Patents by Inventor Dengfeng Dou

Dengfeng Dou 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: 11149008
    Abstract: The present invention discloses a compound shown in formula I or a stereoisomer, pharmaceutically acceptable salt, crystal form, solvate or isotopologue thereof. The compound of the present invention shows excellent inhibition activity against histone deacetylases, has remarkable inhibition effects on cancer cells, and provides a new choice of drugs used for the clinic treatment and diseases related to the abnormal activity of histone deacetylases.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: October 19, 2021
    Inventors: Jin Li, Xueming Li, Dengfeng Dou, Jinqiao Wan, Wei Zhang, Jingming Li, Yan Lan, Linli Li
  • Patent number: 10801022
    Abstract: The present invention provides a method of solid-phase synthesis of DNA-encoded compound library. The method includes following steps: a) reacting solid carrier G-1 with linker molecule L-1 to prepare L-G-1; b) reacting DNA with linker molecule L-0 to prepare L-2; c) reacting L-G-1 with L-2 to prepare L-G-2; d) removing protection group of the L-G-2 and obtaining L-G-2-1; e) reacting the L-G-2-1 with synthetic building block and performing DNA encoding; and f) removing the solid carrier and obtaining the DNA-encoded compound library. Compared with the prior art, the present invention can complete post-treatment purification of the reaction only by filtration and irrigation processes for several times. The present invention is simple to operate, can shorten the production cycle of DNA encoded compound library with more than 50%, significantly increases the production efficiency and the unicity as well as the purity of the final products.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: October 13, 2020
    Assignee: Hitgen INC.
    Inventors: Jin Li, Jinqiao Wan, Guansai Liu, Dengfeng Dou
  • Publication number: 20200149034
    Abstract: Methods of producing compounds and combinatorial compound libraries, the compounds and libraries produced via the methods are provided, and methods of using the libraries to identify compounds having a desired property, such as a desired biological activity and the compounds identified using these methods are provided.
    Type: Application
    Filed: March 16, 2018
    Publication date: May 14, 2020
    Inventors: Jin Li, Barry A. Morgan, Jinqiao Wan, Dengfeng Dou, Guansai Liu, Yong Chang, Qiuxia Chen, Xing Wang, Yanshan Xu, Dongyan Hu, Jian Liu, Xuemin Cheng
  • Patent number: 10266489
    Abstract: The present invention discloses a pyrrolic amide compound shown as a formula I, or crystal forms thereof, and pharmaceutically acceptable salts, hydrates or solvates, wherein R1 is selected from hydrogen, hydroxyl, cyano, halogen, carboxyl, C1-C6 alkyl and the like; R2 is selected from hydrogen, hydroxyl, cyano, halogen and the like; R3 is selected from hydroxyl and the like; X is selected from group, m is equal to 0, 1, 2 or 3, and n is equal to 0, 1 or 2. The novel compound shown as the formular I provided by the present invention has high deacetylase inhibitory viability; and meanwhile, a method for preparing the novel compound in the present invention has the advantages of fewer steps, simple and convenient operation, safety, environment friendliness, high yield and the like and is very suitable for industrial application.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: April 23, 2019
    Assignee: HitGen LTD
    Inventors: Jin Li, Dengfeng Dou, Jinqiao Wan, Fei Pan, Peng Lv
  • Publication number: 20190031612
    Abstract: The present invention discloses a compound shown in formula I or a stereoisomer, pharmaceutically acceptable salt, crystal form, solvate or isotopologue thereof. The compound of the present invention shows excellent inhibition activity against histone deacetylases, has remarkable inhibition effects on cancer cells, and provides a new choice of drugs used for the clinic treatment and diseases related to the abnormal activity of histone deacetylases.
    Type: Application
    Filed: December 29, 2016
    Publication date: January 31, 2019
    Inventors: Jin Li, Xueming Li, Dengfeng Dou, Jinqiao Wan, Wei Zhang, Jingming Li, Yan Lan, Linli Li
  • Publication number: 20180155710
    Abstract: The present invention provides a method of solid-phase synthesis of DNA-encoded compound library. The method includes following steps: a) reacting solid carrier G-1 with linker molecule L-1 to prepare L-G-1; b) reacting DNA with linker molecule L-0 to prepare L-2; c) reacting L-G-1 with L-2 to prepare L-G-2; d) removing protection group of the L-G-2 and obtaining L-G-2-1; e) reacting the L-G-2-1 with synthetic building block and performing DNA encoding; and f) removing the solid carrier and obtaining the DNA-encoded compound library. Compared with the prior art, the present invention can complete post-treatment purification of the reaction only by filtration and irrigation processes for several times. The present invention is simple to operate, can shorten the production cycle of DNA encoded compound library with more than 50%, significantly increases the production efficiency and the unicity as well as the purity of the final products.
    Type: Application
    Filed: October 13, 2017
    Publication date: June 7, 2018
    Inventors: Jin LI, Jinqiao WAN, Guansai LIU, Dengfeng DOU
  • Publication number: 20170298016
    Abstract: The present invention discloses a pyrrolic amide compound shown as a formula I, or crystal forms thereof, and pharmaceutically acceptable salts, hydrates or solvates, wherein R1 is selected from hydrogen, hydroxyl, cyano, halogen, carboxyl, C1-C6 alkyl and the like; R2 is selected from hydrogen, hydroxyl, cyano, halogen and the like; R3 is selected from hydroxyl and the like; X is selected from group, m is equal to 0, 1, 2 or 3, and n is equal to 0, 1 or 2. The novel compound shown as the formular I provided by the present invention has high deacetylase inhibitory viability; and meanwhile, a method for preparing the novel compound in the present invention has the advantages of fewer steps, simple and convenient operation, safety, environment friendliness, high yield and the like and is very suitable for industrial application.
    Type: Application
    Filed: June 27, 2017
    Publication date: October 19, 2017
    Inventors: Jin LI, Dengfeng DOU, Jinqiao WAN, Fei PAN, Peng LV
  • Patent number: 9518998
    Abstract: The present invention discloses a method for capturing drug targets, comprising the following steps of: (1) preparing row materials, i.e.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: December 13, 2016
    Assignee: HitGen LTD.
    Inventors: Jin Li, Benyanzi Yang, Dengfeng Dou, Xiaohu Ge, Hongmei Song, Jinqiao Wan, Yan Zhang, Xiao Hu, Xing Wang, Jingchao Feng, Guoqing Zhong
  • Publication number: 20160154013
    Abstract: The present invention discloses a method for capturing drug targets, comprising the following steps of: (1) preparing row materials, i.e.
    Type: Application
    Filed: November 19, 2015
    Publication date: June 2, 2016
    Inventors: Jin Li, Benyanzi Yang, Dengfeng Dou, Xiaohu Ge, Hongmei Song, Jinqiao Wan, Yan Zhang, Xiao Hu, Xing Wang, Jingchao Feng, Guoqing Zhong
  • Publication number: 20160152976
    Abstract: The present invention provides a compound drug-delivery precursor for membrane permeation, and a drug carrier preparation based on this precursor. The compound drug-delivery precursor and the drug carrier preparation of the present invention may effectively improve the membrane permeability of compounds with low membrane permeability and provide a new choice for clinical medication.
    Type: Application
    Filed: November 20, 2015
    Publication date: June 2, 2016
    Inventors: Jin Li, Benyanzi Yang, Dengfeng Dou, Xiaohu Ge, Hongmei Song, Jinqiao Wan, Yan Zhang, Xiao Hu, Xing Wang, Jingchao Feng, Guoqing Zhong
  • Publication number: 20160153002
    Abstract: The present invention discloses a cell-penetrating method for compounds, comprising the following steps of: (1) preparing raw materials, i.e., the compounds and DNA or RNA; (2) linking: linking the compounds to the DNA or RNA to obtain a molecular conjugate; and (3) transferring: transferring the molecular conjugate obtained in the step (2) into cells by a gene transfer method. The present invention further discloses a structure of a molecular conjugate for transmembrane transfer and a method for synthesizing the molecular conjugate. The method of the present invention effectively solves a problem of low membrane permeability of compounds, so that the compounds enter the cell to act on targets thereof, thus to provide a novel drug-delivery way. The method of the present invention may be used for clinical treatment by drugs with low membrane permeability.
    Type: Application
    Filed: November 20, 2015
    Publication date: June 2, 2016
    Inventors: Jin Li, Benyanzi Yang, Dengfeng Dou, Xiaohu Ge, Hongmei Song, Jinqiao Wan, Yan Zhang, Xiao Hu, Xing Wang, Jingchao Feng, Guoqing Zhong