Patents by Inventor Asish Kumar Bhattacharya

Asish Kumar Bhattacharya 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: 11365202
    Abstract: The present invention provides a new artemisinin-dipeptidyl vinyl based compound of Formula (I) or a pharmaceutically acceptable salt thereof and a process for the preparation thereof. The present invention further also provides a pharmaceutical composition comprising compounds of Formula (I) or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier, diluent or excipient to treat malaria.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: June 21, 2022
    Assignees: Council of Scientific and Industrial Research, International Centre for Genetic Engineering and Biotechnology (ICGEB)
    Inventors: Asish Kumar Bhattacharya, Eswar Kumar Aratikatla, Pawan Malhotra, Asif Mohmmed
  • Patent number: 11059848
    Abstract: The present invention relates to artemisinic acid glycoconjugate compounds. More particularly, the present invention relates to a glycoconjugate compound of formula (I) and a process for the preparation of artemisinic acid glycoconjugate compound of formula (I) by using 1,3-dipolar cycloaddition chemistry starting from artemisinic acid.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: July 13, 2021
    Inventors: Asish Kumar Bhattacharya, Tharun Kumar Kotammagari, Manas Kumar Santra
  • Publication number: 20210101907
    Abstract: The present invention provides a new artemisinin-dipeptidyl vinyl based compound of Formula (I) or a pharmaceutically acceptable salt thereof and a process for the preparation thereof. The present invention further also provides a pharmaceutical composition comprising compounds of Formula (I) or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier, diluent or excipient to treat malaria.
    Type: Application
    Filed: April 16, 2019
    Publication date: April 8, 2021
    Inventors: Asish Kumar Bhattacharya, Eswar Kumar Aratikatla, Pawan Malhotra, Asif Mohmmed
  • Publication number: 20200331953
    Abstract: The present invention relates to artemisinic acid glycoconjugate compounds. More particularly, the present invention relates to a glycoconjugate compound of formula (I) and a process for the preparation of artemisinic acid glycoconjugate compound of formula (I) by using 1,3-dipolar cycloaddition chemistry starting from artemisinic acid.
    Type: Application
    Filed: January 3, 2019
    Publication date: October 22, 2020
    Inventors: Asish Kumar BHATTACHARYA, Tharun Kumar KOTAMMAGARI, Manas Kumar SANTRA
  • Patent number: 10774043
    Abstract: The present invention discloses compounds of Formula I, wherein each of R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from H, OBn, OH, CH2OBn, CH2OH, CH3; R9 is selected from alkyl, substituted alkyl, hydroxyl alkyl, alkenyl, benzyl; process for preparation of N-alkylated glycolactam compounds of Formula I and their use for the synthesis of piperidine alkaloids and their analogues.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: September 15, 2020
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Asish Kumar Bhattacharya, Hemender Rami Chand
  • Patent number: 10519098
    Abstract: The present invention discloses anti-malarial compound of formula (I) Formula (I) wherein, X is selected from O or NH; R1, R2, R3, R4 and R5 is selected from H or OMe or CH3, —CH2—O—CH2— or —CH?CH—CH?CH—; Y is selected from O or NH and R6, R7 is selected from the following compounds: or pharmaceutically acceptable salts thereof, process for preparation and a pharmaceutical composition containing the same.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: December 31, 2019
    Assignee: Council of Scientific & Industrial Research
    Inventors: Asish Kumar Bhattacharya, Eswar Kumar Aratikatla, Kumkum Srivastava, Ashan Manhas
  • Publication number: 20190194133
    Abstract: The present invention discloses compounds of Formula I, Wherein, R1?R2?R3?R4?R5?R6?R7?R8 and is selected from H, OBn, OH, CH2OH, CH2OH, CH3; R9 is selected front alkyl, substituted alkyl, hydroxyl alkyl, alkenyl, benzyl; process for preparation of N-alkylated glycolactain compounds of Formula I and their use for the synthesis of piperidine alkaloids and their analogues.
    Type: Application
    Filed: May 5, 2017
    Publication date: June 27, 2019
    Inventors: Asish Kumar BHATTACHARYA, Hemender Rami CHAND
  • Publication number: 20190106380
    Abstract: The present invention discloses anti-malarial compound of formula (I) Formula (I) wherein, X is selected from O or NH; R1, R2, R3, R4 and R5 is selected from H or OMe or CH3, —CH2—O—CH2— or —CH?CH—CH?CH—; Y is selected from O or NH and R6, R7 is selected from the following compounds: or pharmaceutically acceptable salts thereof, process for preparation and a pharmaceutical composition containing the same.
    Type: Application
    Filed: October 21, 2015
    Publication date: April 11, 2019
    Applicants: Council of Scientific & Industrial Research, Council of Scientific & Industrial Research
    Inventors: Asish Kumar Bhattacharya, Eswar Kumar Aratikatla, Kumkum Srivastava, Ashan Manhas
  • Patent number: 9834515
    Abstract: The present invention discloses a process for synthesis of piperidine alkaloids selected from fagomine, 4-epi-fagomine and nojirimycin from tri-O-benzyl-D-glucal or tri-O-benzyl-D-galactal.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: December 5, 2017
    Assignee: Council of Scientific and Industrial Research
    Inventors: Asish Kumar Bhattacharya, Hemender Rami Chand
  • Publication number: 20170267636
    Abstract: The present invention discloses a process for synthesis of piperidine alkaloids selected from fagomine, 4-epi-fagomine and nojirimycin from tri-O-benzyl-D-glucal or tri-O-benzyl-D-galactal.
    Type: Application
    Filed: May 5, 2015
    Publication date: September 21, 2017
    Inventors: Asish Kumar Bhattacharya, Hemender Rami Chand
  • Patent number: 7135590
    Abstract: This invention provides a plant growth regulatory activity of a new biologically active synthetic molecule methanone-(3?,4?,5?-trimethoxy) phenyl, 1-naphthyl, 2-O-4?-ethyl but-2?-enoate. More particularly, the invention relates to the potent plant growth promoting activity of a gallic acid derivative having a structure represented by Formula 1 and a molecular formulae C26H26O7. This invention also provides a novel process for preparation of said molecule from a naturally occurring compound and testing it for growth regulating activity using Bacopa test system developed at CIMAP (Khanuja et al.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: November 14, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Suman Preet Singh Khanuja, Mahendra Pandurang Darokar, Ankur Garg, Togarrati Padmapriya, Ajit Kumar Shasany, Arvind Singh Negi, Sunia Kumar Chattopadhyay, Kachin Srivastava, Asish Kumar Bhattacharya
  • Patent number: 7053218
    Abstract: Demethylation of 3?, 4?-dimethoxy or 3?, 4?, 5?-trimethoxy benzoic ester of a phenol is carried out in the presence of an excess of aluminum halide in an organic solvent to get 4?-Hydroxy, 3?-methoxy or 4? hydroxy, 3?, 5?-dimethoxy benzoic acid ester of a phenol. The reaction is also applicable to 3?, 4?, 5?-trimethoxy diaryl ketone and some natural products like reserpine.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: May 30, 2006
    Assignee: Council of Scientific & Industrial Research
    Inventors: Arvind Singh Negi, Sunil Kumar Chattopadhyay, Sachin Srivastava, Asish Kumar Bhattacharya
  • Patent number: 6127405
    Abstract: The present invention relates to use .alpha.-arteether as a antibacterial agent, preferably for gyr mutant bacteria which are resistant to quinolone drugs and can be used as therapeutic agents for treating drug resistant bacterial infections, and also as a antifungal agent.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: October 3, 2000
    Assignee: Council of Scientific and Industrial Research
    Inventors: Sushil Kumar, Suman Preet Singh Khanuja, Tiruppadiripuliyur Ranganathan Santha Kumar, Dharam Chand Jain, Suchi Srivastava, Asish Kumar Bhattacharya, Dharmendra Saikia, Ajit Kumar Shasany, Mahendra Pandurang Darokar, Ram Prakash Sharma
  • Patent number: 5955084
    Abstract: This invention relates to a novel process for the dual production of essential oil and artemisinin from the plant Artemisia annua, said process comprising extracting the plant with hexane, partitioning the hexane extract between hexane and acetonitrile, hydrodistillation of hexane residue and Marc to yield essential oil, further fractionation of acetonitrile solvent between hexane-benzene mixture to remove artemisinic acid, chromatographing of the acetonitrile phase to produce substantially pure artemisinin, the artemisinic acid is reduced to obtain dihydro artemisinic acid which is then oxidised in a single step to form artemisinin.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: September 21, 1999
    Inventors: Dharam Chand Jain, Sudeep Tandon, Rajendra Singh Bhakuni, Mohammed Shafique Siddique, Atul Prakash Kahol, Ram Prakash Sharma, Sushil Kumar, Asish Kumar Bhattacharya