Patents by Inventor Aifeng Lv

Aifeng Lv 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: 10208065
    Abstract: Crystalline free bases and crystalline acid salts of 9-((8-fluoro-6-(1-methyl-1H-pyrazol-4-yl)-[1,2,4]triazolo[4,3-a]pyridine-3-yl)thio)-4-methyl-2H-[1,4]oxaazido[3,2-c]quinoline-3(4H)-one are disclosed as C-Met inhibitors. Their preparation methods and uses are also described. In particular, crystal forms I, II, III and IV of the free base; crystal form I of the hydrochloride salt; crystal forms I and II of the sulfate salt; crystal forms I, II, III and IV of the phosphate salt; crystal forms I, II, III, IV and V of the mesylate salt; crystal forms I, II and III of the p-toluenesulfonate salt; and crystal forms I, II and III of the 1,5-naphthalenedisulfonate salt are disclosed. Also disclosed are methods for preparing the above-mentioned crystal forms, pharmaceutical compositions thereof, methods for regulating the catalytic activity of a protein kinase, and methods of treating protein kinase-related diseases.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: February 19, 2019
    Assignee: JIANGSU HANSOH PHARMACEUTICAL GROUP CO., LTD.
    Inventors: Xiang Li, Aifeng Lv
  • Publication number: 20180148470
    Abstract: The present invention relates to a cholic acid derivative, and a preparation method and a medical use thereof. In particular, the present invention relates to a cholic acid derivative of formula (I), a stereoisomer, or a pharmaceutically acceptable salt thereof. The series of compounds can be used to treat FXR mediated diseases, including cardiovascular disease, atherosclerosis, arteriosclerosis, hypercholesterolemia, hyperlipidemia and chronic hepatitis diseases, chronic liver diseases, gastrointestinal diseases, nephrosis, heart vascular diseases, metabolic diseases, cancer (for example colorectal cancer) or neurological diseases, such as strokes and other diseases, with a wide range of medical applications, and are expected to develop into a new generation of FXR agonists.
    Type: Application
    Filed: April 13, 2016
    Publication date: May 31, 2018
    Inventors: Chenghai LI, Rudi BAO, Aifeng LV, Huijuan ZHONG
  • Patent number: 8716221
    Abstract: The present invention discloses a modified exendin or pharmaceutically acceptable salts thereof, wherein the modified exendin comprises an amino acid sequence having at least 90% sequence identity to SEQ ID No. 17 and the amino acid sequence has a higher stability than the non-modified exendin of SEQ ID No. 4. These compounds are useful in treating type 2 diabetes as GLP-1 receptor agonists.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: May 6, 2014
    Assignee: Wuxi Grandchamp Pharmaceutical Technology Co., Ltd.
    Inventors: Aifeng Lv, Changan Sun, Yali Wang
  • Publication number: 20120238606
    Abstract: Azilsartan amine salts, their preparation and method of use are disclosed. Specifically, azilsartan amine salts represented by formula (I), their preparation, pharmaceutical compositions containing a therapeutically effective amount of the compounds and their use for treating hypertension are disclosed.
    Type: Application
    Filed: November 29, 2010
    Publication date: September 20, 2012
    Applicant: JIANGSU HANS PHARMACEUTIAL GROUP CO., LTD.
    Inventors: Aifeng Lv, Baohai Yang
  • Publication number: 20120196802
    Abstract: The present invention discloses a modified exendin or pharmaceutically acceptable salts thereof, wherein the modified exendin comprises an amino acid sequence having at least 90% sequence identity to SEQ ID No. 17 and the amino acid sequence has a higher stability than the non-modified exendin of SEQ ID No. 4. These compounds are useful in treating type 2 diabetes as GLP-1 receptor agonists.
    Type: Application
    Filed: December 22, 2011
    Publication date: August 2, 2012
    Applicant: WUXI GRANDCHAMP PHARMACEUTICAL TECHNOLOGY CO., LTD.
    Inventors: Aifeng LV, Changan Sun, Yali Wang
  • Patent number: 8183242
    Abstract: The present invention provides aminopyrimidine compounds of formula (I) and their salts, wherein R1, R2, R3, R4, R5, R6, Q, Z, L, m, n are defined as the description, the methods for preparation thereof, the uses thereof and the pharmaceutical compositions comprising the effective amount of compounds of formula (I). The compounds of formula (I) and their salts can be used as protein kinase inhibitors.
    Type: Grant
    Filed: December 26, 2005
    Date of Patent: May 22, 2012
    Inventors: Piaoyang Sun, Aifeng Lv, Baohai Yang, Chunyong Hu
  • Patent number: 8097586
    Abstract: Novel exendins with modifications at one or more of following positions: 2, 14, 27 or 28 and polyethylene glycol derivatives thereof are provided. These compounds are useful in treating type 2 diabetes as GLP-1 receptor agonists.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: January 17, 2012
    Assignee: Wuxi Grandchamp Pharmaceutical Technology Co., Ltd.
    Inventors: Aifeng Lv, Changan Sun, Yali Wang
  • Publication number: 20100009904
    Abstract: Novel exendins with modifications at one or more of following positions: 2, 14, 27 or 28 and polyethylene glycol derivatives thereof are provided. These compounds are useful in treating type 2 diabetes as GLP-1 receptor agonists.
    Type: Application
    Filed: January 10, 2006
    Publication date: January 14, 2010
    Applicant: Wuxi Grandchamp Pharmaceutical Technology Co., Ltd
    Inventors: Aifeng Lv, Changan Sun, Yali Wang
  • Publication number: 20080312251
    Abstract: The present invention provides aminopyrimidine compounds of formula (I) and their salts, wherein R1, R2, R3, R4, R5, R6, Q, Z, L, m, n are defined as the description, the methods for preparation thereof, the uses thereof and the pharmaceutical compositions comprising the effective amount of compounds of formula (I). The compounds of formula (I) and their salts can be used as protein kinase inhibitors.
    Type: Application
    Filed: December 26, 2005
    Publication date: December 18, 2008
    Inventors: Piaoyang Sun, Aifeng Lv, Baohai Yang, Chunyong Hu, Weibo Wang
  • Publication number: 20080070942
    Abstract: The present invention relates to derivatives of compounds (formula (I) or (II)) and their salts, wherein R1 represents lower alkyl or the lower alkyl substituted by halogen atoms, R2 represents straight-chain or branched-chain alkyl containing 1-4 carbon atoms and R3 represents hydrogen atom or alkali metals such as lithium, sodium, potassium or alkaline-earth metals such as magnesium and calcium. In the present invention, compounds with formula (I) or (II) and their derivatives or salts thereof acceptable in pharmacy and pharmacology can remarkably improve the effectiveness of anti-ulcer in alimentary tract, weakly inhibit gastric acid secretion, reduce the risk of stomach cancer and have excellent bio-availability and other in-vive pharmacokinetic characteristics.
    Type: Application
    Filed: September 23, 2005
    Publication date: March 20, 2008
    Applicant: JIANGSU HANSEN PHARMACEUTICAL CO., LTD.
    Inventors: Huijuan ZHONG, Aifeng LV