Patents by Inventor Pratap Reddy
Pratap Reddy 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: 20240300919Abstract: The present invention relates to a process for preparation of Batefenterol of Formula (I) or pharmaceutically acceptable salts thereof, and the process for the preparation of the chiral intermediate compounds including compound of Formula (VII) by chiral sulfide mediated epoxidation. The process involves preparation of the intermediate compounds of Formula (VII), followed by preparation of Batefenterol from the intermediate compounds of Formula (VII) via intermediate compounds of Formula (X) and Formula (XI); or via intermediate compounds of Formula (IX) and Formula (XI); or via intermediate compounds of Formula (VII) and Formula (XI); or via intermediate compounds of the Formula (XV) and Formula (XVI); or via intermediate compounds of the Formula (XIX) and Formula (XVI). The process is cost effective and gives higher yield and better purity.Type: ApplicationFiled: February 18, 2022Publication date: September 12, 2024Applicant: GBR LABORATORIES PRIVATE LIMITEDInventors: Pratap Reddy Gaddam, Samhitha Reddy Gaddam, Madaalasa Reddy Gaddam, Udaya Kumar Reddy Mosali
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Publication number: 20240208951Abstract: The present invention relates to a process for preparation of Navafenterol of Formula (I) and intermediate compounds of Formula (VII) and Formula (XIII) by chiral sulfide mediated epoxidation. The process involves preparation of the intermediate compounds of Formula (VII) and Formula (XIII) followed by preparation of Navafenterol from the compound of Formula (XIII) either by condensation with the compound of Formula (XVI); or via intermediates of the compound of Formula (XVIII) and compound of Formula (XV); or via intermediates of the compound of Formula (XI-a) and compound of Formula (XVI). The process uses simple raw materials and reagents. Further, the process is cost effective and gives higher yield and better purity.Type: ApplicationFiled: February 12, 2022Publication date: June 27, 2024Applicant: GBR LABORATORIES PRIVATE LIMITEDInventors: Pratap Reddy Gaddam, Samhitha Reddy Gaddam, Madaalasa Reddy Gaddam, Udaya Kumar Reddy Mosali
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Publication number: 20240140913Abstract: The present invention relates to a process for preparation of Abediterol of the Formula (I) or its pharmaceutically acceptable salts, and intermediate compounds including the compound of the Formula (VII) by chiral sulfide mediated epoxidation. The process involves preparation of the intermediate compounds followed by preparation of Abediterol from the intermediate compounds. The compound Abediterol having the formula I is synthesized by various routes from the intermediate compound of Formula (VII). The process is cost effective and gives higher yield and better purity. The process of the present invention uses simple raw materials and reagents; and does not use hypertoxic materials.Type: ApplicationFiled: February 9, 2022Publication date: May 2, 2024Applicant: GBR LABORATORIES PRIVATE LIMITEDInventors: Pratap Reddy Gaddam, Samhitha Reddy Gaddam, Madaalasa Reddy Gaddam, Udaya Kumar Reddy Mosali
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Patent number: 10414717Abstract: Disclosed is a process for preparing ?-agonist, 1-(4-amino-3,5-dichlorophenyl)-2-(tert-butylamino) ethanol, of Formula I. The process comprises refluxing 1-(4-amino-3,5-dichlorophenyl) ethanone of Formula II and selenium dioxide in the presence of 1,4-dioxane to form compound of Formula III. Further, compound of Formula III is heated at a temperature below 30° C. in the presence of t-butyl amine to form compound of Formula IV. The compound of Formula IV is treated with sodium borohydride to form compound of Formula I.Type: GrantFiled: August 4, 2016Date of Patent: September 17, 2019Assignee: Vamsi Lab Ltd.Inventors: G Pratap Reddy, M. Kesava Reddy
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Patent number: 10227305Abstract: The present invention relates to a process for preparing indacaterol or salts thereof. The process comprises of forming compound of Formula 1 by reacting compound of Formula 2 and compound of Formula 3 in the presence of a solvent to Form compound of Formula 4, which on removal of the protecting groups forms compound of Formula 1.Type: GrantFiled: August 20, 2015Date of Patent: March 12, 2019Inventors: G. Pratap Reddy, Venkataiah Sunku, Sunkaraneni Suresh Babu
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Patent number: 10059678Abstract: The present invention relates to a process for preparing olodaterol and intermediates thereof. The process comprises of forming compound of Formula 1 by reacting compound of Formula 2 or its acid salt with compound of Formula 3 in the presence of an organic solvent to obtain compound of Formula 4. Protecting groups are removed from compound of Formula 4 in the presence of a suitable solvent to form compound of Formula 1.Type: GrantFiled: September 9, 2015Date of Patent: August 28, 2018Inventor: G. Pratap Reddy
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Patent number: 8969558Abstract: There is provided a process for preparation of sitagliptin of Formula II or a pharmaceutically acceptable salt thereof by deprotection of Formula IX.Type: GrantFiled: December 5, 2013Date of Patent: March 3, 2015Assignee: Dr. Reddy's Laboratories LimitedInventors: Pratap Reddy Padi, Babu Ireni, Srinivas Polavarapu, Shailaja Padamata, Kavitha Nerella, Vijaya Anand Ramasamy, Ranga Reddy Vangala
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Publication number: 20140128607Abstract: There is provided salts and polymorphs of sitagliptin, processes for the preparation thereof, and pharmaceutical compositions comprising the same.Type: ApplicationFiled: December 5, 2013Publication date: May 8, 2014Applicants: Dr. Reddy's Laboratories, Inc., Dr. Reddy's Laboratories LimitedInventors: Pratap Reddy Padi, Babu Ireni, Srinivas Polavarapu, Shailaja Padamata, Kavitha Nerella, Vijaya Anand Ramasamy, Ranga Reddy Vangala
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Patent number: 8309724Abstract: There is provided an improved process for the preparation of Sitagliptin of Formula II by reduction of compound of Formula VIII to Formula IX followed by deprotection of Formula IX to afford Sitagliptin of Formula II.Type: GrantFiled: December 18, 2008Date of Patent: November 13, 2012Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, IncorporatedInventors: Pratap Reddy Padi, Babu Ireni, Srinivas Polavarapu, Shailaja Padamata, Kavitha Nerella, Vijaya Anand Ramasamy, Ranga Reddy Vangala
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Publication number: 20100274017Abstract: There is provided salts and polymorphs of sitagliptin, processes for the preparation thereof, and pharmaceutical compositions comprising the same.Type: ApplicationFiled: December 18, 2008Publication date: October 28, 2010Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.Inventors: Pratap Reddy Padi, Babu Ireni, Srinivas Polavarapu, Shailaja Padamata, Kavitha Nerella, Vijaya Anand Ramasamy, Ranga Reddy Vangala
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Publication number: 20100261908Abstract: Processes for the preparation of prasugrel and its pharmaceutically acceptable salts thereof. Also disclosed are polymorphic forms of prasugrel hydrochloride and processes for their preparation.Type: ApplicationFiled: November 7, 2008Publication date: October 14, 2010Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.Inventors: Pratap Reddy Padi, Seetha Rama Sarma Peri, Madhusudhan Reddy Ganta, Srinivas Polavarapu, Praveen Cherukupally, Babu Ireni, Shailaja Padamata, Krishna Jonnada, Krishna Vinigari, Kavitha Nerella
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Patent number: 7659406Abstract: A process for preparing valsartan.Type: GrantFiled: January 3, 2006Date of Patent: February 9, 2010Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.Inventors: Pratap Reddy Padi, Satya Narayana Bollikonda, Ananda Mohan Jasty, Suma Latha Yasareni, Vishal Dayaram Parmar
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Publication number: 20090286990Abstract: A process for preparing irbesartan comprises pentanoylation of cycloleucine in the presence of sodium hydroxide to form n-pentanoyl cycloleucine, condensing this product with 2-(4-aminomethyl phenyl) benzonitrile using dicyclohexyl carbodiimide and 1-hydroxy benzotriazole as a catalyst to form the 4-(&quest-N-pentanoyl amino) cyclopentamido methyl-2?-cyano biphenyl compound, and then cyclizing using trifluoroacetic acid in the presence of an aromatic solvent to form cyano irbesartan. Cyano irbesartan is converted to irbesartan by reaction with tributyltin chloride and sodium azide in the presence of an aromatic solvent.Type: ApplicationFiled: May 20, 2005Publication date: November 19, 2009Inventors: Reguri Buchi Reddy, Sunkari Sudhakar, Chaganti Sridhar, Somisetti Narender Rao, Sundaram Venkataraman, Padi Pratap Reddy, Bollikonda Satyanarayana
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Publication number: 20090054455Abstract: Co-crystals comprising aripiprazole and fumaric acid.Type: ApplicationFiled: February 2, 2007Publication date: February 26, 2009Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.Inventors: Surya Narayana Devarakonda, Krishnamurthi Vyas, Sivakumar Reddy Bommareddy, Pratap Reddy Padi, Balaji Raghupathy
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Publication number: 20090048272Abstract: Processes for preparing paliperidone.Type: ApplicationFiled: August 15, 2008Publication date: February 19, 2009Inventors: Pratap Reddy Padi, Satyanarayana Bollikonda, Surya Prabhakar Akundi, Praveen Cherukupally, Sashikanth Suthrapu, Saravanan Mohanarangam, Venkat Kiran Kandirelli, Malleswara Rao Chellu, Narasimha Rao Pagadala
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Publication number: 20080214823Abstract: A process for preparing amorphous montelukast sodium comprises removing solvent from a solution comprising montelukast sodium using agitated thin film drying.Type: ApplicationFiled: July 20, 2006Publication date: September 4, 2008Applicant: Dr. Reddy's Laboratories Ltd.Inventors: Pratap Reddy Padi, Satyanarayana Bollikonda, Alok Kumar Srivastava, Ravi Kumar Kasturi, Rajender Reddy Jinna, Narsimha Naidu Mopidevi
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Publication number: 20070017871Abstract: The current invention is concerned with methods and compositions for the removal of arsenic contamination from water. A method for binding As to oxidized metal coated pumice and method for making the same are disclosed. Water filters comprising oxidized metal coated pumice, such as oxidized iron coated pumice, are also provided.Type: ApplicationFiled: May 13, 2006Publication date: January 25, 2007Inventors: Pratap Reddy, Charles Turner
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Publication number: 20040182792Abstract: An apparatus for the photocatalyitc oxidation of common industrial effluent contaminants in aqueous solution includes a reactor and a thin film photocatalyst fixed to a support material like Cuddapah stone. The support material is preferably an inert material. The TiO2 preformed does not contain any adsorbent for making the thin film photocatalyst, The catalytic runs were carried out over TiO2 thin film fixed bed reactor. The study is extended to the immobilization of preformed TiO2 with a binder for making thin film using a simple spray technique on inert Cuddapah stone. This method of immobilization require no thermal treatment of the catalyst at high temperatures. The method is applicable for the photocatalytic treatment of industrial effluents at a higher scale. Also it is a method for preparing a photocatalyst adopted for the oxidation of industrial common effluent by simple spray technique.Type: ApplicationFiled: March 20, 2003Publication date: September 23, 2004Inventors: Machiraju Subrahmanyam, Pierre Boule, Durga Kumari Valluri, Maddigapu Pratap Reddy, Mohammed Noorjahan, Kondapuram Vijaya Raghavan