Three-membered Nitrogen Containing Hetero Ring Is Cyclo In The Tetracyclo Ring System (e.g., Mitomycin C, Etc.) Patents (Class 548/422)
  • Patent number: 8865130
    Abstract: The presently disclosed subject matter provides compositions that selectively bind cyclooxygenase-2 and comprise a therapeutic and/or diagnostic moiety. Also provided are methods for using the disclosed compositions for diagnosing (i.e., by imaging) a target cell and/or treating a disorder associated with a cyclooxygenase-2 biological activity.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: October 21, 2014
    Assignee: Vanderbilt University
    Inventors: Lawrence J. Marnett, Md. Jashim Uddin, Brenda C. Crews
  • Patent number: 8778914
    Abstract: The present invention relates to a prodrug, comprising a pharmaceutically and/or diagnostically active compound, and one or more bisphosphonate groups, to a process for producing such a prodrug, and to a pharmaceutical composition comprising said prodrug, to be used for the treatment of bone-related disorders such as bone cancer.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: July 15, 2014
    Assignee: KTB Tumorforschungsgesellschaft mbH
    Inventors: Felix Kratz, Katrin Hochdoerffer
  • Publication number: 20130052138
    Abstract: The presently disclosed subject matter provides compositions that selectively bind cyclooxygenase-2 and comprise a therapeutic and/or diagnostic moiety. Also provided are methods for using the disclosed compositions for diagnosing (i.e., by imaging) a target cell and/or treating a disorder associated with a cyclooxygenase-2 biological activity.
    Type: Application
    Filed: March 27, 2012
    Publication date: February 28, 2013
    Applicant: Vanderbilt University
    Inventors: Lawrence J. Marnett, Md. Jashim Uddin, Brenda C. Crews
  • Patent number: 6713633
    Abstract: Novel chemical species capable of simultaneously alkylating double-stranded DNA and cleaving the same; methods for alkylating and cleaving DNA by using these species; and anticancer agents with the use of these compounds. Compounds represented by the following general formula (I) which are capable of simultaneously alkylating double-stranded DNA and cleaving the same; a method for alkylating DNA and a method for cleaving double stranded DNA by using these compounds; and medicinal compositions with the use of these compounds: B—L—A(I) wherein B represents a chemical structure capable of recognizing the base sequence of DNA, for example, optionally substituted pyrrole-imidazole polyamide; A represents a chemical structure capable of binding to one base of DNA, for example, the alkylation moiety of duocarmycin A; and L represents a linker capable of binding the chemical structures A and B, for example, vinyl.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: March 30, 2004
    Assignee: Japan Science and Technology Corporation
    Inventors: Hiroshi Sugiyama, Zhi-Fu Tao, Isao Saito
  • Patent number: 6576780
    Abstract: The current invention discloses hydroxyamidino derivatives useful as nitric oxide synthase inhibitors.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: June 10, 2003
    Assignee: GD Searle & Company
    Inventors: Rolando E. Gapud, Timothy J. Hagen, E. Ann Hallinan, Donald W. Hansen, Jr., Barnett S. Pitzele, Suzanne S. Metz, R. Keith Webber, Foe S. Tjoeng, Robert E. Manning, Mihaly V. Toth
  • Patent number: 6429212
    Abstract: It is to provide a cyclic imide derivative which is useful as an active ingredient of a pharmaceutical composition. A pharmaceutical composition which comprises, a cyclic imide derivative represented by the general formula (I): wherein Q1 is a single bond, —CH2—, —O—, —S— or —NH—, each of Q2 and Q3 is —C(O)—, —C(S)— or —CH2—, provided that at least one of Q2 and Q3 is —C(O)— or —C(S)—, Z is a single bond or a lower alkanediyl group, R is an aryl group which may be substituted or a cycloalkyl group which may be substituted, X is a nitro group, an amino group which may be acylated, a cyano group, a trifluoromethyl group, a hydroxyl group, a halogen atom, an alkyl group, an alkoxy group or an alkylthio group, m is an integer of from 0 to 4, and when m is 2 or above, X may be the same or different, or its salt.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: August 6, 2002
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventor: Yuichi Hashimoto
  • Patent number: 6355820
    Abstract: There is disclosed a chiral molecular magnet having characteristics exhibiting a monocrystal, a magnetic property, an optical activity, a transparent color and a relatively high transition temperature. This chiral molecular magnet is formed of a monocrystal represented by a general formula [Mn(L)]3[Cr(CN)6]2.4H2O (wherein L is optically active (R or S)-1,2-diamines and derivatives thereof or optically active (R or S)-1,3-diamines and derivatives thereof).
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: March 12, 2002
    Assignee: Okazaki National Research Institutes
    Inventor: Katsuya Inoue
  • Patent number: 5780585
    Abstract: A prodrug of the formula (I): ##STR1## where R.sup.1 is a group such that the compound R--NH.sub.2 represents actinomycin D, doxorubicin, mitomycin C, or a nitrogen mustard of the formula (IV): ##STR2## a prodrug of the formula (II): ##STR3## where R.sup.1 is a group such that the compound R.sup.2 OH is a phenolic nitrogen mustard; and processes whereby the prodrugs shown above are made in which a prodrug precursor compound is reacted with 4-nitrobenzyl chloroformate under anhydrous conditions.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 14, 1998
    Assignee: Cancer Research Campaign Technology Limited
    Inventors: Gillian Anlezark, Roger Melton, Roger Sherwood, Thomas Connors, Frank Friedlos, Michael Jarman, Richard Knox, Anthony Mauger, Caroline Joy Springer
  • Patent number: 5776907
    Abstract: The present invention provides conjugates of mitomycin C or derivatives thereof and oligonucleotides. A conjugate of the present invention corresponds to formula I, below: ##STR1## where R is H, CH.sub.3, or C(O)SCH.sub.3, R' is O or NH, m is an integer from 1 to 10 and Ogn is an oligonucleotide. Pharmaceutical compositions and methods of using such conjugates to inhibit gene product expression are also provided.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: July 7, 1998
    Assignee: Texas Biotechnology Corporation
    Inventors: Harold L. Kohn, Nam Huh, Timothy P. Kogan, Ajay A. Rege
  • Patent number: 5776962
    Abstract: Substituted lactone compounds are useful in the treatment of precancerous lesions and neoplasms.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 7, 1998
    Assignees: Cell Pathways, Inc., University of Arizona
    Inventors: Paul Gross, Gerhard Sperl, Rifat Pamukcu, Klaus Brendel
  • Patent number: 5703111
    Abstract: This invention relates to a stable, easy to constitute, injectable formulation of anticancer agent BMY-25067. More specifically, the present invention concerns a formulation of BMY-25067 obtained from lyophilizing a solution comprising up to 4 mg of BMY-25067 per mL of 65% t-butanol/water, further comprising about 2% PVP (K-12 or K-17), optionally comprising pharmaceutically acceptable carrier(s).
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: December 30, 1997
    Assignee: Bristol-Myers Squibb Company
    Inventors: Uday S. Gogate, Shreeram N. Agharkar, Lawan Phusanti
  • Patent number: 5693751
    Abstract: This invention is a water-soluble high molecular polymerized drug comprising a water-soluble clock copolymer having a hydrophilic segment and a hydrophobic pharmacological-functioning segment to side chain of which a drug is bonded.The hydrophilic first segments of the present invention include polyethylene glycol, polysaccharides, polyacrylamide, and so on.The hydrophobic segments being attached to a drug include polyaspartic acid, polyglutamic acid, polylysine, or derivatives thereof.Drugs to be attached to the hydrophobic segment include anti-cancer drugs, drugs for central nerve, drugs for circulatory organs, and so on.
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: December 2, 1997
    Assignee: Research Development Corporation of Japan
    Inventors: Yasuhisa Sakurai, Teruo Okano, Kazunori Kataoka, Noriko Yamada, Shohei Inoue, Masayuki Yokoyama
  • Patent number: 5629427
    Abstract: The present invention relates to analogues of 2,7-diaminomitosene, a mitomycin C metabolite, useful as antitumor, antimicrobial and/or antiviral agents. These analogues involve functionalization of the N-2 nitrogen with organic groups.
    Type: Grant
    Filed: August 26, 1993
    Date of Patent: May 13, 1997
    Inventor: Dwight M. Peterson
  • Patent number: 5606017
    Abstract: Provided are drug/ligand compounds of Formula (I): ##STR1## in which D is a drug moiety;n is an integer from 1 to 10;p is an integer from 1 to 6;Y is O or NH.sub.2.sup.+ Cl.sup.- ;z is 0 or 1;q is about 1 to about 10;X is a ligand; and,A is a Michael Addition Adduct.In a preferred embodiment, the ligand is an immunoglobulin, preferably a chimeric antibody or fragment thereof. Also provided are formulations comprising as an active ingredient a compound of Formula (I), intermediates useful for preparing the compounds of Formula (I), processes for preparing the compounds of Formula (I), and methods for using the compounds of the invention.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: February 25, 1997
    Assignee: Bristol-Myers Squibb Company
    Inventors: David Willner, Pamela A. Trail, H. Dalton King, Sandra J. Hofstead, Robert S. Greenfield, Gary R. Braslawsky
  • Patent number: 5559245
    Abstract: New intermediates, and processes therefor, provide an efficient method for deriving 4-amino-1,2,2a,3,4,5-hexahydrobenz[cd]indoles, which are themselves intermediates to useful CNS agents, from the Kornfeld-Woodward ketone and like compounds. Preferred embodiments provide means for the preparation of substantially pure enantiomers of the desired 4-amino-1,2,2a,3,4,5-hexahydrobenz[cd]indole.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: September 24, 1996
    Assignee: Eli Lilly and Company
    Inventors: Thomas J. Kress, M. Robert Leanna, Michael J. Martinelli, Barry C. Peterson
  • Patent number: 5523411
    Abstract: The present invention relates to the synthesis of mitomycin and analogs thereof that are useful as anticancer antibiotics. The invention further relates to analogs of mitomycin, which can be prepared according to the methods of synthesis provided. The synthetic method of the invention provides for reacting a derivitized indole with a dialkylvinylsulfonium salt to yield a tricyclic skeleton having the precursors of the fourth ring in one step, followed by an oxidation step or steps to close the fourth ring and prepare mitomycin or a related compound.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: June 4, 1996
    Assignee: Rutgers University
    Inventors: Leslie Jimenez, Zheng Wang
  • Patent number: 5374739
    Abstract: The present invention provides novel mitomycin analogs containing a cyclic acetal or thioacetal group. These compounds are mitomycin C analogs in which the 7-amino group bears a 5-membered heterocyclic substituent. Mitomycin C is an antitumor agent of established utility, and the 7-N-substituted mitosane analogs thereof have similar utility.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: December 20, 1994
    Assignee: Bristol-Myers Squibb Company
    Inventors: Takushi Kaneko, Henry S. L. Wong, Terrence W. Doyle
  • Patent number: 5364856
    Abstract: 6-heterocyclic-4-amino-1,3,4,5-tetrahydrobenz[cd]indoles are provided which are useful in modifying the function of serotonin in mammals.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: November 15, 1994
    Assignee: Eli Lilly and Company
    Inventors: Richard N. Booher, David E. Lawhorn, Charles J. Paget, Jr., John M. Schaus
  • Patent number: 5352798
    Abstract: 7-(Diphenylmethyl)oxy-9a-methoxymitosane is a novel intermediate for conversion into 7-amino and 7-oxy-9a-methoxymitosanes and is also useful for inhibiting mammalian tumor growth. The compound is prepared by reacting 7-hydroxy-9a-methoxymitosane with diazodiphenylmethane. In a preferred reaction, the compound is prepared from mitomycin C via 7-hydroxy-9a-methoxymitosane without drying (water removal). The intermediate is advantageously converted to the very effective anti-tumor agent 7-[2-(4-nitrophenyldithio)ethylamino]-9a-methoxymitosane in unexpectedly high yields using a two step process where the first step constitutes conversion to 7-[2-(2-pyridyldithio)ethylamino]-9a-methoxymitosane or 7-[2-(3-nitro-2-pyridyldithio)ethylamino]-9a-methoxymitosane.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: October 4, 1994
    Assignee: Bristol-Myers Squibb Company
    Inventors: Daniel A. Benigni, Kenton L. Shultis
  • Patent number: 5334611
    Abstract: Novel mitomycin derivatives represented by the formula (I) are obtained by introducing a substituent at the 6-position. The mitomycin derivatives of the present invention have an antitumor activity.
    Type: Grant
    Filed: August 3, 1993
    Date of Patent: August 2, 1994
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hitoshi Arai, Yutaka Kanda, Motomichi Kono, Masaji Kasai, Tadashi Ashizawa, Katsushige Gomi
  • Patent number: 5218126
    Abstract: Disclosed are mitomycin derivatives of formula (I): ##STR1## where W represents halogen; X represents methoxy, amino or ethylenimino; Y represents hydrogen or methyl; Z represents hydrogen or methyl; and one of R.sup.1 and R.sup.2 represents carbamoyloxymethyl, and the other represents hydrogen. The derivatives are usable as an antitumor and antibacterial agent.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: June 8, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hitoshi Arai, Masaji Kasai, Katsushige Gomi, Tadashi Ashizawa
  • Patent number: 5180825
    Abstract: Disclosed in a mitomycin derivative represented by the formula (I): ##STR1## wherein W is a heterocyclic group.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: January 19, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hitoshi Arai, Motomichi Kono, Masaji Kasai, Katsushige Gomi, Tadashi Ashizawa
  • Patent number: 5180670
    Abstract: A method for purification of mitomycin C comprises;a. a step of treating the culture of a mitomycin C-producing microorganism with reverse phase adsorption resin to adsorb mitomycin C onto the resin;b. a step of eluting mitomycin C with ethyl acetate out of the resin;c. a step of adding phosphate buffer to the eluate and then evaporating ethyl acetate;d. a step of passing, under pressure, the residue remaining after the evaporation through a column packed with a reverse phase adsorbent having a small particle diameter to adsorb mitomycin C onto the resin;e. a step of eluting mitomycin C with aqueous methanol out of the resin under pressure;f. a step of treating the eluate with a reverse phase adsorption resin to adsorb mitomycin C onto the resin;g. a step of eluting mitomycin C with methanol out of the resin; and,h. a step of concentrating the methanol eluate to crystallize mitomycin C.By this method, mitomycin C can be efficiently purified in an industrial scale.
    Type: Grant
    Filed: December 18, 1990
    Date of Patent: January 19, 1993
    Assignee: Kyowa Hakko Kogyo, Ltd.
    Inventors: Satoshi Iwata, Michio Shiomi
  • Patent number: 5175303
    Abstract: 7-(Diphenylmethyl)oxy-9a-methoxymitosane is a novel intermediate for conversion into 7-amino and 7-oxy-9a-methoxymitosanes and is also useful for inhibiting mammalian tumor growth. The compound is prepared by reacting 7-hydroxy-9a-methoxymitosane with diazodiphenylmethane. In a preferred reaction, the compound is prepared from mitomycin C via 7-hydroxy-9a-methoxymitosane without drying (water removal). The intermediate is advantageously converted to the very effective anti-tumor agent 7-[2-(4-nitrophenyldithio) ethylamino]-9a-methoxymitosane in unexpectedly high yields using a two step process where the first step constitutes conversion to 7-[2-(2-pyridyldithio) ethylamino]-9a-methoxymitosane. or 7-[2-(3-nitro-2-pyridyldithio)ethylamino]-9a-methoxymitosane.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: December 29, 1992
    Assignee: Bristol-Myers Squibb Company
    Inventors: Daniel A. Benigni, Kenton L. Shultis, Henry S. L. Wong
  • Patent number: 5103018
    Abstract: Mitomycin derivatives containing substituted dithioethylamino groups at the 7th position are provided. The mitomycin derivatives according to the present invention are superior to mitomycin C with respect to their improved anti-tumour activity and toxicity. More particularly, they exhibit a wider tolerance of dosage against Sarcoma 180A solid tumour as well as a better survival time and weaker bone marrow supression against P388.Furthermore, certain compounds exhibit a high water-solubility which is advantageous for pharmaceutical purposes. Excellent anti-tumour agents may readily be prepared by using the derivatives of the present invention.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: April 7, 1992
    Assignee: Kyowa Hakko Kogyo Kabushiki Kaisha
    Inventors: Kono Motomichi, Saito Yutaka, Kanda Yutaka, Kasai Masaji, Sato Akira, Morimoto Makoto, Ashizawa Tadashi
  • Patent number: 5099016
    Abstract: The present invention provides novel mitomycin analogs containing a disulfide group and processes for the preparation thereof. These compounds are mitomycin A analogs in which the 7-alkoxy group bears an organic substituent incorporating a disulfide group. Mitomycin A is an antibiotic of established utility, and the 7-O-substituted mitosane analogs thereof have similar utility.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: March 24, 1992
    Assignee: Bristol-Myers Company
    Inventors: Dolatrai M. Vyas, Terrence W. Doyle, Richard A. Partyka
  • Patent number: 5098926
    Abstract: Novel methods for treatment of neoplastic disease states in animals, which methods comprise administering a therapeutically effective amount of a compound of the formula IV, ##STR1## wherein: Y is hydrogen or lower alkyl; and X is a radical of the formula --O--R, wherein R is:a substituted lower alkyl radical selected from the group consisting of mono- and di-hydroxy lower alkyl, cyano lower alkyl, halo lower alkyl, lower alkyl amino lower alkyl, hydroxy lower alkylthio lower alkyl, hydroxy lower alkyldithio lower alkyl, di-lower alkoxy lower alkyl, hydroxy or lower alkoxy substituted lower alkoxy lower alkyl, cyclo lower alkyl substituted lower alkyl; and lower alkyl substituted dioxolanyl lower alkyl ora lower alkenyl radical; ora lower alkynyl radical; ortetrahydro furanyl or a lower alkyl substituted derivative thereof, oxiranyl lower alkyl, tetrahydropyranyl lower alkyl, or furanyl lower alkyl.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: March 24, 1992
    Assignee: University Patents, Inc.
    Inventors: William A. Remers, Salah M. Sami
  • Patent number: 5097036
    Abstract: The present invention provides novel mitomycin analogs containing a disulfide group and processes for the preparation thereof. These compounds are mitomycin A analogs in which the 7-alkoxy group bears an organic substituent incorporating a disulfide group. Mitomycin A is an antibiotic of established utility, and the 7-O-substituted mitosane analogs thereof have similar utility.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: March 17, 1992
    Assignee: Bristol-Myers Company
    Inventors: Dolatrai M. Vyas, Terrence W. Doyle, Richard A. Partyka
  • Patent number: 5091523
    Abstract: The invention relates to certain derivatives of mitomycins A and C and the use thereof to treat bacterial infections and to supress the growth of cancer cells. The invention also relates to processes for the preparation of the mitomycin derivatives of the invention.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: February 25, 1992
    Assignee: Georgetown University
    Inventors: Abdolhossen Talebian, Dianna Green, Charles Hammer, Philip Schein, Alem Ghiorghis, Robert R. Clarke
  • Patent number: 5075454
    Abstract: 7-(Diphenylmethyl)oxy-9a-methoxymitosane is a novel intermediate for conversion into 7-amino and 7-oxy-9a-methoxymitosanes and is also useful for inhibiting mammalian tumor growth. The compound is prepared by reacting 7-hydroxy-9a-methoxymitosane with diazodiphenylmethane. In a preferred reaction, the compound is prepared from mitomycin C via 7-hydroxy-9a-methoxymitosane without drying (water removal). The intermediate is advantageously converted to the very effective anti-tumor agent 7-[2-(4-nitrophenyldithio)ethylamino]-9a-methoxymitosane in unexpectedly high yields using a two step process where the first step constitutes conversion to 7-[2-(2-pyridyldithio)ethylamino]-9a-methoxymitosane or 7-[2-(3-nitro-2-pyridyldithio)ethylamino]-9a-methoxymitosane.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: December 24, 1991
    Assignee: Bristol-Myers Squibb Company
    Inventors: Daniel A. Benigni, Kenton L. Shultis, Henry S. L. Wong
  • Patent number: 5068349
    Abstract: Novel mitomycin derivatives are characterized by a substituent on the C.sub.6 -methyl group. The mitomycin derivatives exhibit anti-tumor and antibacterial activity and have low toxicity.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: November 26, 1991
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yutaka Kanda, Masaji Kasai, Hitoshi Arai, Makoto Morimoto, Tadashi Ashizawa
  • Patent number: 5023253
    Abstract: Novel methods for treatment of neoplastic disease states in animals, which methods comprise administering a therapeutically effective amount of a compound of the formula V, ##STR1## wherein: Y is hydrogen of lower alkyl; and X is a radical of the formula --O--R, wherein R is:N,N-di (hydroxy lower alkyl)amino lower alkyl, or tri-lower alkoxy silyl lower alkyl, or cyclo lower alkyl, or halo substituted lower alkoxy lower alkyl, or tetrahydro pyranyl, or carboethoxy lower alkyl, or 1-lower alkyl pyrrolidinyl lower alkyl, or N-pyrrolidinyl lower alkyl, or 1-lower alkyl pyrrolydinyl, or dioxanyl, or hydroxy lower alkenyl, or hydroxy lower alkyl thio lower alkyl thio lower alkyl, or dioxanyl lower alkyl, or lower alkyl thio lower alkyl, or phenyl thio lower alkyl, or phenoxy lower alkyl, or thiophenyl lower alkyl, or 1-lower alkyl piperidyl, or alkyl carbonyl amino alkyl, or N-piperidyl lower alkyl, or lower alkoxy lower alkyl or lower alkyl thio hydroxy lower alkyl, or 1-lower alkyl N-piperazinyl lower alkyl, or N
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: June 11, 1991
    Assignee: University Patents, Inc.
    Inventors: Remers, William A., Sami, Salah M.
  • Patent number: 5021423
    Abstract: Mitomycin derivatives having the formula ##STR1## wherein X is acyl, lower alkyl, alkoxycarbonyl aryloxycarbonyl or aralkoxycarbonyl;Y is hydrogen or methyl;Z is hydrogen, methyl, acyl or allyloxycarbonyl;one of R.sub.1 and R.sub.2 represents carbamoyloxymethyl and the other represents hydrogen, or R.sub.1 and R.sub.2 together represent methylene, show antibacterial and antitumor activities.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: June 4, 1991
    Assignee: Kyowa Hakko Kogyo Kabushiki Kaisha
    Inventors: Yutaka Kanda, Hitoshi Arai, Masaji Kasai, Makoto Morimoto
  • Patent number: 4927943
    Abstract: The present invention provides novel mitomycin analogs containing a disulfide group and processes for the preparation thereof. These compounds are mitomycin A analogs in which the 7-alkoxy group bears an organic substituent incorporating a disulfide group. Mitomycin A is an antibiotic of established utility, and the 7-O-substituted mitosane analogs thereof have similar utility.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: May 22, 1990
    Assignee: Bristol-Myers Company
    Inventors: Dolatrai M. Vyas, Terrence W. Doyle, Richard A. Partyka
  • Patent number: 4888341
    Abstract: Novel methods for treatment of neoplastic disease states in animals, which methods comprise administering a therapeutically effective amount of a compound of the formula IV, ##STR1## wherein: Y is hydrogen or lower alkyl; and Z is a radical of the formula --O--R, wherein R is:a substituted lower alkyl radical selected from the group consisting of mono- and di-hydroxy lower alkyl, cyano lower alkyl, halo lower alkyl, lower alkyl amino lower alkyl, hydroxy lower alkylthio lower alkyl, hydroxy lower alkyldithio lower alkyl, di-lower alkoxy lower alkyl, hydroxy or lower alkoxy substituted lower alkoxy lower alkyl, and cyclo lower alkyl substituted lower alkyl; ora lower alkenyl radical; ora lower alkynyl radical; ora substituted or unsubstituted oxygen-containing heterocyclic radical selected from the group consisting of tetrahydro furanyl or lower alkyl substituted derivatives thereof, lower alkyl substituted oxiranyl, lower alkyl substituted dioxolanyl, lower alkyl substituted pyranyl, or lower alkyl substitute
    Type: Grant
    Filed: September 4, 1984
    Date of Patent: December 19, 1989
    Assignee: University Patents, Inc.
    Inventors: William A. Remers, Salah M. Sami
  • Patent number: 4880825
    Abstract: Mitomycin derivatives having potent anti-tumor activity having the formula: ##STR1## wherein one of R.sub.1 and R.sub.2 represents carbamoyloxymethyl and the other represents hydrogen or R.sub.1 and R.sub.2 are bonded together to form methylene;X is hydrogen or halogen;Y is hydrogen or methyl;Z is hydrogen, methyl or acyl; andn is an integer of 2 or 3.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: November 14, 1989
    Assignee: Kyowa Hakko Kogyo Kabushiki Kaisha
    Inventors: Masaji Kasai, Yutaka Kanda, Motomichi Kono, Yutaka Saito, Makoto Morimoto, Tadashi Ashizawa
  • Patent number: 4874779
    Abstract: Disclosed herein are N.sup.7 -alkylphosphate derivatives of mitomycin C and porfiromycin showing antitumor activity against transplanted human tumor and reduced toxicity relative to the parent N.sup.7 -alkanol mitomycin compounds.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: October 17, 1989
    Assignee: Bristol-Myers Company
    Inventor: Peter D. Senter
  • Patent number: 4866180
    Abstract: This invention refers to 7-amino mitosane analogs (mitomycin C) in which the 7-amino group bears an organic substituent incorporating a disulfide group and to a novel thiol exchange process for producing these compounds. The compounds are inhibitors of experimental animal tumors.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: September 12, 1989
    Assignee: Bristol-Myers Company
    Inventors: Dolatrai M. Vyas, Yulin Chiang, Terrence W. Doyle
  • Patent number: 4863935
    Abstract: Mitomycin derivatives having potent anti-tumor activity against solid sarcoma 180 tumors and lymphocytic leukemia P-388 tumors.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: September 5, 1989
    Assignee: Kyowa Hakko Kogyo K.K.
    Inventors: Yasushi Shida, Tokuyuki Kuroda, Ikuo Matsukuma, Makoto Morimoto, Tadashi Ashizawa
  • Patent number: 4853385
    Abstract: 7-N,8-N-Ethylenemitomycin 8-imines represented by the formula ##STR1## wherein one of the R.sub.1 and R.sub.2 represents carbamoyloxymethyl and another represents hydrogen or both are combined together to form methylene; R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each independently represent hydrogen or C.sub.1-4 alkyl, or R.sub.3 and R.sub.4 may be combined together to represent --(CH.sub.2).sub.n --, wherein n is 3 or 4; and Y and Z represent hydrogen or methyl, provided that when R.sub.1 represents carbamoyloxymethyl and Y represents methyl, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6 and Z are not hydrogen simultaneously, has an excellent antitumor activity.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: August 1, 1989
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yutaka Saito, Masaji Kasai, Kunikatsu Shirahata, Motomichi Kono, Makoto Morimoto, Tadashi Ashizawa
  • Patent number: 4820824
    Abstract: Mitomycin compound having potent antitumour activity having the formula: ##STR1## wherein ##STR2## (wherein Ra, Rb and Rc each independently represent lower alkyl, cycloalkyl having 3-7 carbon atoms or phenyl; or Ra and Rb are bonded together to form a poly-methylene group having 2-5 carbon atoms);one of R.sub.1 and R.sub.2 represents carbamoyloxymethyl and the other represents hydrogen; or R.sub.1 and R.sub.2 may together form an exocyclic methylene group;and Y and Z each independently represents hydrogen or methyl.
    Type: Grant
    Filed: August 19, 1987
    Date of Patent: April 11, 1989
    Assignee: Kyowa Hakko Kogyo Kabushiki Kaisha
    Inventors: Motomichi Kono, Masaji Kasai, Yutaka Saito, Makoto Morimoto, Tadashi Ashizawa
  • Patent number: 4814445
    Abstract: The present invention provides novel mitomycin analogs containing a disulfide group and processes for the preparation thereof. These compounds are mitomycin A analogs in which the 7-alkoxy group bears an organic substituent incorporating a disulfide group. Mitomycin A is an antibiotic of established utility, and the 7-O-substituted mitosane analogs thereof have similar utility.
    Type: Grant
    Filed: February 25, 1988
    Date of Patent: March 21, 1989
    Assignee: Bristol-Myers Company
    Inventors: Dolatrai M. Vyas, Terrence W. Doyle, Richard A. Partyka
  • Patent number: 4803212
    Abstract: The present invention refers to mitomycin analogs containing a disulfide group. These compounds are mitromycin C derivatives in which the 7-amino group bears an organic substituent incorporating a disulfide group. The compounds are inhibitors of experimental animal tumors.
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: February 7, 1989
    Assignee: Bristol-Myers Company
    Inventors: Dolatrai M. Vyas, Yulin Chiang, Terrence W. Doyle
  • Patent number: 4791130
    Abstract: Mitomycin derivatives having potent antitumour activity have the formula: ##STR1## wherein R represents lower alkyl, cycloalkyl or unsubstituted or substituted aralkyl;X represents hydrogen or carbamoyl;Y and Z each independently represents hydrogen or methyl;and represents an .alpha. or .beta. bond.
    Type: Grant
    Filed: April 15, 1987
    Date of Patent: December 13, 1988
    Assignee: Kyowa Hakko Kogyo Kabushiki Kaisha
    Inventors: Tokuyuki Kuroda, Koji Hisamura, Tohru Sugaya, Yutaka Ohsawa, Hideo Ueno, Makoto Morimoto, Tadashi Ashizawa
  • Patent number: 4791113
    Abstract: Mitomycin derivatives having potent antitumor activity having the formula: ##STR1## wherein A is ON--or R.sub.4 N.dbd.N--[wherein R.sub.4 is selected from ##STR2## and optionally substituted heterocyclic groups (wherein R.sub.5 and R.sub.8 are each independently selected from hydrogen, lower alkyl and lower cycloalkyl; R.sub.6 is selected from hydrogen, halogen, hydroxy, lower alkoxy, amino and nitro; R.sub.7 is selected from lower alkyl and lower cycloalkyl; and X is selected from oxygen, sulphur and imino)];R.sub.1 and R.sub.2 are each independently selected from hydrogen, lower alkyl, lower cycloalkyl, optionally substituted aralkyl, optionally substituted alkanoyl, optionally substituted arylcarbonyl, optionally substituted alkanesulfonyl, arylsulfonyl and aralkylsulfonyl;R.sub.3 is hydrogen or carbamoyl;Y is hydrogen or methyl;Z is selected from hydrogen, methyl and acetyl;and is an .alpha. or .beta. bond.
    Type: Grant
    Filed: May 12, 1987
    Date of Patent: December 13, 1988
    Assignee: Kyowa Hakko Kogyo Kabushiki Kaisha
    Inventors: Tokuyuki Kuroda, Koji Hisamura, Tohru Sugaya, Yutaka Ohsawa, Hideo Ueno, Makoto Morimoto, Tadashi Ashizawa
  • Patent number: 4771068
    Abstract: Mitomycin derivatives of the formula: ##STR1## wherein X is ##STR2## [wherein R.sub.3 is alkyl, cycloalkyl or optionally substituted phenyl; and R.sub.4 is alkyl or cycloalkyl]; n is an integer of 2 to 8; one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a carbamoyloxymethyl group, or alternatively R.sub.1 and R.sub.2 may be combined together to form a methylene group (.dbd.CH.sub.2); and Y and Z independently represent hydrogen or methyl;exhibit anti-bacterial and anti-tumor activities.
    Type: Grant
    Filed: April 10, 1986
    Date of Patent: September 13, 1988
    Assignee: Kyowa Hakko Kogyo Kabushiki Kaisha
    Inventors: Masaji Kasai, Yutaka Saito, Motomichi Kono, Akira Sato, Hiroshi Sano, Kunikatsu Shirahata, Makoto Morimoto, Tadashi Ashizawa
  • Patent number: 4748251
    Abstract: Mitomycin derivatives represented by the formula (I): ##STR1## wherein R.sub.1 and R.sub.2 may be the same or different, and represent a hydrogen atom or a lower alkyl group; R.sub.3 and R.sub.4 mean that when R.sub.3 is a hydrogen atom, R.sub.4 represents --CH.sub.2 OCONH.sub.2 or ##STR2## (wherein R.sub.1 and R.sub.2 have the same significances as defined above), or R.sub.3 and R.sub.4 are combined to form .dbd.CH.sub.2 ; Y and Z may be the same or different, and represent a hydrogen atom or a methyl group; represents .alpha.- or .beta.-bond, provided that Y represents a hydrogen atom when R.sub.4 takes .beta.-configuration, have an excellent anti-tumor activity.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: May 31, 1988
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kunikatsu Shirahata, Motomichi Kono, Masaji Kasai, Makoto Morimoto, Tadashi Ashizawa
  • Patent number: 4746746
    Abstract: Novel methods for treatment of neoplastic disease states in animals, which methods comprise administering a therapeutically effective amount of a compound of the formula IIIa, ##STR1## wherein: Y is hydrogen or lower alkyl; and Z is an hydroxy substitited 1-pyrrolidinyl radical, ora lower alkyl substituted piperidyl radical, ora 1-piperazinyl radical or an acetamino, acetyl, carbamido, cyano, carboxy lower alkylamino, di-lower alkoxy, nitro, sulfamyl, or lower alkyl substituted anilino radical, ora radical of the formula, ##STR2## wherein R is hydrogen or lower alkyl and R.sup.1 is a nitrogen containing heterocyclic radical selected from the group consisting of amino substituted triazolyl, lower alkyl substituted isothiazolyl, benzothiazolyl, and nitro and halo substituted derivatives of benzothiazolyl, or R.sup.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: May 24, 1988
    Assignee: University Patents, Inc.
    Inventor: William A. Remers
  • Patent number: 4720543
    Abstract: This invention discloses 1a- and 7-substituted derivatives of mitosanes containing thiocarbamoyl and glycosyl residues. The compounds possess antibacterial and antitumor activity, with a concomitant reduction in bone marrow toxicity as compared to the parent compounds.
    Type: Grant
    Filed: June 6, 1985
    Date of Patent: January 19, 1988
    Assignee: Georgetown University
    Inventors: Eugene McPherson, Philip S. Schein
  • Patent number: 4691023
    Abstract: The present invention refers to mitomycin analogs containing a disulfide group. These compounds are mitomycin C derivatives in which the 7-amino group bears an organic substituent incorporating a disulfide group. The compounds are inhibitors of experimental animal tumors.
    Type: Grant
    Filed: August 7, 1986
    Date of Patent: September 1, 1987
    Assignee: Bristol-Myers Company
    Inventors: Dolatrai M. Vyas, Yulin Chiang, Terrence W. Doyle