Patents by Inventor Rong Ling

Rong Ling 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: 20240092747
    Abstract: The present invention is directed to novel chemical compositions of matter, and in particular a novel MDMA class of compounds MDMA analogs having 1,3-benzothiazoles substituted at the 5 and 6-position with a MDMA basic or modified side chain.
    Type: Application
    Filed: July 27, 2023
    Publication date: March 21, 2024
    Inventors: Denton W. Hoyer, Robert F. Roscow, Rong Ling, Chuanjun Gao
  • Patent number: 11896577
    Abstract: The present invention is directed to novel chemical compositions of matter, and in particular novel MDMA class of compounds having substituted methylenedioxyphenethylamine and substituted amphetamine, having a metabolically labile thioether group.
    Type: Grant
    Filed: June 13, 2023
    Date of Patent: February 13, 2024
    Assignee: Mydecine Innovations Group Inc.
    Inventors: Denton W. Hoyer, Robert F. Roscow, Rong Ling, Chuanjun Gao
  • Publication number: 20240018117
    Abstract: The present invention includes a novel class of MDMA carbamates that can be activated in vivo as prodrugs. The MDMA prodrugs of the invention are enzymatically cleaved in vivo and produce alcohols of low toxicity that are well tolerated and metabolized in humans.
    Type: Application
    Filed: July 26, 2023
    Publication date: January 18, 2024
    Inventors: Denton W. Hoyer, Robert F. Roscow, Rong Ling, Chuanjun Gao
  • Publication number: 20230321034
    Abstract: The present invention is directed to novel chemical compositions of matter, and in particular novel MDMA class of compounds having substituted methylenedioxyphenethylamine and substituted amphetamine, having a metabolically labile thioether group.
    Type: Application
    Filed: June 13, 2023
    Publication date: October 12, 2023
    Inventors: Denton W. Hoyer, Robert F. Roscow, Rong Ling, Chuanjun Gao
  • Publication number: 20220371997
    Abstract: Methods for preparing 5-fluoro-6-(bromo or chloro)picloram analogs, or derivatives thereof, from picloram acid, picloram ester, or the nitrile analog of picloram are provided. The methods include chemical process steps that: (1) introduce a phthaloyl group onto the 4-amino substituent of picloram acid, picloram ester, or the nitrile analog of picloram, (2) add 2 fluorine atoms at the 5,6-positions of the pyridine ring using halex fluorination chemistry, (3) remove the phthaloyl group, hydrolyze the ester or nitrile substituent, and add chlorine or bromine to the 6-position by treatment with an acid and water, and finally, (4) esterify the 5-fluoro-6-(bromo or chloro)picloram acid produced in step (3) to a 5-fluoro-6-(bromo or chloro)picloram ester.
    Type: Application
    Filed: June 23, 2022
    Publication date: November 24, 2022
    Applicant: CORTEVA AGRISCIENCE LLC
    Inventors: JAYACHANDRAN DEVARAJ, NUGZAR GHAVTADZE, NICHOLAS M. IRVINE, JEREMY KISTER, MELISSA LEE, RONALD B. LENG, RONGRONG [MANDY] LIN, RONG LING, NOORMOHAMED M. NIYAZ, ABRAHAM D. SCHUITMAN, AARON A. SHINKLE, SIYU TU, GREGORY T. WHITEKER, CHUNMING ZHANG
  • Patent number: 11401242
    Abstract: Methods for preparing 5-fluoro-6-(bromo or chloro)picloram analogs, or derivatives thereof, from picloram acid, picloram ester, or the nitrile analog of picloram are provided. The methods include chemical process steps that: (1) introduce a phthaloyl group onto the 4-amino substituent of picloram acid, picloram ester, or the nitrile analog of picloram, (2) add 2 fluorine atoms at the 5,6-positions of the pyridine ring using halex fluorination chemistry, (3) remove the phthaloyl group, hydrolyze the ester or nitrile substituent, and add chlorine or bromine to the 6-position by treatment with an acid and water, and finally, (4) esterify the 5-fluoro-6-(bromo or chloro)picloram acid produced in step (3) to a 5-fluoro-6-(bromo or chloro)picloram ester.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: August 2, 2022
    Assignee: Corteva Agriscience LLC
    Inventors: Jayachandran Devaraj, Nugzar Ghavtadze, Nicholas M. Irvine, Jeremy Kister, Melissa Lee, Ronald B. Leng, Rongrong [Mandy] Lin, Rong Ling, Noormohamed M. Niyaz, Abraham D. Schuitman, Aaron A. Shinkle, Siyu Tu, Gregory T. Whiteker, Chunming Zhang
  • Publication number: 20210323923
    Abstract: Methods for preparing 5-fluoro-6-(bromo or chloro)picloram analogs, or derivatives thereof, from picloram acid, picloram ester, or the nitrile analog of picloram are provided. The methods include chemical process steps that: (1) introduce a phthaloyl group onto the 4-amino substituent of picloram acid, picloram ester, or the nitrile analog of picloram, (2) add 2 fluorine atoms at the 5,6-positions of the pyridine ring using halex fluorination chemistry, (3) remove the phthaloyl group, hydrolyze the ester or nitrile substituent, and add chlorine or bromine to the 6-position by treatment with an acid and water, and finally, (4) esterify the 5-fluoro-6-(bromo or chloro)picloram acid produced in step (3) to a 5-fluoro-6-(bromo or chloro)picloram ester.
    Type: Application
    Filed: September 18, 2019
    Publication date: October 21, 2021
    Applicant: Corteva Agriscience LLC
    Inventors: Jayachandran Devaraj, Nugzar Ghavtadze, Nicholas M. Irvine, Jeremy Kister, Melissa Lee, Ronald B. Leng, Rongrong [Mandy] Lin, Rong Ling, Noormohamed M. Niyaz, Abraham D. Schuitman, Aaron A. Shinkle, Siyu Tu, Gregory T. Whiteker, Chunming Zhang
  • Patent number: 10544146
    Abstract: A compound of formula (I): wherein: M is hydrogen or a pharmaceutically acceptable salt-forming cation; Y is OR1 or NR2R3, and R1 ,R2, R3 and M are as defined herein. Also, methods of treating bacterial infection, pharmaceutical compositions, molecular complexes and processes for preparing compounds.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: January 28, 2020
    Assignee: FEDORA PHARMACEUTICALS INC.
    Inventors: Samarendra N. Maiti, Dai Nguyen, Jehangir Khan, Rong Ling
  • Publication number: 20180305359
    Abstract: A compound of formula (I): wherein: M is hydrogen or a pharmaceutically acceptable salt-forming cation; Y is OR1 or NR2R3, and R1 ,R2, R3 and M are as defined herein. Also, methods of treating bacterial infection, pharmaceutical compositions, molecular complexes and processes for preparing compounds.
    Type: Application
    Filed: June 28, 2018
    Publication date: October 25, 2018
    Applicant: FEDORA PHARMACEUTICALS INC.
    Inventors: Samarendra N. MAITI, Dai NGUYEN, Jehangir KHAN, Rong LING
  • Patent number: 10030019
    Abstract: A compound of formula (I): wherein: M is hydrogen or a pharmaceutically acceptable salt-forming cation; Y is OR1 or NR2R3, and R1, R2, R3 and M are as defined herein. Also, methods of treating bacterial infection, pharmaceutical compositions, molecular complexes and processes for preparing compounds.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: July 24, 2018
    Assignee: FEDORA PHARMACEUTICALS INC.
    Inventors: Samarendra N. Maiti, Dai Nguyen, Jehangir Khan, Rong Ling
  • Patent number: 9751894
    Abstract: Cephem compounds, pharmaceutically acceptable salts thereof, and methods of using same, wherein the compound has a bicyclic nitrogen-containing aromatic heterocyclic ring as the quaternary ammoniomethyl group at the 3-position and one or both of a terminal amidine residue (substituted or unsubstituted) attached to an aryl or a 5- or 6-membered heteroaryl group (substituted or unsubstituted) which is further attached through a spacer to the free N-atom of the quaternary nitrogen-containing bicyclic ring at the 3-side chain, or a terminal guanidine residue attached to an aryl or a 5- or 6-membered heteroaryl group (substituted or unsubstituted) which is further attached through a spacer to the free N-atom of the quaternary nitrogen-containing bicyclic ring at the 3-side chain.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: September 5, 2017
    Assignee: NAEJA-RGM PHARMACEUTICALS INC.
    Inventors: Samarendra Nath Maiti, Dai Quoc Nguyen, Andhe V. N. Reddy, Judy Yip, Chan Minh Ha, Rong Ling, Rudong Shan, Madhava Reddy Madala
  • Publication number: 20170166587
    Abstract: Cephem compounds, pharmaceutically acceptable salts thereof, and methods of using same, wherein the compound has a bicyclic nitrogen-containing aromatic heterocyclic ring as the quaternary ammoniomethyl group at the 3-position and one or both of a terminal amidine residue (substituted or unsubstituted) attached to an aryl or a 5- or 6-membered heteroaryl group (substituted or unsubstituted) which is further attached through a spacer to the free N-atom of the quaternary nitrogen-containing bicyclic ring at the 3-side chain, or a terminal guanidine residue attached to an aryl or a 5- or 6-membered heteroaryl group (substituted or unsubstituted) which is further attached through a spacer to the free N-atom of the quaternary nitrogen-containing bicyclic ring at the 3-side chain.
    Type: Application
    Filed: December 5, 2016
    Publication date: June 15, 2017
    Inventors: Samarendra Nath MAITI, Dai Quoc NGUYEN, Andhe V.N. REDDY, Judy YIP, Chan Minh HA, Rong LING, Rudong SHAN, Madhava Reddy MADALA
  • Patent number: 9505761
    Abstract: New bicyclic compounds, their preparation, and their use as antibacterial agents, either alone or in combination with an antibiotic for the treatment of infections caused by ?-lactamase-producing pathogenic bacteria, are described.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: November 29, 2016
    Assignee: FEDORA PHARMACEUTICALS INC.
    Inventors: Samarendra N. Maiti, Dai Nguyen, Jehangir Khan, Rong Ling
  • Publication number: 20160297817
    Abstract: A compound of formula (I): wherein: M is hydrogen or a pharmaceutically acceptable salt-forming cation; Y is OR1 or NR2R3, and R1, R2, R3 and M are as defined herein. Also, methods of treating bacterial infection, pharmaceutical compositions, molecular complexes and processes for preparing compounds.
    Type: Application
    Filed: June 2, 2016
    Publication date: October 13, 2016
    Applicant: FEDORA PHARMACEUTICALS INC.
    Inventors: Samarendra N. MAITI, Dai NGUYEN, Jehangir KHAN, Rong LING
  • Patent number: 9393239
    Abstract: A compound of formula (I): wherein: M is hydrogen or a pharmaceutically acceptable salt-forming cation; Y is OR1 or NR2R3, and R1, R2, R3 and M are as defined herein. Also, methods of treating bacterial infection, pharmaceutical compositions, molecular complexes and processes for preparing compounds.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: July 19, 2016
    Assignee: FEDORA PHARMACEUTICALS INC.
    Inventors: Samarendra N. Maiti, Dai Nguyen, Jehangir Khan, Rong Ling
  • Patent number: 8877743
    Abstract: A compound of formula (I): wherein: M is hydrogen or a pharmaceutically acceptable salt-forming cation; and R1 and M are as defined herein. Also, methods of treating bacterial infection, pharmaceutical compositions, molecular complexes and processes for preparing compounds.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: November 4, 2014
    Assignee: Naeja Pharmaceutical Inc.
    Inventors: Samarendra N. Maiti, Dai Nguyen, Jehangir Khan, Rong Ling
  • Publication number: 20140288051
    Abstract: New bicyclic compounds, their preparation, and their use as antibacterial agents, either alone or in combination with an antibiotic for the treatment of infections caused by ?-lactamase-producing pathogenic bacteria, are described.
    Type: Application
    Filed: June 10, 2014
    Publication date: September 25, 2014
    Inventors: Samarendra N. MAlTI, Dai NGUYEN, Jehangir KHAN, Rong LING
  • Publication number: 20140221341
    Abstract: A compound of formula (I): wherein: M is hydrogen or a pharmaceutically acceptable salt-forming cation; Y is OR1 or NR2R3, and R1, R2, R3 and M are as defined herein. Also, methods of treating bacterial infection, pharmaceutical compositions, molecular complexes and processes for preparing compounds.
    Type: Application
    Filed: April 15, 2014
    Publication date: August 7, 2014
    Applicant: NAEJA PHARMACEUTICAL INC.
    Inventors: Samarendra N. MAITI, Dai NGUYEN, Jehangir KHAN, Rong LING
  • Patent number: 8796257
    Abstract: A compound of formula (I): wherein: M is hydrogen or a pharmaceutically acceptable salt-forming cation; Y is OR1 or NR2R3, and R1, R2, R3 and M are as defined herein. Also, methods of treating bacterial infection, pharmaceutical compositions, molecular complexes and processes for preparing compounds.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: August 5, 2014
    Assignee: Naeja Pharmaceutical Inc.
    Inventors: Samarendra N. Maiti, Dai Nguyen, Jehangir Khan, Rong Ling
  • Patent number: RE48097
    Abstract: Cephem compounds, pharmaceutically acceptable salts thereof, and methods of using same, wherein the compound has a bicyclic nitrogen-containing aromatic heterocyclic ring as the quaternary ammoniomethyl group at the 3-position and one or both of a terminal amidine residue (substituted or unsubstituted) attached to an aryl or a 5- or 6-membered heteroaryl group (substituted or unsubstituted) which is further attached through a spacer to the free N-atom of the quaternary nitrogen-containing bicyclic ring at the 3-side chain, or a terminal guanidine residue attached to an aryl or a 5- or 6-membered heteroaryl group (substituted or unsubstituted) which is further attached through a spacer to the free N-atom of the quaternary nitrogen-containing bicyclic ring at the 3-side chain.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: July 14, 2020
    Assignee: NAEJA-RGM PHARMACEUTICALS ULC
    Inventors: Samarendra Nath Maiti, Dai Quoc Nguyen, Andhe V. N. Reddy, Judy Yip, Chan Minh Ha, Rong Ling, Rudong Shan, Madhava Reddy Madala