Patents by Inventor Zhenggang Liu

Zhenggang Liu 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: 11738000
    Abstract: Disclosed are hydroquinone compounds, preparation methods therefor, and uses thereof in anti-tumor or immunomodulation. The structural formula of the hydroquinone compounds are shown by formula I, wherein X is C?O or CH2; Y is NH, O or absent; R is: a substituted or unsubstituted alkyl group having at least one carbon atom, a substituted or unsubstituted cycloalkyl group having at least three carbon atoms, a substituted or unsubstituted alkenyl group or alkynyl group having at least two carbon atoms; and a substituted or unsubstituted aryl group or heteroaryl group containing at least four carbon atoms. The compounds provided slowly release 2-tert-butyl-4-methoxyphenol in vivo and maintain stable plasma concentration of 2-tert-butyl-4-methoxyphenol (T1/2=12-24 h). The compounds provided by the present invention protect the phenolic hydroxyl group of 2-tert-butyl-4-methoxyphenol, avoids environmental oxidation and increase the environmental stability of drugs containing the compounds.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: August 29, 2023
    Assignees: BIOMEDICAL ANALYSIS CENTER, ACADEMY OF MILITARY MEDICAL SCIENCES, INSTITUTE OF PHARMACOLOGY AND TOXICOLOGY, ACADEMY OF MILITARY MEDICAL SCIENCES
    Inventors: Xuemin Zhang, Xinhua He, Tao Zhou, Zhenggang Liu, Tao Li
  • Patent number: 11655201
    Abstract: The present invention relates to a stable crystal form, i.e. form A, of 2-tert-butyl-4-methoxyphenol, and to a new preparation method for the 2-tert-butyl-4-methoxyphenol; and the use of the 2-tert-butyl-4-methoxyphenol and the stable crystal form thereof, i.e. form A, in preparing antitumor drugs or immunomodulator drugs. The stable crystal form, i.e. form A, as expressed by a powder X-ray diffraction pattern in an angle of 2?, using Cu-K? radiation, has at least 3 absorption peaks selected from the following positions: 6.27±0.10, 6.94±0.10, 12.27±0.10, 13.36±0.10, 14.01±0.10, 14.79±0.10, 15.31±0.10, 17.05±0.10, 18.30±0.10, 19.00±0.10, 20.47±0.10, 20.98±0.10, 22.37±0.10, 23.68±0.10, 24.55±0.10, 25.37±0.10, 30.83±0.10, 33.12±0.10, 40.50±0.10, 42.81±0.10.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: May 23, 2023
    Assignee: BIOMEDICAL ANALYSIS CENTER, ACADEMY OF MILITARY MEDICAL SCIENCES
    Inventors: Xuemin Zhang, Xinhua He, Tao Zhou, Zhenggang Liu, Tao Li, Shengming Wu
  • Publication number: 20210317059
    Abstract: The present invention relates to a stable crystal form, i.e. form A, of 2-tert-butyl-4-methoxyphenol, and to a new preparation method for the 2-tert-butyl-4-methoxyphenol; and the use of the 2-tert-butyl-4-methoxyphenol and the stable crystal form thereof, i.e. form A, in preparing antitumor drugs or immunomodulator drugs. The stable crystal form, i.e. form A, as expressed by a powder X-ray diffraction pattern in an angle of 2?, using Cu-K? radiation, has at least 3 absorption peaks selected from the following positions: 6.27±0.10, 6.94±0.10, 12.27±0.10, 13.36±0.10, 14.01±0.10, 14.79±0.10, 15.31±0.10, 17.05±0.10, 18.30±0.10, 19.00±0.10, 20.47±0.10, 20.98±0.10, 22.37±0.10, 23.68±0.10, 24.55±0.10, 25.37±0.10, 30.83±0.10, 33.12±0.10, 40.50±0.10, 42.81±0.10.
    Type: Application
    Filed: March 23, 2018
    Publication date: October 14, 2021
    Inventors: Xuemin ZHANG, Xinhua HE, Tao ZHOU, Zhenggang LIU, Tao LI, Shengming WU
  • Publication number: 20210008022
    Abstract: Disclosed are hydroquinone compounds, preparation methods therefor, and uses thereof in anti-tumor or immunomodulation. The structural formula of the hydroquinone compounds are shown by formula I, wherein X is C?O or CH2; Y is NH, O or absent; R is: a substituted or unsubstituted alkyl group having at least one carbon atom, a substituted or unsubstituted cycloalkyl group having at least three carbon atoms, a substituted or unsubstituted alkenyl group or alkynyl group having at least two carbon atoms; and a substituted or unsubstituted aryl group or heteroaryl group containing at least four carbon atoms. The compounds provided slowly release 2-tert-butyl-4-methoxyphenol in vivo and maintain stable plasma concentration of 2-tert-butyl-4-methoxyphenol (T1/2=12-24 h). The compounds provided by the present invention protect the phenolic hydroxyl group of 2-tert-butyl-4-methoxyphenol, avoids environmental oxidation and increase the environmental stability of drugs containing the compounds.
    Type: Application
    Filed: August 7, 2020
    Publication date: January 14, 2021
    Inventors: Xuemin ZHANG, Xinhua HE, Tao ZHOU, Zhenggang LIU, Tao LI
  • Patent number: 10786481
    Abstract: Disclosed are hydroquinone compounds, preparation methods therefor, and uses thereof in anti-tumor or immunomodulation. The structural formula of the hydroquinone compounds are shown by formula I, wherein X is C?O or CH2; Y is NH, O or absent; R is a substituted or unsubstituted alkyl group having at least one carbon atom, a substituted or unsubstituted cycloalkyl group having at least three carbon atoms, a substituted or unsubstituted alkenyl group or alkynyl group having at least two carbon atoms; and a substituted or unsubstituted aryl group or heteroaryl group containing at least four carbon atoms. The compounds provided slowly release 2-tert-butyl-4-methoxyphenol in vivo and maintain stable plasma concentration of 2-tert-butyl-4-methoxyphenol (T½=12˜24 h). The compounds provided by the present invention protect the phenolic hydroxyl group of 2-tert-butyl-4-methoxyphenol, avoid environmental oxidation and increase the environmental stability of drugs containing the compounds.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: September 29, 2020
    Assignees: BIOMEDICAL ANAYLSIS CENTER, ACADEMY OF MILITARY MEDICAL SCIENCES, INSTITUTE OF PHARMACOLOGY AND TOXICOLOGY, ACADEMY OF MILITARY MEDICAL SCIENCES
    Inventors: Xuemin Zhang, Xinhua He, Tao Zhou, Zhenggang Liu, Tao Li
  • Publication number: 20190022049
    Abstract: Disclosed are hydroquinone compounds, preparation methods therefor, and uses thereof in anti-tumor or immunomodulation. The structural formula of the hydroquinone compounds are shown by formula I, wherein X is C?O or CH2; Y is NH, O or absent; R is a substituted or unsubstituted alkyl group having at least one carbon atom, a substituted or unsubstituted cycloalkyl group having at least three carbon atoms, a substituted or unsubstituted alkenyl group or alkynyl group having at least two carbon atoms; and a substituted or unsubstituted aryl group or heteroaryl group containing at least four carbon atoms. The compounds provided slowly release 2-tert-butyl-4-methoxyphenol in vivo and maintain stable plasma concentration of 2-tert-butyl-4-methoxyphenol (T½=12˜24 h). The compounds provided by the present invention protect the phenolic hydroxyl group of 2-tert-butyl-4-methoxyphenol, avoid environmental oxidation and increase the environmental stability of drugs containing the compounds.
    Type: Application
    Filed: February 22, 2017
    Publication date: January 24, 2019
    Inventors: Xuemin ZHANG, Xinhua HE, Tao ZHOU, Zhenggang LIU, Tao LI
  • Publication number: 20180348219
    Abstract: The invention features diagnostic and therapeutic methods and compositions featuring Anti-TNF Induced Apoptosis (ATIA). AITA is useful as a diagnostic marker for cancer, in particular for glioblastoma. ATIA is also a therapeutic target in diseases such as cancer. The invention encompasses combination therapies where knockdown of ATIA is used in combination with other treatment. The invention also features kits for use in the diagnostic and therapeutic methods.
    Type: Application
    Filed: June 4, 2018
    Publication date: December 6, 2018
    Inventor: Zhenggang Liu
  • Patent number: 9989533
    Abstract: The invention features diagnostic and therapeutic methods and compositions featuring Anti-TNF Induced Apoptosis (ATIA). ATIA is useful as a diagnostic marker for cancer, in particular for glioblastoma. ATIA is also a therapeutic target in diseases such as cancer. The invention encompasses combination therapies where knockdown of ATIA is used in combination with other treatment. The invention also features kits for use in the diagnostic and therapeutic methods.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: June 5, 2018
    Assignee: The United States of America, as represented by the Secretary, Department of Health & Human Services
    Inventor: Zhenggang Liu
  • Publication number: 20120082660
    Abstract: The invention features diagnostic and therapeutic methods and compositions featuring Anti-TNF Induced Apoptosis (ATIA). ATIA is useful as a diagnostic marker for cancer, in particular for glioblastoma. ATIA is also a therapeutic target in diseases such as cancer. The invention encompasses combination therapies where knockdown of ATIA is used in combination with other treatment. The invention also features kits for use in the diagnostic and therapeutic methods.
    Type: Application
    Filed: May 27, 2010
    Publication date: April 5, 2012
    Applicant: Govt. of the United States of America Dept. of Health & Human Services
    Inventor: Zhenggang Liu