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).
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Publication number: 20250115588Abstract: The present application relates to resolvin analogs having anti-inflammatory and antioxidant properties, uses and methods using the same. More specifically, the present application relates to compounds of formula (I) or an enantiomer, isomer, salt or solvate thereof.Type: ApplicationFiled: January 20, 2023Publication date: April 10, 2025Applicant: VALORISATION RECHERCHE HSCM, LIMITED PARTNERSHIPInventors: Mohamed BENDERDOUR, Julio FERNANDES, René MALTAIS, Jean-Yves SANCÉAU
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Publication number: 20240390293Abstract: Derivatives of 10S, 17S-diHIDA (protectin DX, PDX) and medicinal uses thereof are disclosed. These derivatives are specialized pro-resolving mediators (SPRMs). In specific embodiments, said derivatives are used in to prevent or treat viral infections (including influenza and coronavirus infections), insulin resistance, diabetes, and inflammatory disorders.Type: ApplicationFiled: June 23, 2022Publication date: November 28, 2024Applicant: UNIVERSITÉ LAVALInventors: René MALTAIS, André MARETTE, Donald POIRIER, Jean-Yves SANCÉAU, Guy BOIVIN
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Publication number: 20240287127Abstract: Novel chemical agents are described herein. More specifically, a novel inhibitor of 17?-HSD7 for decreasing estradiol concentrations while restoring dihydrotestosterone (DHT) concentrations in breast cancer cells is disclosed herein. In a particular embodiment, the inhibitor of 17?-HSD7 has the following structure: (Formula I) A process for producing the novel inhibitors of 17?-HSD7 and their use in the manufacture of pharmaceutical formulations and/or combinations is also disclosed.Type: ApplicationFiled: June 16, 2022Publication date: August 29, 2024Applicant: UNIVERSITÉ LAVALInventors: Sheng-Xiang LIN, Donald POIRIER, René MALTAIS, Jean-Yves SANCÉAU
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Publication number: 20230303474Abstract: 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: ApplicationFiled: July 29, 2021Publication date: September 28, 2023Applicant: UNIVERSITÉ LAVALInventors: André MARETTE, René MALTAIS, Donald POIRIER, Jean-Yves SANCÉAU
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Patent number: 11174282Abstract: 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: GrantFiled: June 2, 2017Date of Patent: November 16, 2021Assignee: UNIVERSITÉ LAVALInventors: Donald Poirier, René Maltais, Martin Perreault
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Patent number: 11072632Abstract: 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: GrantFiled: March 26, 2012Date of Patent: July 27, 2021Assignee: UNIVERSITÉ LAVALInventors: Donald Poirier, Jenny Roy, Rene Maltais
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Publication number: 20200002372Abstract: 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: ApplicationFiled: June 2, 2017Publication date: January 2, 2020Inventors: Donald POIRIER, René MALTAIS, Martin PERREAULT
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Patent number: 9708305Abstract: 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: GrantFiled: August 1, 2014Date of Patent: July 18, 2017Assignee: UNIVERSITÉ LAVALInventors: Donald Poirier, René Maltais
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Publication number: 20160200685Abstract: 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: ApplicationFiled: August 1, 2014Publication date: July 14, 2016Inventors: Donald POIRIER, René MALTAIS
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Publication number: 20140088053Abstract: 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: ApplicationFiled: March 26, 2012Publication date: March 27, 2014Applicant: UNIVERSITÉ LAVALInventors: Donald Poirier, René Maltais, Jenny Roy
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Patent number: 8653054Abstract: 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: GrantFiled: November 25, 2009Date of Patent: February 18, 2014Assignee: Universite LavalInventors: Donald Poirier, Jenny Roy, Rene Maltais
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Patent number: 8168627Abstract: 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: GrantFiled: March 16, 2010Date of Patent: May 1, 2012Assignee: Endorecherche, Inc.Inventors: Fernand Labrie, Rock Breton, Shankar Mohan Singh, Rene Maltais
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Publication number: 20110312926Abstract: 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: ApplicationFiled: November 25, 2009Publication date: December 22, 2011Applicant: UNIVERSITE LAVALInventors: Donald Poirier, Jenny Roy, Rene Maltais
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Publication number: 20100227855Abstract: 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: ApplicationFiled: March 16, 2010Publication date: September 9, 2010Applicant: ENDORECHERCHE, INC.Inventors: Fernand Labrie, Rock Breton, Shankar Mohan Singh, René Maltais
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Patent number: 7709516Abstract: 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: GrantFiled: June 14, 2006Date of Patent: May 4, 2010Assignee: Endorecherche, Inc.Inventors: Fernand Labrie, Rock Breton, Shankar Mohan Singh, René Maltais
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Publication number: 20060287327Abstract: 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: ApplicationFiled: June 14, 2006Publication date: December 21, 2006Inventors: Fernand Labrie, Rock Breton, Shankar Singh, Rene Maltais