Patents by Inventor Sammer Yousuf

Sammer Yousuf 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: 11939352
    Abstract: Biotransformation of an aromatase inhibitor, testolactone (1), yielded four metabolites, 7?-hydroxy-3-oxo-13,17-seco-5?-androsta-1-eno-17,13?-lactone (2), 3?,11?-dihydroxy-13,17-seco-5?-androsta-17,13?-lactone (3), 4?,5?-epoxy-3?-hydroxy-13,17-secoandrosta-1-eno-17,13?-lactone (4), and 4?,5?-epoxy-3?-hydroxy-13,17-secoandrosta-1-eno-17,13?-lactone (5). Aromatase (estrogen synthase) involves in the synthesis of estrogen, and promotes the growth of breast cancerous cells. It is a key target for the discovery of chemotherapeutic agents against ER+(estrogen-positive) breast-cancers. Metabolites 2 (IC50=8.63±0.402 nM), and 3 (IC50=9.23±1.31 nM) were identified as potent inhibitors against human aromatase enzyme, in comparison to 1 (IC50=0.716±0.031 ?M), and the standard aromatase inhibiting drug, exemestane (IC50=0.232±0.031 ?M). Derivatives 4 (IC50=10.37±0.50 ?M) and 5 (IC50=0.82±0.059 ?M) also showed a good inhibition against aromatase enzyme.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: March 26, 2024
    Inventors: Muhammad Iqbal Choudhary, Atia-tul Wahab, Mahwish Siddiqui, Nimra Naveed Shaikh, Sammer Yousuf, Atta-ur Rahman
  • Publication number: 20220145335
    Abstract: Biotransformation of medroxyprogesterone acetate (MPA) (1) with Cunninghamella blakesleeana (ATCC 8688) yielded five new analogues, i.e. 17?-acetoxy-6?-methylpregn-4-ene-3,11,20-trione (2), 17?-acetoxy-15?-hydroxy-6?-methylpregn-4-ene-3,11,20-trione (3), 17?-acetoxy-6?-hydroxy-6?-methylpregn-4-ene-3,11,20-trione (4), 17?-acetoxy-11?,15?-dihydroxy-6?-methylpregn-4-ene-3,20-dione (5), and 17?-acetoxy-6?,11?-dihydroxy-6?-methylpregn-4-ene-3,20-dione (6). In T-cell proliferation assay, metabolites 2, and 5 were found to be potent inhibitors with IC50<0.5 ?M, metabolite 6 showed a significant activity with IC50=8.64±0.02 ?M, while metabolites 3 and 4 were found to be moderately active with IC50=41.59±8.14, and 40.14±0.12 ?M, as compared to substrate 1 (IC50=6.48±5.18 ?M) and standard prednisolone (IC50=9.75±0.03 ?M) in in vitro assay. To establish the binding mode of medroxyprogesterone acetate (MPA) and the bio-transformed derivatives, molecular docking simulations were carried out using Vina.
    Type: Application
    Filed: January 27, 2022
    Publication date: May 12, 2022
    Inventors: Muhammad Iqbal Choudhary, Saira Bano, Atia-tul Wahab, Zaheer Ul-Haq, Sammer Yousuf, Almas Jabeen, Atta-ur Rahman
  • Publication number: 20210230214
    Abstract: Biotransformation of an aromatase inhibitor, testolactone (1), yielded five new metabolites, 7?-hydroxy-3-oxo-13,17-secoandrosta-1,4-dieno-17,13?-lactone (2), 7?-hydroxy-3-oxo-13,17-seco-5?-androsta-1-eno-17,13?-lactone (3), 3?,11?-dihydroxy-13,17-seco-5?-androsta-17,13?-lactone (4), 4?,5?-epoxy-3?-hydroxy-13,17-secoandrosta-1-eno-17,13?-lactone (5), and 4?,5?-epoxy-3?-hydroxy-13,17-secoandrosta-1-eno-17,13?-lactone (6). Aromatase (estrogen synthase) involves in the synthesis of estrogen, and promotes the growth of breast cancerous cells. It is a key target for the discovery of chemotherapeutic agents against ER+ (estrogen-positive) breast-cancers and several other diseases caused by overexpression of aromatase enzyme. Metabolites 3 (IC50=8.60±0.402 nM), and 4 (IC50=9.23±1.31 nM) were identified as potent inhibitors against human aromatase enzyme, in comparison to 1 (IC50=0.716±0.031 ?M), and the standard aromatase inhibiting drug, exemestane (IC50=0.232±0.031 ?M). Derivatives 2 (IC50=11.68±0.
    Type: Application
    Filed: February 17, 2021
    Publication date: July 29, 2021
    Inventors: Muhammad Iqbal Choudhary, Atia-tul- Wahab, Mahwish Siddiqui, Nimra Naveed Shaikh, Sammer Yousuf, Atta-ur- Rahman
  • Patent number: 10765716
    Abstract: A method for treating the onset of obesity, reducing dyslipidemia and improving insulin sensitivity in mammals comprising administering a therapeutically effective amount of dried alcoholic extract of Cordia latifolia orally at a dose of 300 mg/kg of body weight to mammals in need for the reducing body weight and managing diabetic conditions.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: September 8, 2020
    Inventors: Muhammad Iqbal Choudhary, Sammer Yousuf, Misha Siddiqui, Madiha Mukhtar
  • Patent number: 10426806
    Abstract: The present invention relates to reducing insulin resistance by administering an oral dose of an ethanolic extracts of Borago officinalis Linn., wherein the treatment further reduces dyslipidemia, hypertension, cardiovascular diseases, and resistance to insulin.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: October 1, 2019
    Inventors: Muhammad Iqbal Choudhary, Sammer Yousuf, Misha Siddiqui, Madiha Mukhtar
  • Publication number: 20190046597
    Abstract: A method for treating the onset of obesity, reducing dyslipidemia and improving insulin sensitivity in mammals comprising administering a therapeutically effective amount of dried alcoholic extract of Cordia latifolia orally at a dose of 300 mg/kg of body weight to mammals in need for the reducing body weight and managing diabetic conditions.
    Type: Application
    Filed: August 8, 2017
    Publication date: February 14, 2019
    Inventors: Muhammad Iqbal Choudhary, Sammer Yousuf, Misha Siddiqui, Madiha Mukhtar
  • Patent number: 9802894
    Abstract: Novel ?-Glucosidase inhibitors include propanone substituted indole ring-containing heterocyclic compounds, which are represented by Formula I: Wherein R1 is thiophene, 2,4-di chloro phenyl, 2,6-di chloro phenyl, bromo phenyl, benzyl or nitrophenyl; and R2 is an aryl group, or stereoisomers or pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: October 31, 2017
    Assignee: KING SAUD UNIVERSITY
    Inventors: Abdullah Mohammed Al-Majid, Mohammad Shahidul Islam, Assem Barakat, Muhammad Iqbal Choudhary, Sammer Yousuf
  • Publication number: 20170088516
    Abstract: Novel ?-Glucosidase inhibitors include propanone substituted indole ring-containing heterocyclic compounds, which are represented by Formula I: Wherein R1 is thiophene, 2,4-di chloro phenyl, 2,6-di chloro phenyl, bromo phenyl, benzyl or nitrophenyl; and R2 is an aryl group, or stereoisomers or pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: September 29, 2015
    Publication date: March 30, 2017
    Inventors: ABDULLAH MOHAMMED AL-MAJID, MOHAMMAD SHAHIDUL ISLAM, ASSEM BARAKAT, MUHAMMAD IQBAL CHOUDHARY, SAMMER YOUSUF
  • Patent number: 9527820
    Abstract: The diethylammonium salts of phenyl-substituted thiobarbituric acid as anti-diabetic agents include compounds having the formula: wherein X is: and wherein R1 is selected from the group consisting of a hydrogen, halogen, methyl, trifluoromethyl, methoxy, and nitro, and R2 is either halogen or hydrogen, the R1 and R2 substituents being independently bonded to an ortho-, meta-, or para-carbon of the phenyl substituent.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: December 27, 2016
    Assignee: KING SAUD UNIVERSITY
    Inventors: Assem Barakat, Mohamed Ali, Abdullah Mohammed Al Majid, Sammer Yousuf, Muhammad Iqbal Choudhary
  • Publication number: 20160220626
    Abstract: The present invention relates to the effects of Physalis minima L. methanolic extract on dyslipidemia and insulin resistance in insulin resistant high-fat diet-induced obese rats without any systemic toxicities. The extract reversed the dyslipidemia and insulin resistance in high-fat diet-induced obese rats.
    Type: Application
    Filed: January 29, 2015
    Publication date: August 4, 2016
    Inventors: Sammer Yousuf, Rehana Noshin, Mohammad Iqbal Choudhary
  • Publication number: 20140256754
    Abstract: Quinazoline derivatives 1-25, (2-[3,4-bis(methyloxy)phenyl]quinazolin-4-(3H)-one) and 2-[2-(ethyloxy)phenyl]quinazoline-4-(3H)-one) are reported as ?-glucuronidase inhibitors useful in the treatment of ?-glucuronidase hyperactivity disorders.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 11, 2014
    Inventors: Muhammad Iqbal Choudhary, Kahalid Mohammed KHAN, Nimra Naveed SHAIKH, Syed Muhammad SAAD, Sammer YOUSUF, Atta-ur Rahman
  • Patent number: 8287921
    Abstract: Treatment of leishmaniasis in animals and humans using the methanolic extract of Physalis minima in petrolatum is described.
    Type: Grant
    Filed: July 24, 2011
    Date of Patent: October 16, 2012
    Inventors: Attaur Rahman, Mohammad Iqbal Choudhary, Sammer Yousuf, Samreen Khan, Farooq Rahman Soomro, Shahida Perveen