Patents by Inventor René Maltais

René Maltais 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: 20230303474
    Abstract: A method for the synthesis of specialized pro-resolving mediators, structural isomers thereof and analogs thereof is disclosed herein. The method comprises reacting a compound of the formula (I): wherein R1 is alkyl(C?12), cycloalkyl(C?12), alkenyl(C?12), alkylidene(C?12), alkynyl(C?12), aryl, aralkyl, heteroaryl or heteroaralkyl; and X1, X2 and X3 are each independently hydroxy or OP, wherein P is a hydroxy protecting or hydroxy activating group; with a reducing agent under conditions sufficient to produce a compound of the formula (II): wherein: R1, X1, X2 and X3 are as defined above. Novel protectins, more specifically novel structural isomers and analogs of PD1 and PDX are also disclosed.
    Type: Application
    Filed: July 29, 2021
    Publication date: September 28, 2023
    Applicant: UNIVERSITÉ LAVAL
    Inventors: André MARETTE, René MALTAIS, Donald POIRIER, Jean-Yves SANCÉAU
  • Patent number: 11174282
    Abstract: Estrane-based and androstane-based aminosteroid derivatives are described herein. More specifically, the following piperazinyl-steroid compounds of Formula I, Formula II, Formula III, and Formula IV are described. The compounds display cytotoxicity on a variety of cancer cell lines. A process for producing the compounds and their use in the manufacture of pharmaceutical formulations and/or combinations is also disclosed.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: November 16, 2021
    Assignee: UNIVERSITÉ LAVAL
    Inventors: Donald Poirier, René Maltais, Martin Perreault
  • Patent number: 11072632
    Abstract: The present application discloses 17? hydroxy steroid dehydrogenase (17? HSD) type 1, 3, 10 inhibitors and use thereof (alone and in combination) in the treatment of cancer and other afflictions. 17? HSD1 inhibitors include estradiol derivatives with a nieta-carbamoylbenzyl substituent at C 16. 17? HSD3/HSD10 inhibitors include androsterone derivatives substituted at the C3 position with a sulfonamide piperazine. Also disclosed are compounds that are inhibitors of both 17? HSD1 and 17? HSD3 that have a spiro-morpholine substituent at C20.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: July 27, 2021
    Assignee: UNIVERSITÉ LAVAL
    Inventors: Donald Poirier, Jenny Roy, Rene Maltais
  • Publication number: 20200002372
    Abstract: Estrane-based and androstane-based aminosteroid derivatives are described herein. More specifically, the following piperazinyl-steroid compounds of Formula I, Formula II, Formula III, and Formula IV are described. The compounds display cytotoxicity on a variety of cancer cell lines. A process for producing the compounds and their use in the manufacture of pharmaceutical formulations and/or combinations is also disclosed.
    Type: Application
    Filed: June 2, 2017
    Publication date: January 2, 2020
    Inventors: Donald POIRIER, René MALTAIS, Martin PERREAULT
  • Patent number: 9708305
    Abstract: Provided are compounds of general formula A and A?, wherein X1 and X2 are each C, CH or N; R3 and R4 are each H, optionally substituted C1-C30 saturated or unsaturated chemical group, or together form an optionally substituted C5-C8 cycle; Z1; Z2 and Z3 are each N or CH; V is C?O, C?S or CH2; n is from 1 to 12; W1 and W2 are each H, CH2, O or S; and R1 and R2 are each H, Cr1C6 alkyl, C1C6 aryl, C1C12 alkylaryl, optionally substituted phenyl, C1C6 alkoxy, C1C6 thioalkoxy, F, Cl, Br or I. These compounds inhibit steroid sulfatase (STS), act as selective estrogen receptor modulators (SERMs), increase alkaline phosphatase (ALP) activity, and are useful in the treatment of medical conditions involving hormones such as breast cancer, prostate cancer, endometriosis, osteoporosis, benign prostatic hyperplasia and endometrial cancer.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: July 18, 2017
    Assignee: UNIVERSITÉ LAVAL
    Inventors: Donald Poirier, René Maltais
  • Publication number: 20160200685
    Abstract: Provided are compounds of general formula A and A?, wherein X1 and X2 are each C, CH or N; R3 and R4 are each H, optionally substituted C1-C30 saturated or unsaturated chemical group, or together form an optionally substituted C5-C8 cycle; Z1; Z2 and Z3 are each N or CH; V is C?O, C?S or CH2; n is from 1 to 12; W1 and W2 are each H, CH2, O or S; and R1 and R2 are each H, Cr1C6 alkyl, C1C6 aryl, C1C12 alkylaryl, optionally substituted phenyl, C1C6 alkoxy, C1C6 thioalkoxy, F, Cl, Br or I. These compounds inhibit steroid sulfatase (STS), act as selective estrogen receptor modulators (SERMs), increase alkaline phosphatase (ALP) activity, and are useful in the treatment of medical conditions involving hormones such as breast cancer, prostate cancer, endometriosis, osteoporosis, benign prostatic hyperplasia and endometrial cancer.
    Type: Application
    Filed: August 1, 2014
    Publication date: July 14, 2016
    Inventors: Donald POIRIER, René MALTAIS
  • Publication number: 20140088053
    Abstract: The present application discloses 17? hydroxy steroid dehydrogenase (17? HSD) type 1, 3, 10 inhibitors and use thereof (alone and in combination) in the treatment of cancer and other afflictions. 17? HSD1 inhibitors include estradiol derivatives with a nieta-carbamoylbenzyl substituent at C 16. 17? HSD3/HSD10 inhibitors include androsterone derivatives substituted at the C3 position with a sulfonamide piperazine. Also disclosed are compounds that are inhibitors of both 17? HSD1 and 17? HSD3 that have a spiro-morpholine substituent at C20.
    Type: Application
    Filed: March 26, 2012
    Publication date: March 27, 2014
    Applicant: UNIVERSITÉ LAVAL
    Inventors: Donald Poirier, René Maltais, Jenny Roy
  • Patent number: 8653054
    Abstract: Novel chemical agents are described herein. More specifically, 2-(N-substituted piperazinyl) pregnane and 2-(N-substituted piperazinyl) androstane derivatives exhibiting cytotoxicity on a variety of cancer cell lines are disclosed herein.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: February 18, 2014
    Assignee: Universite Laval
    Inventors: Donald Poirier, Jenny Roy, Rene Maltais
  • Patent number: 8168627
    Abstract: Compounds having the structure (or their salts): are used to treat or reduce the likelihood of acquiring androgen-dependent diseases, such as prostate cancer, benign prostatic hyperplasia, polycystic ovarian syndrome, acne, hirsutism, seborrhea, androgenic alopecia and male baldness. The compounds can be formulated together with pharmaceutically acceptable diluents or carriers or otherwise made into any pharmaceutical dosage form. Combinations with other active pharmaceutical agents are also disclosed.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: May 1, 2012
    Assignee: Endorecherche, Inc.
    Inventors: Fernand Labrie, Rock Breton, Shankar Mohan Singh, Rene Maltais
  • Publication number: 20110312926
    Abstract: Novel chemical agents are described herein. More specifically, 2-(N-substituted piperazinyl) pregnane and 2-(N-substituted piperazinyl) androstane derivatives exhibiting cytotoxicity on a variety of cancer cell lines are disclosed herein.
    Type: Application
    Filed: November 25, 2009
    Publication date: December 22, 2011
    Applicant: UNIVERSITE LAVAL
    Inventors: Donald Poirier, Jenny Roy, Rene Maltais
  • Publication number: 20100227855
    Abstract: Compounds having the structure (or their salts): are used to treat or reduce the likelihood of acquiring androgen-dependent diseases, such as prostate cancer, benign prostatic hyperplasia, polycystic ovarian syndrome, acne, hirsutism, seborrhea, androgenic alopecia and male baldness. The compounds can be formulated together with pharmaceutically acceptable diluents or carriers or otherwise made into any pharmaceutical dosage form. Combinations with other active pharmaceutical agents are also disclosed.
    Type: Application
    Filed: March 16, 2010
    Publication date: September 9, 2010
    Applicant: ENDORECHERCHE, INC.
    Inventors: Fernand Labrie, Rock Breton, Shankar Mohan Singh, René Maltais
  • Patent number: 7709516
    Abstract: Compounds having the structure (or their salts): are used to treat or reduce the likelihood of acquiring androgen-dependent diseases, such as prostate cancer, benign prostatic hyperplasia, polycystic ovarian syndrome, acne, hirsutism, seborrhea, androgenic alopecia and male baldness. The compounds can be formulated together with pharmaceutically acceptable diluents or carriers or otherwise made into any pharmaceutical dosage form. Combinations with other active pharmaceutical agents are also disclosed.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: May 4, 2010
    Assignee: Endorecherche, Inc.
    Inventors: Fernand Labrie, Rock Breton, Shankar Mohan Singh, René Maltais
  • Publication number: 20060287327
    Abstract: Compounds having the structure (or their salts): are used to treat or reduce the likelihood of acquiring androgen-dependent diseases, such as prostate cancer, benign prostatic hyperplasia, polycystic ovarian syndrome, acne, hirsutism, seborrhea, androgenic alopecia and male baldness. The compounds can be formulated together with pharmaceutically acceptable diluents or carriers or otherwise made into any pharmaceutical dosage form. Combinations with other active pharmaceutical agents are also disclosed.
    Type: Application
    Filed: June 14, 2006
    Publication date: December 21, 2006
    Inventors: Fernand Labrie, Rock Breton, Shankar Singh, Rene Maltais