 1 or 2, and each X is independently hydrogen, loweralkyl, loweralkoxy, halogen, hydroxy, nitro, amino, loweralkylamino, diloweralkylamino, trifluoromethyl or loweralkylthio; W is O, H.sub.2 or [H, OH]; n is 2, 3 or 4; and R.sub.3 is ##STR3## where q is 1 or 2 and each Y is independently hydrogen, loweralkyl, loweralkoxy, halogen, hydroxy, nitro, amino, loweralkylamino, diloweralkylamino, triflouromethyl or loweralkylthio, which are useful as antipsychotic, anxiolytic and analgesic agents.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: May 2, 1989
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventors: Nicholas J. Hrib, John G. Jurcak
  • Patent number: 4822896
    Abstract: A method of regioselectively and stereoselectively synthesizing forskolin (8,13-epoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetrahydroxy-labd-14-en-11-o ne) from 9-deoxyforskolin (8,13-epoxy-1.alpha.,6.beta.,7.beta.-trihydroxylabd-14-en-11-one) with a good yield is described. In a preferred embodiment, it comprises an enol ether formation from 8,13-epoxy-1.alpha.,6.beta.,7.beta.-trihydroxylabd-14-en-11-one-6,7-carbon ate, oxidation of the enol ether with a suitable peroxy acid to obtain 11,12-dehydro-8,13-epoxy-11-methoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetr ahydrolabd-14-ene-6,7-carbonate and hydrolysis of the latter under an acidic condition to obtain 8,13-epoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetrahydroxylabd-14-en-11-one -6,7-carbonate. As an alternative way of protecting the two hydroxy groups at carbon-6 and carbon-7, they may also be converted to dimethyl acetal during the synthetic sequence. Four compounds produced in the synthetic scheme as intermediates, namely, 9,11-dehydro-8,13-epoxy-11-methoxy-1.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: April 18, 1989
    Assignee: Hoechst Roussel Pharmaceuticals, Inc.
    Inventor: Nicholas J. Hrib
  • Patent number: 4820826
    Abstract: A method of regioselectively and stereoselectively synthesizing forskolin (8,13-epoxy-1.alpha., 6.beta., 7.beta., 9.alpha.-tetrahydroxylabd-14-en-11-one) from 9-deoxyforskolin (8,13-epoxy-1.alpha., 6.beta., 7.beta.-trihydroxylabd-14-en-11-one) with a good yield is described. In a preferred embodiment, it comprises an enol ether formation from 8,13-epoxy-1.alpha., 6.beta., 7.beta.-trihydroxylabd-14-en-11-one-6,7-carbonate, oxidation of the enol ether with a suitable peroxy acid to obtain 11, 12-dehydro-8,13-epoxy-11-methoxy-1.alpha.,6.beta., 7.beta., 9.alpha.-tetrahydrolabd-14-ene-6,7-carbonate and hydrolysis of the latter under an acidic condition to obtain 8,13-epoxy-1.alpha., 6.beta., 7.beta., 9.alpha.-tetrahydroxylabd-14-en-11-one-6,7-carbonate. As an alternative way of protecting the two hydroxy groups at carbon-6 and carbon-7, they may also be converted to dimethyl acetal during the synthetic sequence.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: April 11, 1989
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventor: Nicholas J. Hrib
  • Patent number: 4780466
    Abstract: There are disclosed compounds of the formula ##STR1## wherein the group A is ##STR2## where R.sub.1 and R.sub.2 are each independently hydrogen or loweralkyl, or R.sub.1 +R.sub.2 =(CH.sub.2).sub.m, m being 2 to 6, p is 1 or 2, and each X is independently hydrogen, loweralkyl, loweralkoxy, halogen, hydroxy, nitro, amino, loweralkylamino, diloweralkylamino, trifluoromethyl or loweralkylthio; W is O, H.sub.2 or [H, OH]; n is 2, 3 or 4; and R.sub.3 is ##STR3## where q is 1 or 2 and each Y is independently hydrogen, loweralkyl, loweralkoxy, halogen, hydroxy, nitro, amino, loweralkylamino, diloweralkylamino, trifluoromethyl or loweralkylthio, which are useful as antipsychotic, anxiolytic and analgesic agents.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: October 25, 1988
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventors: Nicholas J. Hrib, John G. Jurcak
  • Patent number: 4740522
    Abstract: Novel oxolabdanes, intermediates and processes for the preparation thereof, and methods for reducing intraocular pressure utilizing compounds or compositions thereof are disclosed.
    Type: Grant
    Filed: August 28, 1986
    Date of Patent: April 26, 1988
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventor: Nicholas J. Hrib
  • Patent number: 4734513
    Abstract: A method of regioselectively and stereoselectively synthesizing forskolin (8,13-epoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetrahydroxylabd-14-en-11-on e) from 9-deoxyforskolin (8,13-epoxy-1.alpha.,6.beta.,7.beta.-trihydroxylabd-14-en-11-one) with a good yield is described. In a preferred embodiment, it comprises an enol ether formation from 8,13-epoxy-1.alpha.,6.beta.,7.beta.-trihydroxylabd-14-en-11-one-6,7-carbon ate, oxidation of the enol ether with a suitable peroxy acid to obtain 11,12-dehydro-8,13-epoxy-11-methoxy-1.alpha.,6.beta.,7.beta.,9.beta.-tetra hydrolabd-14-ene-6,7-carbonate and hydrolysis of the latter under an acidic condition to obtain 8,13-epoxy-1.alpha.,6.beta.,7.beta.,9.alpha.-tetrahydroxylabd-14-en-11-one -6,7-carbonate. As an alternative way of protecting the two hydroxy groups at carbon-6 and carbon-7, they may also be converted to dimethyl acetal during the synthetic sequence. Four compounds produced in the synthetic scheme as intermediates, namely, 9,11-dehydro-8,13-epoxy-11-methoxy-1.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: March 29, 1988
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventor: Nicholas J. Hrib