Patents by Inventor Ravindra Vitthal DATAR

Ravindra Vitthal DATAR 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: 11319277
    Abstract: The present invention relates to a novel process for converting the unwanted S enantiomer form to its useful raceme with respect to a 4-aminoindane derivative and to novel intermediates of said process.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: May 3, 2022
    Assignee: FMC Corporation
    Inventors: Narayana Swamy, Chokalingam Devarajan, Ravindra Vitthal Datar
  • Publication number: 20220002225
    Abstract: A compound of Formula (VI), wherein ‘n’ and ‘R’ are selected so that the compound comprises 1-acetyl-6-fluoro-2,2,4-trimethyl-1,2,3,4-tetrahydroquinoline of Formula (IX):
    Type: Application
    Filed: September 15, 2021
    Publication date: January 6, 2022
    Inventors: Paolo BELLANDI, Giampaolo ZANARDI, Ravindra Vitthal DATAR, Chockalingam DEVARAJAN, Swamynathan MURALI, Narayana SWAMY
  • Patent number: 11208374
    Abstract: The present invention relates to N-(7-fluoro-1,1,3-trimethyl-1H-inden-4yl) amides and a process for preparing same. The novel amides are useful in a process for converting the unwanted S enantiomer form of a 4-aminoindane derivative to its useful raceme.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: December 28, 2021
    Assignee: FMC Corporation
    Inventors: Narayana Swamy, Chokalingam Devarajan, Ravindra Vitthal Datar
  • Patent number: 11148995
    Abstract: A process for preparation of 4-aminoindane compounds of a first formula, salts and enantiomers thereof including: a) hydrogenating a 1,2-dihydroquinoline of a second formula to give a corresponding tetrahydroquinoline of a third formula; b) acylating the tetrahydroquinoline of the third formula with a carboxylic acid derivative of a fourth formula to obtain a corresponding acyl derivative compound of a fifth formula; c) rearranging the acyl derivative compound of the fifth formula under acidic conditions so as to give an acyl indane compound of a sixth formula or an addition salt thereof; and d) hydrolysing the acyl group of the acyl indane compound of the sixth formula so as to obtain the 4-aminoindane derivatives of the first formula.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: October 19, 2021
    Assignee: STICHTING I-F PRODUCT COLLABORATION
    Inventors: Paolo Bellandi, Giampaolo Zanardi, Ravindra Vitthal Datar, Chockalingam Devarajan, Swamynathan Murali, Narayana Swamy
  • Publication number: 20200231533
    Abstract: A process for preparation of 4-aminoindane compounds of a first formula, salts and enantiomers thereof including: a) hydrogenating a 1,2-dihydroquinoline of a second formula to give a corresponding tetrahydroquinoline of a third formula; b) acylating the tetrahydroquinoline of the third formula with a carboxylic acid derivative of a fourth formula to obtain a corresponding acyl derivative compound of a fifth formula; c) rearranging the acyl derivative compound of the fifth formula under acidic conditions so as to give an acyl indane compound of a sixth formula or an addition salt thereof; and d) hydrolysing the acyl group of the acyl indane compound of the sixth formula so as to obtain the 4-aminoindane derivatives of the first formula.
    Type: Application
    Filed: March 31, 2020
    Publication date: July 23, 2020
    Inventors: Paolo BELLANDI, Giampaolo ZANARDI, Ravindra Vitthal DATAR, Chockalingam DEVARAJAN, Swamynathan MURALI, Narayana SWAMY
  • Publication number: 20200157039
    Abstract: The present invention relates to a novel process for converting the unwanted S enantiomer form to its useful raceme with respect to a 4-aminoindane derivative and to novel intermediates of said process.
    Type: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    Inventors: Narayana Swamy, Chokalingam Devarajan, Ravindra Vitthal Datar
  • Patent number: 10640454
    Abstract: A process for preparation of 4-aminoindane derivatives of a first formula, salts and enantiomers thereof comprising the steps of: a) hydrogenating a 1,2-dihydroquinoline of a second formula to give a corresponding tetrahydroquinoline of a third formula; b) acylating the tetrahydroquinoline of the third formula with a carboxylic acid derivative of a fourth formula to obtain a corresponding acyl derivative compound of a fifth formula; c) rearranging the acyl derivative compound of the fifth formula under acidic conditions so as to give an acyl indane compound of a sixth formula; and d) hydrolysing the acyl group of the acyl indane compound of the sixth formula so as to obtain the 4-aminoindane derivatives of the first formula.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: May 5, 2020
    Assignee: STICHTING I-F PRODUCT COLLABORATION
    Inventors: Paolo Bellandi, Giampaolo Zanardi, Ravindra Vitthal Datar, Chockalingam Devarajan, Swamynathan Murali, Narayana Swamy
  • Patent number: 10570086
    Abstract: The present invention relates to a novel process for converting the unwanted S enantiomer form to its useful raceme with respect to a 4-aminoindane derivative.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: February 25, 2020
    Assignee: FMC Corporation
    Inventors: Narayana Swamy, Chokalingam Devarajan, Ravindra Vitthal Datar
  • Publication number: 20200055809
    Abstract: The present invention relates to a novel process for converting the unwanted S enantiomer form to its useful raceme with respect to a 4-aminoindane derivative and to novel intermediates of said process.
    Type: Application
    Filed: October 28, 2019
    Publication date: February 20, 2020
    Inventors: Narayana Swamy, Chokalingam Devarajan, Ravindra Vitthal Datar
  • Publication number: 20190119195
    Abstract: A process for preparation of 4-aminoindane derivatives of a first formula, salts and enantiomers thereof comprising the steps of: a) hydrogenating a 1,2-dihydroquinoline of a second formula to give a corresponding tetrahydroquinoline of a third formula; b) acylating the tetrahydroquinoline of the third formula with a carboxylic acid derivative of a fourth formula to obtain a corresponding acyl derivative compound of a fifth formula; c) rearranging the acyl derivative compound of the fifth formula under acidic conditions so as to give an acyl indane compound of a sixth formula; and d) hydrolysing the acyl group of the acyl indane compound of the sixth formula so as to obtain the 4-aminoindane derivatives of the first formula.
    Type: Application
    Filed: April 15, 2016
    Publication date: April 25, 2019
    Inventors: Paolo BELLANDI, Giampaolo ZANARDI, Ravindra Vitthal DATAR, Chockalingam DEVARAJAN, Swamynathan MURALI, Narayana SWAMY