Patents by Inventor Zhizhong Ma

Zhizhong Ma 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: 20220267263
    Abstract: Carbamate-substituted styryl sulfone compounds have a structure of general formula (I). The compounds not only has a significantly enhanced acetylcholinesterase inhibitory activity compared with carbamates as positive drugs, but also has a significantly enhanced therapeutic effect on Parkinson's disease compared with caffeic acid phenethyl ester compounds having similar structures.
    Type: Application
    Filed: July 18, 2019
    Publication date: August 25, 2022
    Inventors: Xinan LV, Junyi LIU, Shouxin ZHOU, Xiang AO, Zhizhong MA
  • Patent number: 9532967
    Abstract: Disclosed is the use of the compounds represented by formula (I) in the preparation of a medicament against tumor angiogenesis, wherein R1 and R2 are each independently C1-C8 alkylidene group or C2-C8 alkenylidene group; A1 and A2 are each independently aryl, isoaryl, or aryl or isoaryl optionally substituted by halogen, —CN, —NO2, —OH, —SH, —OR3, —SR3, —R3, —R3—OR4, —C(O)R3, —S(O)R3, —S(O)2R3, —NR4R5, —C(O)OR3, —C(O)NR4R5, —O(O)CR4, —S(O)CR4 or —NR4(O)CR5, wherein R3 is C1-C4 alkyl, R4 and R5 are each independently hydrogen, C1-C4 alkyl, aryl or substituted aryl; and X and Y are each independently oxygen; and the compound of formula (I) does not include phenethyl caffeate.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: January 3, 2017
    Inventors: Junyi Liu, Yansheng Du, Jirun Peng, Zhizhong Ma
  • Patent number: 9109003
    Abstract: The present invention provides an extraction method for the leaves of Ilex kudingcha C. J. Tseng, and the total saponins from I. kudingcha leaves extracted by using this method, and use of the total saponins in preparing a drug for reducing cholesterol and blood lipids and anti-atherosclerosis. The extraction method comprises the following steps: subjecting I. kudingcha leaves to refluxing extraction with ethanol aqueous solution to obtain an extracted solution; filtering the extracted solution and removing ethanol, and then separating and purifying the solution using a macroporous resin column.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: August 18, 2015
    Assignee: Peking University
    Inventors: Pengfei Tu, Tongmei Zhang, Jiao Zheng, Yong Jiang, Haiyan Zhou, Li Tang, Zhizhong Ma
  • Publication number: 20130303469
    Abstract: The present invention provides an extraction method for the leaves of Ilex kudingcha C. J. Tseng, and the total saponins from I. kudingcha leaves extracted by using this method, and use of the total saponins in preparing a drug for reducing cholesterol and blood lipids and anti-atherosclerosis. The extraction method comprises the following steps: subjecting I. kudingcha leaves to refluxing extraction with ethanol aqueous solution to obtain an extracted solution; filtering the extracted solution and removing ethanol, and then separating and purifying the solution using a macroporous resin column.
    Type: Application
    Filed: December 21, 2011
    Publication date: November 14, 2013
    Inventors: Pengfei Tu, Tongmei Zhang, Jiao Zheng, Yong Jiang, Haiyan Zhou, Li Tang, Zhizhong Ma
  • Publication number: 20130303611
    Abstract: Disclosed is the use of the compounds represented by formula (I) in the preparation of a medicament against tumor angiogenesis, wherein R1 and R2 are each independently C1-C8 alkylidene group or C2-C8 alkenylidene group; A1 and A2 are each independently aryl, isoaryl, or aryl or isoaryl optionally substituted by halogen, —CN, —NO2, —OH, —SH, —OR3, —SR3, —R3, —R3—OR4, —C(O)R3, —S(O)R3, —S(O)2R3, —NR4R5, —C(O)OR3, —C(O)NR4R5, —O(O)CR4, —S(O)CR4 or —NR4(O)CR5, wherein R3 is C1-C4 alkyl, R4 and R5 are each independently hydrogen, C1-C4 alkyl, aryl or substituted aryl; and X and Y are each independently oxygen; and the compound of formula (I) does not include phenethyl caffeate.
    Type: Application
    Filed: December 8, 2011
    Publication date: November 14, 2013
    Inventors: Junyi Liu, Yansheng Du, Jirun Peng, Zhizhong Ma