Patents by Inventor Ravindranathan Thottapillil

Ravindranathan Thottapillil 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).

  • Process for the preparation of 1-[cyano(aryl)methyl] cyclohexanol
    Patent number: 6504044
    Abstract: A process for the preparation of 1-[(cyano) aryl methyl] cyclohexanol of the general formula 1 (1a-d) by reacting cyclohexanone with the carbanions of an aryl acetonitrile of the general formula 3 (3a-d), a) R1=H, R2=H b) R1=OMe R2=H c) R1=OMe R2=OMe d) R1=OMe R2=cyclopentyloxy using a base, isolating the compound of formula 1 and purifying the compound of formula 1a-d by crystallisation is disclosed.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: January 7, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Subhash Prataprao Chavan, Subhash Krishnaji Kamat, Latha Sivadasan, Kamalam Balakrishnan, Dushant Anandrao Khobragade, Ravindranathan Thottapillil, Mukund Keshao Gurjar, Uttam Ramrao Kalkote
  • Process for the preparation of 4(R)-hydroxy cyclopent-2-en1(S)-acetate
    Patent number: 6448051
    Abstract: The present invention relates to a process for the preparation of 4-(R)-hydroxycyclopent-2-en-1 (S)-acetate of the formula 2 by reacting meso-cyclopent-2-en-1, 4-diacetate of formula 1 with a whole cell enzyme in a mixture of a buffer and an organic solvent, filtering the reaction mixture to remove the enzyme, extracting the resultant compound with an organic solvent, and removing the solvent to obtain the desired product.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: September 10, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Kulbhussan Balwant Bastawade, Digambar Vitthal Gokhale, Ravindranathan Thottapillil, Sandeep Raghunath Ghorpade, Rohini Ramesh Joshi, Uttam Ramrao Kalkote
  • Process for the preparation of 1-[cyano(aryl)methyl] cyclohexanol
    Publication number: 20020120164
    Abstract: A process for the preparation of 1-[(cyano) aryl methyl] cyclohexanol of the general formula 1 (1a-d) by reacting cyclohexanone with the carbanions of an aryl acetonitrile of the general formula 3 (3a-d), 1
    Type: Application
    Filed: February 28, 2001
    Publication date: August 29, 2002
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Subhash Prataprao Chavan, Subhash Krishnaji Kamat, Latha Sivadasan, Kamalam Balakrishnan, Dushant Anandrao Khobragade, Ravindranathan Thottapillil, Mukund Keshao Gurjar, Uttam Ramrao Kalkote
  • One pot process for the preparation of 1-[2-dimethylamino-(4-methoxyphenyl)-ethyl]cyclohexanol
    Patent number: 6350912
    Abstract: A process for the preparation of 2-[dimethylamino-(4-methoxyphenyl)ethyl]-cyclohexanol of formula 1 by reducing 1-[cyano(4-methoxyphenyl)-methyl]cyclohexanol of formula 2 with a formylating agent in a protic solvent in the presence of a catalyst, removing the catalyst by filtration, isolating and purifying the compound of formula 1 is disclosed.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: February 26, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Subhash Prataprao Chavan, Subhash Krishnaji Kamat, Latha Sivadasan, Kamalam Balakrishnan, Dushant Anandrao Khobragade, Ravindranathan Thottapillil, Mukund Keshao Gurjar, Uttam Ramrao Kalkote