Patents by Inventor Chengmei ZHANG

Chengmei ZHANG 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).

  • Design, synthesis, and biological evaluation of 1-methyl-1, 4-dihyrdoindeno[1,2-C]pyrazole analogues as potential anticaner agents targeting tubulin colchicine binding site
    Patent number: 10059674
    Abstract: The invention discloses an indenopyrazole small-molecule tubulin inhibitor, which is characterized by having a structure represented by general formula I: wherein R represents NH2 or NHOH; the invention also discloses a preparation method of the indenopyrazole compound, or pharmaceutical salts thereof. The compound of the present invention is an indenopyrazole small-molecule tubulin inhibitor having a novel structure, and has very strong proliferation inhibition activity to human hepatocellular carcinoma (HepG2) cells, human prostate carcinoma (PC3) cells, human cervical carcinoma (HeLa) cells, human breast adenocarcinoma (MCF-7) cells, and human leukemia (K562) cells; the compound is similar to colchicine in mechanism of action, and thus capable of inhibiting tubulin polymerization; the compound is significant for enhancing the specificity and effectiveness of drugs, reducing toxic and side effects, preventing drug tolerance, and so on.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: August 28, 2018
    Assignee: ACT PHARMA CO., LTD.
    Inventors: Zhaopeng Liu, Yanna Liu, Yanqiu Shi, Chengmei Zhang
  • DESIGN, SYNTHESIS, AND BIOLOGICAL EVALUATION OF 1-METHYL-1, 4-DIHYRDOINDENO[1,2-C]PYRAZOLE ANALOGUES AS POTENTIAL ANTICANER AGENTS TARGETING TUBULIN COLCHICINE BINDING SITE
    Publication number: 20170327468
    Abstract: The invention discloses an indenopyrazole small-molecule tubulin inhibitor, which is characterized by having a structure represented by general formula I: wherein R represents NH2 or NHOH; the invention also discloses a preparation method of the indenopyrazole compound, or pharmaceutical salts thereof. The compound of the present invention is an indenopyrazole small-molecule tubulin inhibitor having a novel structure, and has very strong proliferation inhibition activity to human hepatocellular carcinoma (HepG2) cells, human prostate carcinoma (PC3) cells, human cervical carcinoma (HeLa) cells, human breast adenocarcinoma (MCF-7) cells, and human leukemia (K562) cells; the compound is similar to colchicine in mechanism of action, and thus capable of inhibiting tubulin polymerization; the compound is significant for enhancing the specificity and effectiveness of drugs, reducing toxic and side effects, preventing drug tolerance, and so on.
    Type: Application
    Filed: May 12, 2016
    Publication date: November 16, 2017
    Applicant: JOYOCHEM CO., LTD
    Inventors: Zhaopeng LIU, Yanna LIU, Yanqiu SHI, Chengmei ZHANG