Patents by Inventor Mohammad Jamshed Ahmed Siddiqui

Mohammad Jamshed Ahmed Siddiqui 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).

  • Betulinic acid derivatives
    Patent number: 8022055
    Abstract: The invention relates to novel betulinic acid derivatives of formula (I), wherein R is C(?CH2)CH3 or CH(CH3)2; R2 together with the adjacent carbonyl group forms a carboxylic acid, carboxylic acid ester or amide or substituted amide; R3 or R4 are hydrogen or aryl with the proviso that both are not independently hydrogen or alkyl or R3 and R4 are combined together to form an aryl ring optionally substituted with a group X, wherein X is selected from halogen, alkyl, cyano, nitro, alkoxy, amino or substituted amine; Y is N or O; and R1 is zero when Y is O, and R1 is hydrogen, alkyl or aryl alkyl when Y is N, useful for inhibition of tumor cancer cells.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: September 20, 2011
    Assignee: Dabur Pharma Limited
    Inventors: Rama Mukherjee, Sanjay Kumar Srivastava, Mohammad Jamshed Ahmed Siddiqui, Manu Jaggi, Anu T. Singh, Anand Vardhan, Manoj Kumar Singh, Praveen Rajendran, Hemant Kumar Jajoo, Anand C. Burman, Vivek Kumar, Nidhi Rani, Shiv Kumar Agarwal
  • Extracting betulinic acid from Ziziphus jujuba
    Patent number: 6264998
    Abstract: A process for isolating betulinic acid from Ziziphus jujuba is disclosed.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: July 24, 2001
    Assignee: Dabur Research Foundation
    Inventors: Sunder Ramadoss, Mohammad Jamshed Ahmed Siddiqui
  • Use of betulinic acid derivatives for inhibiting cancer growth
    Patent number: 6214814
    Abstract: The invention relates to the use of betulinic acid and its derivatives for the inhibition and/or prevention or cancer growth. The invention also relates to novel betulinic acid derivatives useful for the inhibition of tumor/cancer cells and a process for the preparation of the derivatives. The invention also relates to the antileukemic, and anti-lymphoma activity of the betulinic acid derivatives, and the use of the derivatives for the treatment of prostate, ovarian and lung cancer.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: April 10, 2001
    Assignee: Dabur Research Foundation
    Inventors: Sunder Ramadoss, Manu Jaggi, Mohammad Jamshed Ahmed Siddiqui, Achla B. Khanna