The Hetero Ring Is Four-membered Patents (Class 549/510)
  • Patent number: 6476242
    Abstract: 2-debenzoyl-4-deacetyl paclitaxel, antineoplastic analogs thereof and intermediates are taught, as well as the formation of the compound, analogs and intermediates. The compound, analogs and intermediates may be used to form pharmaceutical compositions having anti-neoplastic activity. Further, the compound, analogs and intermediates may be used to treat cancer when applied in an effective amount by means such as a pharmaceutical composition.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: November 5, 2002
    Assignees: Bristol-Myers Squibb Company, Virginia Tech Intellectual Properties, Inc.
    Inventors: David George Ian Kingston, Mahendra Devichand Chordia, Prakash G. Jagtap, John Kadow
  • Publication number: 20020161238
    Abstract: Novel oxazolidines finding utility as intermediates in the preparation of C-13 acyloxy sidechain-bearing taxanes such as paclitaxel and analogs thereof. The present invention also relates to novel methods of coupling the oxazolidines to form the aforementioned taxanes, and to methods of preparing the oxazolidines.
    Type: Application
    Filed: December 11, 2001
    Publication date: October 31, 2002
    Inventors: John K. Thottathil, Ivan D. Trifunovich
  • Patent number: 6469050
    Abstract: An antitumor compound of formula (5): Also provided by the present invention is a method of preparing a compound of formula (5) whereby diesterification of the alcohol groups located at the 2′and 7 positions of paclitaxel is followed by the hydrolysis of the 2′hexanoate group resulting in 7-hexanoyltaxol.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: October 22, 2002
    Inventors: Christopher K. Murray, Qun Y. Zheng, Sagar R. Shakya
  • Patent number: 6469186
    Abstract: A process for the purification of paclitaxel and/or cephalomannine and/or 10-DAB III and/or 9-DHAB III is described. A series of extractions, separations, and purifications provides these products in commercial quantities with high purity. The source for these natural products is from readily available renewable biomaterials, such as leaves and stems from the yew, T. canadensis.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: October 22, 2002
    Assignee: Actipharm, Inc.
    Inventors: Gertrude C. Kasitu, Japheth Noah, Qasim Khan
  • Publication number: 20020151579
    Abstract: A process for the purification of paclitaxel and/or cephalomannine and/or 10-DAB III and/or 9-DHAB III is described. A series of extractions, separations, and purifications provides these products in commercial quantities with high purity. The source for these natural products is from readily available renewable biomaterials, such as leaves and stems from the yew, T. canadensis.
    Type: Application
    Filed: November 7, 2001
    Publication date: October 17, 2002
    Inventors: Gertrude C. Kasitu, Japheth Noah, Qasim Khan
  • Patent number: 6465625
    Abstract: Highly specific biocatalytic reactions have been used to create a population of taxol derivatives.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: October 15, 2002
    Assignee: Albany Molecular Research, Inc.
    Inventors: Jonathan S. Dordick, Douglas S. Clark, Peter C. Michels, Yuri L. Khmelnitsky
  • Patent number: 6465221
    Abstract: The present invention relates to a method of producing a taxane-type diterpene wherein a cell and/or a tissue of a plant which produces the taxane-type diterpene is cultured in the presence of at least one substance selected from the group consisting of coronatines, a bacterium which produces the coronatines, a culture solution or a culture extract of such bacterium, cyclic polysaccharides, fatty acids, and an imino or amino derivative of jasmonic acids, then the taxane-type diterpene is recovered from the resulting cultures.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: October 15, 2002
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Yukihito Yukimune, Yasuhiro Hara, Hiroaki Tan, Ikuo Tomino
  • Publication number: 20020147335
    Abstract: Taxane derivatives having an alkyl substituted C13 side chain.
    Type: Application
    Filed: April 29, 2002
    Publication date: October 10, 2002
    Applicant: Florida State University
    Inventors: Robert A. Holton, Ki-Byung Chai, Hamid Idmoumaz, Hossain Nadizadeh, Yukio Suzuki
  • Patent number: 6462208
    Abstract: Taxane derivatives having alternative C7 substituents.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: October 8, 2002
    Assignee: Florida State University
    Inventors: Robert A. Holton, Ki-Byung Chai
  • Patent number: 6458976
    Abstract: A taxoid of formula (7), a method for making the taxoid, a pharmaceutical composition containing the taxoid, and a method for treating tumors by administering the taxoid: wherein R1 is a branched or unbranched C3-C5 alkyl or alkenyl radical, CF2H, or (S)-2,2-dimethylcyclopropyl; R8 is a C1-C4 alkyl radical; and R7 is F, Cl, MeO, vinyl, Me, or N3.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: October 1, 2002
    Assignee: The Research Foundation of State University of New York
    Inventor: Iwao Ojima
  • Patent number: 6458568
    Abstract: A method for the continuous synthesis of baccatin-III is performed by means of the enzymatic acetylations of 10-deacetyl baccatin-III (10-DAB) in an enzyme reactor. This objective is accomplished by a method, for which an aqueous reaction batch is used, which contains a partially purified or a very pure acetyl transferase from a Taxus species and synthesis components, especially 10-DAB, acetyl compounds or optionally an acetyl coenzyme A, which can be regenerated, a protective colloid and optionally a buffer substance in solution. The solution is separated by a semipermeable membrane from an organic solvent, which serves as extraction agent for baccatin-III, the reaction batch being regenerated at regular intervals in an aqueous buffer system and the solvent continuously being exchanged. By conducting the reaction, the product can be removed continuously from the reaction batch for the partial synthesis of taxol and taxoter. By the above method, achievable yields are increased significantly.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: October 1, 2002
    Assignee: Institut fuer Bioanalytik, Umwelt-Toxikologie und Biotechnologie Halle GmbH
    Inventors: Konrad Glund, Matthias Hoffmann, Wolfram Weckwerth, Rainer Zocher
  • Patent number: 6458977
    Abstract: A process for preparing N-acyl, N-sulfonyl and N-phosphoryl substituted isoserine esters in which a metal or an ammonium alkoxide is reacted with a &bgr;-lactam.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: October 1, 2002
    Assignee: Florida State University
    Inventor: Robert A. Holton
  • Publication number: 20020137955
    Abstract: The present invention provides a novel semi-synthetic method of producing a variety of novel taxane derivatives. The method involves the reaction of a phenylisoserine derivative with a suitably blocked Baccatin III derivative to produce a taxane substrate that may be further modified to form Pactitaxel and other potentially useful taxane derivatives.
    Type: Application
    Filed: March 23, 2001
    Publication date: September 26, 2002
    Applicant: ScinoPharm Taiwan, Ltd.
    Inventors: George Schloemer, Yung-Fa Chen, Chien Hsin Lin, Wlodzimierz Daniewski
  • Patent number: 6455575
    Abstract: The present invention concerns antitumor compounds. More particularly, the invention provides novel taxane derivatives, pharmaceutical compositions thereof, and their use as antitumor agents.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: September 24, 2002
    Assignee: Bristol-Myers Squibb Company
    Inventors: Jerzy Golik, Dolatrai Vyas, John J. Wright, Henry Wong, John F. Kadow, John K. Thottathil, Wen-Sen Li, Murray A. Kaplan, Robert K. Perrone, Mark D. Wittman
  • Patent number: 6452025
    Abstract: The present invention relates to a method of producing paclitaxel from a protected coupled ester compound having a formula: wherein P1 is a hydrogenatable protecting group, comprising deprotecting the 7-O-position and 3′-N-position of the protected coupled ester compound to form a first intermediate compound, benzoylating the first intermediate compound at the 3′-N-position thereby to form a second intermediate compound, and deprotecting the second intermediate compound by replacing P1 with hydrogen in the presence of an acid. The present invention also provides chemical compounds useful in the production of paclitaxel.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: September 17, 2002
    Assignee: NaPro BioTherapeutics, Inc.
    Inventors: Jan Zygmunt, James D. McChesney
  • Patent number: 6452024
    Abstract: A process for the extraction and purification of Paclitaxel from a natural source of taxanes, comprising extracting Paclitaxel with an organic solvent from a natural source of taxanes, and treating the raw material with a base or an acid to obtain a biomass by precipitation. The biomass is isolated and dried, and resin and natural pigments are removed. The biomass is then dissolved in acetone and at least one non-polar solvent is added, until a Paclitaxel-enriched oily phase is obtained. The Paclitaxel-enriched oily phase is then treated with a base or an acid to obtain a second biomass, which is recovered by precipitation and dried. A solution of the second biomass in a volatile solvent is chromatographically purified at least once and crystallized.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: September 17, 2002
    Assignee: Chaichem Pharmaceuticals International
    Inventors: Trung Bui-Khac, Nicolas Dupuis
  • Publication number: 20020128498
    Abstract: The present invention relates to a semi-synthetic process to convert a naturally occurring taxane into a suitable starting material for the synthesis of paclitaxel and related compounds. Specifically, the present invention relates to a process for the conversion of 9-dihydro-13-acetylbaccatin III into a 7-protected baccatin III which can then be used as starting material for the synthesis of taxane derivatives such as paclitaxel, docetaxel, cephalomannine and other taxanes structurally related to baccatin III. The method as described uses a preparative scale technique which is amenable to commercial scale-up.
    Type: Application
    Filed: December 22, 2000
    Publication date: September 12, 2002
    Inventors: Lolita Zamir, Gaetan Caron
  • Patent number: 6448417
    Abstract: The present invention relates to a method of producing paclitaxel or a paclitaxel analog comprising the esterification of C-7, C-10 di-CBZ 10-deacetylbaccatin III with an N-carbamate protected, C-2-protected 3-phenyl isoserine side chain. The C-7, C-10 carbobenzyloxy groups are then replaced with hydrogen and an acyl group is substituted at the C-3′ nitrogen. The resulting compound is acylated at the C-10 hydroxyl position, and deprotected at the C-2′ position by replacing the hydroxyl protecting group with hydrogen to produce paclitaxel or a paclitaxel analog. The present invention also relates to alternative methods of acylating a 10-hydroxy paclitaxel analog. The first method comprises dissolving a 10-hydroxy paclitaxel analog in an acceptable ether solvent therefor to form a first solution at a first temperature.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: September 10, 2002
    Assignee: NaPro BioTherapeutics, Inc.
    Inventors: Nicholas J. Sisti, Herbert R. Brinkman, James D. McChesney, Medhavi C. Chander, Xian Liang, Jan Zygmunt
  • Patent number: 6437154
    Abstract: The present invention discloses a process for the conversion of a mixture of taxol analogues 7-xylosyl-10-deacetylbaccatin taxols of the formula 2 where R is C6H5, CH3C═CHCH3 or C5H11 into 10-deacetylbaccatin III of the formula 1 by dissolving the taxol analogue of formula 2 in a polar solvent, reacting the resultant solution with a base at a temperature of 20-50° C. for a time period in the range of 20-40 hours, and isolating 7-xyloxyl-10-deacetylbaccatin III, dissolving the 7-xylosyl-10-deacetylbaccatin III in a polar solvent, reacting the resultant solution with a periodate at 20-40° C. for a time period in the range of 20-40 hours to cleave the diol system of the xyloside into dialdehyde, treating the generated dialdehyde in an organic acid medium with salts of amine at 0-40° C. for 12-18 hours and isolating 10-deacetylbaccatin III of formula 1.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: August 20, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Sunil Kumar Chattopadhyay, Sachin Srivastava, Vijay Kumar Mehta
  • Patent number: 6436931
    Abstract: A cytotoxic agent comprising one or more taxanes linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more taxanes covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier, diluent or excipient. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more taxanes linked to a cell binding agent. Novel sulfur-containing taxanes.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: August 20, 2002
    Assignee: Immunogen Inc.
    Inventors: Ravi V. J. Chari, Walter A. Blättler
  • Patent number: 6433198
    Abstract: An enzymatic hydroxylation method for the preparation of compounds useful as intermediates in the preparation of taxanes such as 6-&agr;-hydroxy-7-deoxypaclitaxel, wherein one or more C-6 hydrogen-bearing taxanes are contacted with an enzyme or microorganism capable of hydroxylating said C-6 carbon to give C-6 hydroxyl-bearing taxane.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: August 13, 2002
    Assignee: Bristol-Myers Squibb Company
    Inventors: Ronald L. Hanson, Ramesh N. Patel
  • Publication number: 20020107409
    Abstract: This invention is directed to novel halogenated paclitaxel derivatives, processes for their preparation and use as effective anti-tumor agents.
    Type: Application
    Filed: August 23, 2001
    Publication date: August 8, 2002
    Applicant: Xechem, Inc.
    Inventors: Ramesh C. Pandey, Luben K. Yankov
  • Patent number: 6428989
    Abstract: The present invention discloses a method for producing a taxane-type diterpene(s) by culturing cells of a taxane-type diterpene-producing plant, comprising one or both of the the following steps (a) and (b) to increase the ratio of those cell clusters suitable in size for diterpene production: (a) at least one operation for removing large cell clusters is conducted with a sieve and/or a filter during preculture of the cells to be supplied to main culture for the production of taxane-type diterpenes or at the time of cell transfer from one preculture to the subsequent preculture; (b) the cells are cultured under strong agitation conditions.
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: August 6, 2002
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Yukihito Yukimune, Kouichi Matsubara, Yasuhiro Hara
  • Publication number: 20020103330
    Abstract: A naphthalene derivative, binaphthalene derivative and biphenyl derivative, all having an oxetane group, capable of being cationically polymerized and a cationically curable compound containing a naphthalene derivative having an oxetanyl group and an aromatic compound having an epoxy group or an oxetanyl group.
    Type: Application
    Filed: December 13, 2001
    Publication date: August 1, 2002
    Applicant: Toagosei Co., Ltd.
    Inventors: Akira Kuriyama, Naokazu Ito, Tetsuya Suzuta, Takashi Tsuda
  • Publication number: 20020102624
    Abstract: In an assay method in which a member of a specific binding pair is detected by means of an optically detectable reaction, the improvement wherein the optically detectable reaction includes the reaction, with an enzyme, of a dioxetane having the formula 1
    Type: Application
    Filed: September 25, 2001
    Publication date: August 1, 2002
    Inventor: Irena Y. Bronstein
  • Patent number: 6420130
    Abstract: The invention provides a compound, useful as an optical probe or sensor of the activity of at least one cytochrome P450 enzyme, and methods of using the compound to screen candidate drugs, and candidate drugs identified by these methods.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: July 16, 2002
    Assignee: Aurora Biosciences Corporation
    Inventors: Lewis R. Makings, Gregor Zlokarnik
  • Publication number: 20020091274
    Abstract: Taxane derivatives having an amino substituted C13 side chain.
    Type: Application
    Filed: February 25, 2002
    Publication date: July 11, 2002
    Applicant: Florida State University
    Inventors: Robert A. Holton, Hossain Nadizadeh, Kasthuri Rengan, Chunlin Tao
  • Patent number: 6417380
    Abstract: Compounds having the formula: wherein T is a polycycloalkylidene group (e.g., adamant-2-ylidene); R is a C1-20 alkyl, aralkyl or cycloalkyl group; and Y is a fluorescent chromophore (e.g., m-phenylene), produced by reacting a compound having the formula: with an R-ylating agent (e.g., R2 SO4) in the presence of an alkali metal alkoxide in a polar aprotic solvent. Also, compounds having the formula: are produced by reacting a compound having the formula: with wherein X is an electronegative leaving group (e.g., a halogen anion such as chloride ion) in the presence of a Lewis base (e.g., a trialkyl-amine) dissolved in an aprotic organic solvent (e.g., benzene or toluene). Also, compounds having the formula are produced by reacting a compound of the formula with a tetra-O-acylated-O-hexopyranoside halide, then hydrolyzing off the protective acyl groups.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: July 9, 2002
  • Publication number: 20020086897
    Abstract: A cytotoxic agent comprising one or more taxanes linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more taxanes covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier, diluent or excipient. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more taxanes linked to a cell binding agent. Novel sulfur-containing taxanes.
    Type: Application
    Filed: January 30, 2002
    Publication date: July 4, 2002
    Inventors: Ravi V. J. Chari, Walter A. Blattler
  • Publication number: 20020087013
    Abstract: Methods of preparing methylthiomethyloxy taxoids of formula (XXXIV) 1
    Type: Application
    Filed: December 31, 2001
    Publication date: July 4, 2002
    Applicant: Aventis Pharma S.A.
    Inventors: Herve Bouchard, Jean-Dominique Bourzat, Alain Commercon, Iwao Ojima
  • Patent number: 6410751
    Abstract: Stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility and storage stability are provided as well as synthetic processes and intermediates used in their preparation. Dioxetanes further substituted with two or more water-solubilizing groups disposed on the dioxetane structure and an additional fluorine atom or lower alkyl group provide superior performance by eliminating the problem of reagent carryover when used in assays performed on capsule chemistry analytical systems. These dioxetanes display substantially improved stability on storage. Compositions comprising these dioxetanes, a non-polymeric cationic surfactant enhancer and optionally a fluorescer, for providing enhanced chemiluminescence are also provided.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: June 25, 2002
    Assignee: Lumigen, Inc.
    Inventors: Hashem Akhavan-Tafti, Renuka DeSilva, Kumar Thakur, Zahra Arghavani
  • Patent number: 6410757
    Abstract: The object of the invention is to develop baccatin derivatives useful for preparing taxoid compounds such as paclitaxel and a process for the producing the same. The invention provides baccatin derivatives represented by the general formula (I) as well as a process for producing baccatin derivatives represented by the general formula (I) above, which comprises allowing a baccatin represented by the general formula (II) to react with a &bgr;-ketoester in the absence of a catalyst or in the presence of a tin compound or an amine base, preferably under reduced pressure.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: June 25, 2002
    Assignees: Bio Research Corporation of Yokohama, Ensuiko Sugar Refining Co. Ltd.
    Inventors: Tadakatsu Mandai, Hiroshi Okumoto, Katsuyoshi Nakanishi, Koji Hara, Katsuhiko Mikuni, Kozo Hara
  • Patent number: 6410756
    Abstract: The present invention relates to a new taxane having the structure as in Formula I, and its analogs as depicted in Formula II and Formula III. The invention includes novel semi-synthetic and isolation methods for the preparation of these novel taxanes. Specifically, the present invention relates to the new taxane Canadensol isolated from plants of the Taxus genus in particular, Taxus canadensis. The present invention further relates to the use of these new taxanes as anticancer agents.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: June 25, 2002
    Assignee: Institut National de la Recherche Scientifique
    Inventors: Lolita Zamir, Gaéton Caron, Yi Feng Zheng
  • Publication number: 20020077341
    Abstract: Taxanes having a carbamoyloxy substituent at C(10), a hydroxy substituent at C(7), and a range of C(2), C(9), C(14), and side chain substituents.
    Type: Application
    Filed: February 2, 2001
    Publication date: June 20, 2002
    Inventors: Robert A. Holton, Weishuo Fang
  • Patent number: 6407268
    Abstract: 4-Benzoylpyrazoles of the formula I where: R1 and R2 are each hydrogen, mercapto, nitro, halogen, cyano, thiocyanato, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C2-C6-alkenyl, C2-C6-alkynyl, —OR10, —OCOR10, —OSO2R10, —S(O)nR10, —SO2OR10, —SO2NR3R10, —NR10SO2R10 or —NR10COR; Q is a pyrazole of the formula II,  which is attached in position 4 and, Substituted 4-benzoylpyralozoles.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: June 18, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Engel, Ernst Baumann, Wolfgang von Deyn, Regina Luise Hill, Uwe Kardorff, Guido Mayer, Martina Otten, Joachim Rheinheimer, Oliver Wagner, Matthias Witschel, Ulf Misslitz, Helmut Walter
  • Patent number: 6403343
    Abstract: This invention relates to a method of producing a taxane-type diterpene(s) wherein tissues or cells of a plant which produces taxane-type diterpene(s) is cultured in the presence of at least one selected from the group consisting of jasmonic acids, compounds containing a heavy metal, complex ions containing a heavy metal, heavy metal ions, amines and antiethylene agents, a method of producing a taxane-type diterpene wherein the tissues or the cells of the plant are cultured by controlling the oxygen concentration in a gas phase in a culture vessel to less than the oxygen concentration in the atmosphere from the initial stage of the culture, or by controlling the dissolved oxygen concentration in a fluid medium which is in contact with the tissue or the cell to less than the saturated dissolved oxygen concentration at that temperature from the initial stage of the culture, a method of producing a taxane-type diterpene wherein the tissue or the cell of the plant is cultured in a culture vessel, while oxygenic g
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: June 11, 2002
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Yukihito Yukimune, Yasuhiro Hara, Yosuke Higashi, Naoto Ohnishi, Homare Tabata, Chuzo Suga, Kouichi Matsubara
  • Patent number: 6403635
    Abstract: The present invention is a method of preventing or reducing atherosclerosis or restenosis, and a pharmaceutical preparation used therefor. In particular, it is a method of preventing or reducing atherosclerosis or restenosis after arterial injury by treatment with a low dose of a microtubule stabilizing agent such as taxol or a water soluble taxol derivative. The low dose used in the present invention prevents artery blockage while minimizing any negative side effects associated with the drug.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: June 11, 2002
    Assignee: The United States of America as represented by the Secretary of the Department of Health and Human Services
    Inventors: James L. Kinsella, Steven J. Sollot
  • Publication number: 20020068833
    Abstract: The present invention relates to novel intermediates for the hemisynthesis of taxanes and to their processes of preparation. The compounds of the present invention include precursor compounds of taxane side chains.
    Type: Application
    Filed: April 18, 2001
    Publication date: June 6, 2002
    Applicant: Societe d'Etude et de Recherche en Ingenierie Pharmaceutique Seripharm
    Inventors: Luc Chanteloup, Bruno Chauveau, Christine Corbin, Robert Dhal, Sonia Le Guen, Arnaud Lamy, Antoine Leze, Jean-Pierre Robin
  • Publication number: 20020068755
    Abstract: Taxanes having a heterosubstituted acetate substituent at C(10), a hydroxy substituent at C(7), and a range of C(2), C(9), C(14), and side chain substituents.
    Type: Application
    Filed: February 2, 2001
    Publication date: June 6, 2002
    Inventor: Robert A. Holton
  • Patent number: 6399792
    Abstract: The present invention is directed to photoresist cross-linkers selected from the group consisting of a cross-linker monomer represented by following Chemical Formula 1, and homopolymers and copolymers thereof. wherein X1, X2, R, R′, R″, R1, R2, p, q and s are those defined herein. Such cross-linkers are suitable for use in photolithography processes employing KrF(248 nm), ArF(193 nm), E-beam, ion-beam or EUV light sources.
    Type: Grant
    Filed: September 11, 2001
    Date of Patent: June 4, 2002
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Keun Kyu Kong, Jae Chang Jung, Myoung Soo Kim, Hyoung Gi Kim, Hyeong Soo Kim, Ki Ho Baik
  • Publication number: 20020065305
    Abstract: Taxanes having a heterosubstituted acetate substituent at C(7), a hydroxy substituent at C(10), and a range of C(2), C(9), C(14), and side chain substituents.
    Type: Application
    Filed: February 2, 2001
    Publication date: May 30, 2002
    Inventor: Robert A. Holton
  • Patent number: 6395771
    Abstract: The invention provides novel paclitaxel derivatives obtained by effecting modifications at C2′, C3′ and/or C7 positions of paclitaxel, said derivatives being useful in inhibiting the growth of cancer of lung, breast, ovary, cervix or leukemia, and pharmaceutical compositions comprising such derivatives.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: May 28, 2002
    Assignee: Dabur Research Foundation
    Inventors: Sunder Ramadoss, Anand Vardhan, Manu Jaggi, Arvind Kumar Sharma
  • Patent number: 6392063
    Abstract: Provided herein is a taxane having a hydrocarbon attached at the 2′ and/or 7 positions, the hydrocarbon's alpha position being occupied by a “hydrolysis-promoting group” (“HPG”). In one embodiment, the hydrolysis promoting group is stereospecifically attached to the a-carbon of the hydrophobic taxane. The Substitution of an HPG for the methylene unit ordinarily occupying the alpha position allows for enhanced in vivo hydrolysis of the hydrocarbon-taxane bond, and hence, for enhanced taxane therapeutic activity. Also provided herein are taxane-containing compositions, and methods of administering taxanes to animals, including those afflicted with cancers or inflammatory diseases.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: May 21, 2002
    Assignee: The Liposome Company, Inc.
    Inventors: Shaukat Ali, J. Craig Franklin, Imran Ahmad, Eric Mayhew, Soumendu Bhattacharya, Gil Koehane, Andrew S. Janoff
  • Patent number: 6392061
    Abstract: This invention relates to novel processes for making (2S, 3S, 5S) oxetanone derivative lipase inhibitor compounds and intermediates therefor, which processes for producing such derivatives that are useful as lipase inhibitors are capable of being scaled to commercial quantities. Further the invention relates to processes for producing salts and for producing pharmaceutical compositions compounds comprising at least one such oxetanone derivative or salt, as well as methods for using such compounds and compositions for inhibiting lipases.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: May 21, 2002
    Assignee: Zpro Chemical, Inc.
    Inventor: John Jason Gentry Mullins
  • Publication number: 20020058821
    Abstract: Taxane derivatives having alternative C2 substituents.
    Type: Application
    Filed: December 12, 2001
    Publication date: May 16, 2002
    Applicant: Florida State University
    Inventors: Robert A. Holton, Chunlin Tao
  • Patent number: 6387946
    Abstract: New taxoids of general formula (I): their preparation and pharmaceutical compositions containing them. The new products of general formula (I) in which Z represents a radical of general formula (II): display noteworthy antitumour and antileukaemic properties.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: May 14, 2002
    Assignee: Aventis Pharma S.A.
    Inventors: Hervé Bouchard, Jean-Dominique Bourzat, Alain Commerçon
  • Publication number: 20020052443
    Abstract: Branched, substantially non-antigenic polymers are disclosed. Conjugates prepared with the polymers and biologically active molecules such as proteins and peptides demonstrate extended circulating life in vivo. Substantially fewer sites on the biologically active material are used as attachment sites. Methods of forming the polymer, conjugating the polymers with biologically active moieties and methods of using the conjugates are also disclosed.
    Type: Application
    Filed: April 7, 2000
    Publication date: May 2, 2002
    Inventors: Richard B Greenwald, Anthony J Martinez
  • Publication number: 20020052517
    Abstract: The present invention relates to chemical compounds that are useful in the production of taxanes.
    Type: Application
    Filed: May 22, 2001
    Publication date: May 2, 2002
    Inventors: Charles S. Swindell, Nancy Krauss
  • Publication number: 20020052518
    Abstract: Provided herein is a taxane having a hydrocarbon attached at the 2′ and/or 7 positions, the hydrocarbon's alpha position being occupied by a “hydrolysis-promoting group” (“HPG”). In one embodiment, the hydrolysis promoting group is stereospecifically attached to the &agr;-carbon of the hydrophobic taxane. The Substitution of an HPG for the methylene unit ordinarily occupying the alpha position allows for enhanced in vivo hydrolysis of the hydrocarbon-taxane bond, and hence, for enhanced taxane therapeutic activity. Also provided herein are taxane-containing compositions, and methods of administering taxanes to animals, including those afflicted with cancers or inflammatory diseases.
    Type: Application
    Filed: August 29, 2001
    Publication date: May 2, 2002
    Inventors: Shaukat Ali, J. Craig Franklin, Imran Ahmad, Eric Mayhew, Soumendu Bhattacharya, Gil Koehane, Andrew S. Janoff
  • Publication number: 20020051827
    Abstract: A method for extracting taxanes such as taxol, comprising the use of supercritical fluids.
    Type: Application
    Filed: September 13, 2001
    Publication date: May 2, 2002
    Inventor: Jayaprakash B. Nair