Patents by Inventor K.S. Murthy

K.S. Murthy 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: 20070207990
    Abstract: A process for the preparation of aminoalkyl phenyl carbamate compounds of Formula I, wherein R1 and R2 independently are hydrogen or a C1-6 alkyl; R3 and R4 are the same or different and each is a C1-6 alkyl; or R3 and R4 together with the nitrogen to which they are attached form a cyclic three to eight membered ring, with or without a heteroatom like nitrogen or oxygen; R5 and R6 independently are hydrogen, linear, branched or cyclic C1-6 alkyl; or R5 and R6 together with the nitrogen to which they are attached form a cyclic three to eight membered ring, with or without a heteroatom like nitrogen or oxygen; the carbon centre designated “*” can be racemic or enantiomerically enriched in the (R)— or (S)-configuration; and pharmaceutically acceptable acid addition salts thereof.
    Type: Application
    Filed: March 2, 2006
    Publication date: September 6, 2007
    Inventors: Zhi-Xian Wang, Stephen Horne, K.S. Murthy
  • Publication number: 20060205947
    Abstract: A process for the preparation of an acid addition salt of ziprasidone base and intermediates thereof comprising exposing the ziprasidone base in solid form to a gaseous acid in a substantially dry environment.
    Type: Application
    Filed: June 29, 2005
    Publication date: September 14, 2006
    Inventors: Allan Rey, Lotfi Derdour, K.S. Murthy, Probal Datta, Martin Ehlert, Stephen Home
  • Publication number: 20060205944
    Abstract: A process for the preparation of an acid addition salt of an organic base comprising exposing the organic base in solid form to a gaseous acid, with the proviso that ziprasidone, its acid addition salts and intermediates thereof are excluded.
    Type: Application
    Filed: June 29, 2005
    Publication date: September 14, 2006
    Inventors: Allan Rey, Lotfi Derdour, K.S. Murthy, Probal Datta, Martin Ehlert, Stephen Home
  • Publication number: 20050203302
    Abstract: A process for preparing (R)-5-[2-(4-fluorophenyl)-5-(1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrol-1-yl]-5-hydroxy-3-oxo-1-heptanoic acid, tert-butylester comprising: (a) reduction of 5-[2-(4-fluorophenyl)-5-(1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrol-1-yl]-3-oxo-1-pentanoic acid, (R)-2-hydroxy-1,2,2-triphenylethyl ester; (b) hydrolysis of (R)-5-[2-(4-fluorophenyl)-5-(1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrol-1-yl]-3-hydroxy-1-pentanoic acid, (R)-2-hydroxy-1,2,2-triphenylethyl ester using an alkali base in a solvent to form the acid; (c) alkylation of the acid forming (R)-5-[2-(4-fluorophenyl)-5-(1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrol-1-yl]-5-hydroxy-3-oxo-1-heptanoic acid, tert-butylester.
    Type: Application
    Filed: March 16, 2004
    Publication date: September 15, 2005
    Inventors: Bhaskar Guntoori, Daqing Che, Fan Wang, Yajun Zhao, K.S. Murthy, Stephen Horne
  • Publication number: 20050165242
    Abstract: A process for the preparation of amorphous atorvastatin calcium and hydrates thereof, which comprises: (a) hydrolysis of the precursor lactone using sodium hydroxide to form atorvastatin sodium salt solution; (b) addition of the atorvastatin sodium salt solution to a calcium chloride or calcium acetate solution in the absence or presence of seeds of amorphous atorvastatin calcium; and (c) isolation of the resultant amorphous atorvastatin calcium salt by filtration and drying.
    Type: Application
    Filed: February 5, 2004
    Publication date: July 28, 2005
    Inventors: Daqing Che, Aaron Kinsman, Bhaskar Guntoori, K.S. Murthy