Patents by Inventor Anil Purushottam Joshi

Anil Purushottam Joshi 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).

  • Preparation of dihydropyridines
    Patent number: 8455655
    Abstract: The invention relates to a method and compounds for the preparation of clevidipine butyrate, a very short acting hypertensive calcium antagonist, as well as the synthesis of these compounds useful for the preparation of clevidipine (also known as clevidipine butyrate). Moreover the invention also discloses polymorphic forms of clevidipine butyrate, useful for the preparation of pharmaceutical compositions, and processes to prepare them.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: June 4, 2013
    Assignee: Laboratorios Lesvi, S.L.
    Inventors: Ravindranath Vishnu Newadkar, Anil Purushottam Joshi, Santosh Kumar Singh
  • PREPARATION OF DIHYDROPYRIDINES
    Publication number: 20110275825
    Abstract: The invention relates to a method and compounds for the preparation of clevidipine butyrate, a very short acting hypertensive calcium antagonist, as well as the synthesis of these compounds useful for the preparation of clevidipine (also known as clevidipine butyrate). Moreover the invention also discloses polymorphic forms of clevidipine butyrate, useful for the preparation of pharmaceutical compositions, and processes to prepare them.
    Type: Application
    Filed: May 6, 2011
    Publication date: November 10, 2011
    Applicant: LABORATORIOS LESVI, S.A.
    Inventors: RAVINDRANATH VISHNU NEWADKAR, Anil Purushottam Joshi, Santosh Kumar Singh
  • Process for preparation of 4-amino-1-isobutyl-1H-imidazo[4,5-C]-quinoline (Imiquimod)
    Patent number: 7678912
    Abstract: A process for preparation of 1-isobutyl-1H-imidazo-[4,5-c]-quinoline-5-N-oxide, comprising oxidation of 1-isobutyl-1H-imidazoquinoline with meta-chloroperbenzoic acid.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: March 16, 2010
    Assignee: USV, Ltd.
    Inventors: Venkatasubramanian Radhakrishnan Tarur, Suresh Mahadev Kadam, Anil Purushottam Joshi, Sachin Baban Gavhane
  • Process for Preparation of 4-amino-1-isobutyl-1H-Imidazo[4,5-C]-quinoline (Imiquimod)
    Publication number: 20090209764
    Abstract: A process for the preparation of imiquimod comprising oxidation of 1-Isobutyl-1H-imidazo quinoline quinoline (II) afforded 1-Isobutyl-1H-imidazo-[4,5-c]-quinoline-5-N-oxide (III) which is isolated in pure form as its hydrochloride salt (IV) followed by conversion to 4-chloro derivative (V) and conversion to corresponding 4-iodo derivative (VI) which is a new intermediate. This new intermediate in convened to imiquimod (VIII) and purified via its novel maleate salt.
    Type: Application
    Filed: April 6, 2009
    Publication date: August 20, 2009
    Inventors: Venkatasubramanian Radhakrishnan Tarur, Suresh Mahadev Kadam, Anil Purushottam Joshi, Sachin Baban Gavhane
  • Novel Process for Preparation of Bicalutamide
    Publication number: 20080177109
    Abstract: The present invention discloses a process for the synthesis of N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)sulphonyl]-2-hydroxy-2-methyl propanamide (Form I). The invention discloses a reagent for oxidation of N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)thio]-2-hydroxy-2-methyl propanamide to N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)sulphonyl]-2-hydroxy-2-methyl propanamide. More particularly, the invention discloses a method of purification of N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)sulphonyl]-2-hydroxy-2-methyl propanamide in a mixture of methylethyl ketone and hexane giving form (I). This form (I) is useful as an active pharmaceutical and has antiandrogenic activity.
    Type: Application
    Filed: May 10, 2005
    Publication date: July 24, 2008
    Applicant: USV LIMITED
    Inventors: Venkatasubramanian Radhakrishnan Tarur, Suresh Mahadev Kadam, Anil Purushottam Joshi, Sachin Baban Gavhane