Oxygen Bonded Directly At The 12-position (e.g., Cholic Acids, Desoxycholic Acids, Dehydrocholic Acids, Etc.) Patents (Class 552/549)
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Patent number: 11433066Abstract: There is provided pharmaceutical compositions for the treatment of e.g. opioid dependency comprising microparticles of a pharmacologically-effective amount of buprenorphine, or a pharmaceutically-acceptable salt thereof, in associative admixture with particles comprising a weak acid, or particles comprising weakly-acidic buffer forming materials. The composition may further comprise a disintegrant and/or particles of a pharmacologically-effective amount of naloxone, or a pharmaceutically-acceptable salt thereof. The compositions are useful in the treatment of opioid dependency/addiction and/or pain.Type: GrantFiled: September 25, 2020Date of Patent: September 6, 2022Assignee: OREXO ABInventor: Andreas Fischer
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Patent number: 10160782Abstract: The present invention discloses method for preparing deoxycholic acid (DCA) or an ester thereof or a pharmaceutically acceptable salt thereof. Said compounds may be applied to remove a fat deposition.Type: GrantFiled: February 26, 2016Date of Patent: December 25, 2018Assignee: NORATECH PHARMACEUTICALS, INC.Inventors: Cheng-Gang Lin, Li Gui, Pan Chen, Zhi-Xuan Wang, Tong-Wei Guan, Yuan-Yuan Yin, Yu-Ling Lu
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Patent number: 10053486Abstract: Synthetic methods for preparing deoxycholic acid and intermediates thereof are provided.Type: GrantFiled: April 24, 2015Date of Patent: August 21, 2018Assignee: Kythera Biopharmaceuticals, Inc.Inventors: Achampeta Rathan Prasad, Roy A. Swaringen, Jr., John Gregory Reid, Robert M. Moriarty, Akhila Kumar Sahoo
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Patent number: 9127036Abstract: Bile acids and related compositions and methods of synthesis and use. More specifically, deoxycholic acid and related compositions, said compositions being free of all moieties of animal origin and free of pyrogenic moieties.Type: GrantFiled: August 12, 2010Date of Patent: September 8, 2015Assignee: KYTHERA BIOPHARMACEUTICALS, INC.Inventors: Robert M. Moriarty, Nathaniel E. David, Nadir Ahmeduddin Mahmood
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Publication number: 20150141679Abstract: Synthetic methods for preparing deoxycholic acid and intermediates thereof, high purity synthetic deoxycholic acid, compositions and methods of use are provided. Also, provided are processes for the synthesis of 12-keto or 12-?-hydroxysteroids from ?-9,11-ene, 11-keto or 11-hydroxy-?-steroids. This inversion is also directed to novel compounds prepared during the synthesis. This invention is also directed to the synthesis of deoxycholic acid starting from hydrocortisone.Type: ApplicationFiled: November 4, 2014Publication date: May 21, 2015Applicant: Kythera Biopharmaceuticals, Inc.Inventors: Robert M. Moriarty, Achampeta Rathan Prasad, John Gregory Reid, Roy A. Swaringen, JR.
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Patent number: 8883770Abstract: Bile acids and related compositions and methods of synthesis and use. More specifically, deoxycholic acid and related compositions, said compositions being free of all moieties of animal origin and free of pyrogenic moieties.Type: GrantFiled: January 14, 2013Date of Patent: November 11, 2014Assignee: Kythera Biopharmaceuticals, Inc.Inventors: Robert M. Moriarty, Nathaniel E. David, Nadir Ahmeduddin Mahmood
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Publication number: 20140107328Abstract: Chemoselective isolation of aliphatic hydroxyl group-containing and aromatic hydroxyl group-containing compounds is accomplished via formation of polymeric siloxyl ethers. Chemoselective release of aliphatic hydroxyl group-containing and aromatic hydroxyl group-containing compounds from polymeric siloxyl reagents is described.Type: ApplicationFiled: December 11, 2013Publication date: April 17, 2014Inventors: Erin E. CARLSON, Darci TRADER
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Publication number: 20130267721Abstract: Synthetic methods for preparing deoxycholic acid and intermediates thereof are provided.Type: ApplicationFiled: January 28, 2013Publication date: October 10, 2013Inventors: Achampeta Rathan Prasad, Roy A. Swaringen, JR., John Gregory Reid, Robert M. Moriarty, Akhila Kumar Sahoo
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Publication number: 20130261317Abstract: This invention relates generally to methods for preparing certain bile acids from non-mammalian sourced starting materials as well as to synthetic bile acids and compositions comprising such acids wherein the acids are characterized by a different C14 population than naturally occurring bile acids as well as being free from any mammalian pathogens. This invention is also directed to the synthesis of intermediates useful in the synthesis of such bile acids. Accordingly, the C ring of the steroidal scaffold is oxidized to provide a synthetic route and intermediates to DCA. This invention also provides synthetic methods for preparing deoxycholic acid or a salt thereof starting from aromatic steroids such as estrogen, equilenin, and derivatives thereof. This invention is also directed to intermediates such as 12-oxo or delta-9,11-ene steroids as well as novel processes for their preparation.Type: ApplicationFiled: September 19, 2011Publication date: October 3, 2013Applicant: KYTHERA BIOPHARMACEUTICALS, INC.Inventors: Robert M. Moriarty, Photon Rao
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Publication number: 20130252931Abstract: Bile acids and related compositions and methods of synthesis and use. More specifically, deoxycholic acid and related compositions, said compositions being free of all moieties of animal origin and free of pyrogenic moieties.Type: ApplicationFiled: August 12, 2010Publication date: September 26, 2013Inventors: Robert M. Moriarty, Nathaniel E. David, Nadir Ahmeduddin Mahmood
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Publication number: 20130085125Abstract: Synthesis and purification of deoxycholic acid and its salts are provided.Type: ApplicationFiled: June 14, 2012Publication date: April 4, 2013Inventors: Daniel J. Ganley, Jeremy Wilt
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Patent number: 8410083Abstract: The invention relates to compounds of Formula A: (A) or a pharmaceutically acceptable salt, solvate, hydrate, or prodrug thereof. The compounds of Formula A are TGR5 modulators useful for the treatment of various diseases, including obesity, insulin sensitivity, inflammation, cholestasis, and bile desaturation.Type: GrantFiled: January 18, 2008Date of Patent: April 2, 2013Assignee: Intercept Pharmaceuticals, Inc.Inventor: Roberto Pellicciari
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Patent number: 8383858Abstract: This invention relates to processes and intermediates for the preparation of an alpha-amino beta-hydroxy acid of Formula 1 wherein the variables R1, R?1 and R2 are defined herein and the compound of Formula 1 has an enantiomeric excess (ee) of 55% or greater.Type: GrantFiled: August 4, 2010Date of Patent: February 26, 2013Assignee: Vertex Pharmaceuticals IncorporatedInventors: Gerald J. Tanoury, Minzhang Chen, Young Chun Jung, Raymond E. Forslund
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Publication number: 20130041106Abstract: Chemoselective isolation of hydroxyl group-containing and carboxyl group-containing compounds is accomplished via formation of polymeric silyl ethers and polymeric siloxyl esters, respectively. Preparation of chemoselective polymeric reagents for capture of hydroxyl group containing compounds and carboxyl group containing compounds is described.Type: ApplicationFiled: August 10, 2012Publication date: February 14, 2013Inventors: Erin E. Carlson, Darci Trader, Antoinette Odendaal
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Patent number: 8367852Abstract: Synthetic methods for preparing deoxycholic acid and intermediates thereof are provided.Type: GrantFiled: May 25, 2011Date of Patent: February 5, 2013Assignee: Kythera Biopharmaceuticals, Inc.Inventors: Achampeta Rathan Prasad, Roy A. Swaringen, Jr., John Gregory Reid, Robert M. Moriarty, Akhila Kumar Sahoo
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Patent number: 8362285Abstract: Synthetic methods for preparing deoxycholic acid and intermediates thereof are provided.Type: GrantFiled: January 20, 2011Date of Patent: January 29, 2013Assignee: Kythera Biopharmaceuticals, Inc.Inventors: Achampeta Rathan Prasad, Roy A. Swaringen, Jr., John Gregory Reid, Robert M. Moriarty, Akhila Kumar Sahoo
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Publication number: 20120309728Abstract: The present invention relates to a compound of formula (I) for its use for reversing or inhibiting multidrug resistance.Type: ApplicationFiled: December 17, 2010Publication date: December 6, 2012Inventors: Catherine Grenot, Claude Cuilleron
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Publication number: 20120277198Abstract: The invention provides, in part, polyhydroxylated bile acids for treating biliary disorders, for example, biliary disorders arising out of cholestasis of portal hypertension. The invention also provides, in part, polyhydroxylated bile acids for stimulating bile flow. New compounds 2?,3?,7?,12?-tetrahydroxy-5?-cholanoic acid and 3?.4?,7?,12?-tetrahydroxy-5?-cholanoic acid are disclosed, uses thereof and synthesis thereof.Type: ApplicationFiled: February 27, 2012Publication date: November 1, 2012Inventors: VICTOR LING, RENXUE WANG, JONATHAN AHAB SHEPS
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Patent number: 8242294Abstract: Bile acids and related compositions and methods of synthesis and use. More specifically, deoxycholic acid and related compositions, said compositions being free of all moieties of animal origin and free of pyrogenic moieties.Type: GrantFiled: August 13, 2009Date of Patent: August 14, 2012Assignee: Kythera Biopharmaceuticals, Inc.Inventors: Robert M. Moriarty, Nathaniel E. David, Nadir Ahmeduddin Mahmood
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Patent number: 8114862Abstract: The invention relates to compounds of Formula A: or a salt, solvate, hydrate, or prodrug thereof. The compounds of Formula A are TGR5 modulators useful for the treatment of various diseases, including metabolic disease, inflammatory disease, liver disease, autoimmune disease, cardiac disease, kidney disease, cancer, and gastrointestinal disease.Type: GrantFiled: November 19, 2009Date of Patent: February 14, 2012Assignee: Intercept Pharmaceuticals, Inc.Inventor: Roberto Pellicciari
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Patent number: 7994351Abstract: Synthetic methods for preparing deoxycholic acid and intermediates thereof are provided.Type: GrantFiled: November 6, 2009Date of Patent: August 9, 2011Assignee: Kythera Biopharmaceuticals, Inc.Inventors: Achampeta Rathan Prasad, Roy A. Swaringen, Jr., John Gregory Reid, Robert M. Moriarty, Akhila Kumar Sahoo
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Patent number: 7982062Abstract: A process for the preparation of high purity cholanic acids, typically in purity equal to or higher than 99%.Type: GrantFiled: September 11, 2007Date of Patent: July 19, 2011Assignee: Dipharma Francis s.r.l.Inventors: Pietro Allegrini, Tiziano Scubla, Fausto Gorassini, Andrea Finco
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Patent number: 7932243Abstract: The present disclosure relates to methods and compositions to offset, ameliorate and/or alleviate one or more unwanted and/or adverse gastrointestinal effects. For example, in some embodiments, the present disclosure relates to compositions that include a bile acid, a carbohydrate and/or a pharmaceutical compound, wherein the pharmaceutical is associated with an adverse gastrointestinal effect in a subject (e.g., mammal or human). Non-limiting examples of pharmaceutical compounds may include a nonsteroidal anti-inflammatory drug, a gastric irritating drug (e.g., an antibiotic, an adrenal cortocoid steroid and an anti-cancer drug) and combinations thereof. The disclosure further relates to methods of ameliorating or eliminating at least one adverse gastrointestinal effects of a composition, comprising administering to a subject an aqueous solution comprising a bile acid and a carbohydrate.Type: GrantFiled: March 10, 2006Date of Patent: April 26, 2011Inventor: Seo Hong Yoo
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Patent number: 7902387Abstract: Synthetic methods for preparing deoxycholic acid and intermediates thereof are provided.Type: GrantFiled: May 16, 2008Date of Patent: March 8, 2011Assignee: Kythera Biopharmaceuticals, Inc.Inventors: Achampeta Rathan Prasad, Roy A. Swaringen, Jr., John Gregory Reid, Robert M. Moriarty, Akhila Kumar Sahoo
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Publication number: 20100267684Abstract: The present invention relates to a use of a biological surfactant as an anti-inflammatory agent and a tissue preservative solution. More particularly, the present invention is directed to an anti-inflammatory agent and a tissue preservative solution comprising a biological surfactant which blocks a reaction of a proinflammatory factor with a receptor by emulsifying the proinflammatory factor.Type: ApplicationFiled: November 16, 2009Publication date: October 21, 2010Applicant: SEOUL NATIONAL UNIVERSITY INDUSTRY FOUNDATIONInventors: Seung-yong Seong, Chang Gu Kang, Youn Hee Kim
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Patent number: 7772220Abstract: The present disclosure is related to clear aqueous solutions of one or more bile acids and either an aqueous soluble starch conversion product or a non-starch polysaccharide. Solutions of the disclosure may be administered to a subject in conjunction with a pharmaceutical compound having one or more toxic effects. In some embodiments, solutions of the disclosure are administered to a mammal in conjunction with a pharmaceutical compound associated with a peripherial neurotoxicity (e.g., cisplatin and/or suramin) to reduce or eliminate the neuropathic effect(s).Type: GrantFiled: October 14, 2005Date of Patent: August 10, 2010Inventor: Seo Hong Yoo
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Patent number: 7601708Abstract: This invention is directed to methods for providing sustained systemic concentrations of therapeutic or prophylactic agents such as GABA analogs following oral administration to animals. This invention is also directed to compounds and pharmaceutical compositions that are used in such methods.Type: GrantFiled: July 19, 2005Date of Patent: October 13, 2009Assignee: XenoPort, Inc.Inventors: Kenneth C. Cundy, Mark A. Gallop, Cindy X. Zhou
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Patent number: 7598235Abstract: This invention is directed to compounds that provide for sustained systemic concentrations of therapeutic or prophylactic agents following administration to animals. This invention is also directed to pharmaceutical compositions including and methods using such compounds.Type: GrantFiled: September 6, 2005Date of Patent: October 6, 2009Assignee: XenoPort, Inc.Inventors: Kenneth C. Cundy, Mark A. Gallop
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Patent number: 7501403Abstract: The present invention relates to the use of a bile acid or bile salt fatty acid conjugate of general formula II W-X-G in which G is a bile acid or bile salt radical, which, if desired, is conjugated in position 24 with a suitable amino acid, W stands for one or two fatty acid radicals having 14-22 carbon atoms and X stands for a suitable bonding member or for a direct C?C bond between said bile acid or bile salt radical and the fatty acid(s) or of a pharmaceutical composition comprising same for the reduction of Cholesterol in blood, for the treatment of Fatty Liver, Hyperglycemia and Diabetes.Type: GrantFiled: April 15, 2002Date of Patent: March 10, 2009Assignee: Galmed International LimitedInventor: Tuvia Gilat
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Patent number: 7141559Abstract: This invention relates to novel compounds that are liver selective glucocorticoid receptor antagonists, to methods of preparing such compounds, and to methods for using such compounds in the regulation of metabolism, especially lowering serum glucose levels, insulin levels, or lipid levels, and/or decreasing body weight.Type: GrantFiled: June 12, 2003Date of Patent: November 28, 2006Assignee: Karo Bio ABInventors: Richard D. Bishop, Russell Drew Cink, Bradley D. Gates, Lars T. Hagberg, Peer B. Jacobsen, Philip R. Kym, Chunqiu Lai, Marvin Robert Leanna, James T. Link, Steven J. Richards, Noah Tu, Tom W. von Geldern
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Patent number: 7002027Abstract: The present invention is directed to compositions and methods of treating cancer by gene therapy using a therapeutic gene formulated in a buffer comprising a delivery-enhancing agent. The delivery-enhancing agents of the invention can be used to formulate therapeutic or diagnostic agents, such as proteins, nucleic acids, antisense RNA, small molecules, etc., for administration to any tissue or organ having an epithelial membrane. The delivery-enhancing agents include detergents, alcohols, surfactants and other molecules.Type: GrantFiled: July 8, 1997Date of Patent: February 21, 2006Assignees: Canji, Inc., Schering CorporationInventors: Heidrun Engler, Tattanahalli L. Nagabhushan, Stephen Kenneth Youngster
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Patent number: 6984634Abstract: This invention is directed to compounds that provide for sustained systemic concentrations of therapeutic or prophylactic agents following administration to animals. This invention is also directed to pharmaceutical compositions including and methods using such compounds.Type: GrantFiled: October 9, 2001Date of Patent: January 10, 2006Assignee: XenoPort, Inc.Inventors: Kenneth C. Cundy, Mark A. Gallop
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Patent number: 6803030Abstract: Compounds able to chelate paramagnetic metal ions and the use thereof as contrast agents in the technique known as “Magnetic Resonance Imaging” (M.R.I.).Type: GrantFiled: August 27, 2002Date of Patent: October 12, 2004Assignee: Bracco Imaging S.p.A.Inventors: Christoph De Haen, Andrea Beltrami, Enrico Cappelletti, Luciano Lattuada, Mario Virtuani
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Patent number: 6793943Abstract: An object of the present invention is to provide a very effective health food exhibiting the effect near that which has been already achieved by the traditional Chinese medical science. The present invention relates to a health food product comprising cholic acid, especially to a health food product comprising cholic acid and isoflavone and/or isoflavone glycoside.Type: GrantFiled: April 10, 2001Date of Patent: September 21, 2004Assignee: Daicho Kikaku Incorporated CompanyInventor: Takao Daicho
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Patent number: 6624156Abstract: The present invention provides hybrid molecules and methods of synthesizing such hybrid molecules from a cholinergic agent and a bile acid. The hybrid molecules function as cholinergic agents and may be either cholinergic agonists or cholinergic antagonists. Further disclosed herein are compositions comprising hybrid cholinergic agents and methods of making such compositions. Methods of treating a patient having a cholinergic disorder are also disclosed.Type: GrantFiled: June 25, 2002Date of Patent: September 23, 2003Assignee: Board of Trustees of the University of ArkansasInventors: Jean-Pierre Raufman, Piotr Zimniak, Kunrong Cheng
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Patent number: 6589946Abstract: The present invention relates to bile acid or bile salt fatty acid conjugates (hereinafter called “BAFAC), to their use in dissolving cholesterol gallstones in bile, preventing their occurrence or recurrence, to their use in reducing or preventing arteriosclerosis and to methods for the treatment of said diseases. The conjugates are of the formula W—X—G in which G is a bile acid or bile salt radical, W stands for one or two saturated fatty acid radicals and X is either a direct bond or a bonding member between bile acid or bile salt and the fatty acid(s). The conjugation is advantageously performed at a position selected among the 3, 6, 7, 12 and 24 positions of the bile acid or bile salt nucleus. The fatty acids are preferably saturated fatty acids having 6-26 carbon atoms.Type: GrantFiled: February 21, 2002Date of Patent: July 8, 2003Assignee: Galmed International LimitedInventor: Tuvia Gilat
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Patent number: 6468975Abstract: Novel glucocorticoid receptor ligands and methods of treating diseases such as diabetes, wherein the ligands have general formula (I) wherein the variables are as defined by the present specification.Type: GrantFiled: February 11, 2002Date of Patent: October 22, 2002Assignee: Karo Bio ABInventors: Theresa Apelqvist, Jinchang Wu, Konrad Koehler
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Patent number: 6448420Abstract: A novel ester compound having an exo-form 2-alkylbicyclo[2.2.1]heptan-2-yl ester as the acid-decomposable site is used as a dissolution regulator to formulate a resist composition having a high sensitivity, resolution, etching resistance and storage stability.Type: GrantFiled: May 18, 2000Date of Patent: September 10, 2002Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takeshi Kinsho, Tsunehiro Nishi, Takeru Watanabe, Koji Hasegawa, Mutsuo Nakashima, Jun Hatakeyama
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Publication number: 20020115874Abstract: A novel ester compound having an exo-form 2-alkylbicyclo[2.2.1]heptan-2-yl ester as the acid-decomposable site is used as a dissolution regulator to formulate a resist composition having a high sensitivity, resolution, etching resistance and storage stability.Type: ApplicationFiled: May 18, 2000Publication date: August 22, 2002Inventors: Takeshi Kinsho, Tsunehiro Nishi, Takeru Watanabe, Koji Hasegawa, Mutsuo Nakashima, Jun Hatakeyama
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Publication number: 20020111338Abstract: This invention is directed to compounds that provide for sustained systemic concentrations of therapeutic or prophylactic agents following administration to animals. This invention is also directed to pharmaceutical compositions including and methods using such compounds.Type: ApplicationFiled: October 5, 2001Publication date: August 15, 2002Inventors: Kenneth C. Cundy, Mark A. Gallop, Cindy X. Zhou
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Publication number: 20020091111Abstract: The present invention relates to bile acid or bile salt fatty acid conjugates (hereinafter called “BAFAC), to their use in dissolving cholesterol gallstones in bile, preventing their occurrence or recurrence, to their use in reducing or preventing arteriosclerosis and to methods for the treatment of said diseases. The conjugates are of the formula W—X—G in which G is a bile acid or bile salt radical, W stands for one or two saturated fatty acid radicals and X is either a direct bond or a bonding member between bile acid or bile salt and the fatty acid(s). The conjugation is advantageously performed at a position selected among the 3, 6, 7, 12 and 24 positions of the bile acid or bile salt nucleus. The fatty acids are preferably saturated fatty acids having 6-26 carbon atoms.Type: ApplicationFiled: February 21, 2002Publication date: July 11, 2002Applicant: Galmed International LimitedInventor: Tuvia Gilat
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Patent number: 6342489Abstract: Bile acid metal salts of therapeutic interest and pharmaceutical and veterinary composition containing same for the treatment of anemias and other conditions are described.Type: GrantFiled: April 4, 2000Date of Patent: January 29, 2002Assignees: ICE s.r.l.Inventors: Beniamino Palmieri, Alessandro Medici, Enzo Bartoli
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Patent number: 6255502Abstract: A pharmaceutical composition contains an acid addition salt of a basic drug and a fatty acid or bile acid. The acid addition salts thus formed exhibit enhanced transmucosal and transdermal penetration of the basic drug. The acid addition salts, an inclusion complex containing said salts and a use of said salts are also disclosed.Type: GrantFiled: April 19, 1999Date of Patent: July 3, 2001Assignee: Farmarc Nederland B.V.Inventors: Lawrence John Penkler, Luéta-Ann De Kock, Darryl Vanstone Whittaker
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Patent number: 5610151Abstract: Monomeric bile acid derivatives, processes for their preparation and the use of these compounds as medicamentsMonomeric bile acid derivatives of the formula IZ--X--GS I,in which GS, X and Z have the meanings given, and processes for their preparation are described. The compounds have useful pharmacological properties and can therefore be used as medicaments.Type: GrantFiled: May 5, 1994Date of Patent: March 11, 1997Assignee: Hoechst AktiengesellschaftInventors: Heiner Glombik, Alfons Enhsen, Werner Kramer, G unther Wess
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Patent number: 5559258Abstract: Ethylenically unsaturated bile acid derivatives of the formula IG--X--A Iin which G, X and A have the meanings indicated, are described. They are suitable for the preparation of polymeric bile acid derivatives. Bile acid derivatives of the formula IVaG--X' IVain which G and X' have the meanings indicated, are also described. They are useful synthesis components for the preparation of pharmaceuticals.Type: GrantFiled: November 22, 1994Date of Patent: September 24, 1996Assignee: Hoechst AktiengesellschaftInventors: Alfons Enhsen, Heiner Glombik, Stefan M ullner, G unther Wess
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Patent number: 5541348Abstract: Novel bile acids according to the general formula ##STR1## wherein R.sub.1 represents a hydroxyl group, R.sub.2 and R.sub.3 both represent a hydrogen or a hydroxyl group, or R.sub.2 represents a hydroxyl group or a .beta. hydroxyl group and R.sub.3 represents a hydrogen or R.sub.3 represents a hydroxyl group and R.sub.2 represents a hydrogen, and R.sub.4 represents a (CH.sub.2).sub.n R.sub.5 wherein n is from 1 to 6, and R.sub.5 represents --0--PO(OH).sub.2, --CH(OH)COOH, a nitrogen containing saturated heterocyclic ring group, NR.sub.6 R.sub.7, wherein R.sub.6 and R.sub.7 are the same or different and each represent hydrogen or a C.sub.1 -C.sub.10 alkyl group or CO--R.sub.8 wherein R.sub.8 represents an amino acid moiety, R-phenylglycine, 12-aminododecanoic acid or 4-aminohippuric acid are synthesized from cholic, deoxycholic, chenodeoxycholic, ursodeoxycholic and lithocholic acids and iodo-derivatives thereof by known processes and/or by novel processes according to the present invention.Type: GrantFiled: March 10, 1994Date of Patent: July 30, 1996Assignee: National Research Council of CanadaInventors: Prabhat Ayra, Graham W. Burton
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Patent number: 5252729Abstract: The present invention is directed toward a process for extracting compounds from plant material, comprisinga) contacting hydrolyzed plant material with a supercritical fluid and optionally with a co-solvent and p1 b) recovering the compound from the supercritical fluid.In another embodiment, the present invention is directed toward a process for removing a compound from plant material, comprising contacting the plant material with an acid, a supercritical fluid and a co-solvent, and recovering the compound from the supercritical fluid. The sterols, diosgenin and sarsapogenin, are efficiently extracted from barbasco root and Yucca seed, respectively.Type: GrantFiled: October 23, 1991Date of Patent: October 12, 1993Assignee: Schering CorporationInventors: Michelle A. De Crosta, Peter Kabasakalian, Frederick J. F. Honold, Sr.
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Patent number: 4981983Abstract: New derivatives of chenodeoxycholic, ursodeoxy cholic, cholic and ursocholic acids, bearing a methyl group in the side chain in an alfa position to the carboxylic group, the corresponding nor- and di-nor- derivatives, and the corresponding conjugates with taurine and glycine, are described.The compounds of the invention are prepared by methylation of the esters with methyl iodide in the presence of lithium-dialkylamides.Type: GrantFiled: October 2, 1989Date of Patent: January 1, 1991Assignee: Gipharmex S.p.A.Inventors: Virginio Castagnola, E. Giuliano Frigerio, Roberto Pellicciari, Aldo Roda
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Patent number: 4927921Abstract: A compound of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 is methyl or ethyl, and A,B,C and D rings optionally containing at least one double bond and optionally substituted with at least one member of the group consisting of optionally protected --OH, .dbd.O, alkyl and alkoxy of 1 to 4 carbon atoms, halogen and alkenyl and alkynyl of 2 to 4 carbon atoms, R is selected from the group consisting of halogen, --OH, alkylthio and alkoxy of 1 to 6 carbon atoms, aralkoxy, arylthio and aralkylthio of 7 to 15 carbon atoms and ##STR2## R.sub.3 and R.sub.4 are individually hydrogen, or alkyl of 1 to 6 carbon atoms or aralkyl of 7 to 15 carbon atoms or taken together with the nitrogen form a heterocycle optionally containing another nitrogen or oxygen atom, excepting the product in which R is methoxy, R.sub.1 and R.sub.2 each represent methyl, A ring carries a 3.beta.-acetoxy function and B ring contains a double bond in 5(6) useful as intermediates for the preparation of 20-keto-pregnanes.Type: GrantFiled: December 4, 1987Date of Patent: May 22, 1990Assignee: Roussel UclafInventors: Michel Vivat, Jean Buendia
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Patent number: 4921999Abstract: A method is provided for making tertiary butyl esters by effecting reaction between an organic carboxylic acid and isobutylene in the presence of an effective amount of trifluoromethane sulfonic acid at temperatures below about -7.degree. C. Tertiary butyl esters are useful as dissolution inhibitors for novolak resins.Type: GrantFiled: August 23, 1988Date of Patent: May 1, 1990Assignee: General Electric CompanyInventor: Michael J. O'Brien