Patents by Inventor Hans-Willi Krell

Hans-Willi Krell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20020187991
    Abstract: Derivatives of 5,5-disubstituted pyrimidine-2,4,6-trianones are disclosed. These compounds have antitumor and antimetastatic activity.
    Type: Application
    Filed: February 25, 2002
    Publication date: December 12, 2002
    Inventors: Dagmar Geppert, Frank Grams, Hans-Willi Krell, Herbert Leinert, Ernesto Menta, Gerd Zimmermann
  • Patent number: 6472396
    Abstract: Compounds of formula I, useful as matrix metalloprotease inhibitors, wherein X, Y and Z are each oxygen; R1 is selected from the group consisting of (a) n-octyl, (b) n-decyl, (c) biphenyl and (d) (4-phenoxy)phenyl, wherein the terminal monocycle for moieties (c)-(d) is unsubstituted or substituted by a substituent selected from the group consisting of —NH2, —NO2, —SO2NH2, —SO2CH3, acetyl, hydroxy, methoxy, ethoxy, cyano and halogen; R2 and R3 are each hydrogen; and R4 and R5, together with the nitrogen atom to which they are bound, form a piperazinyl or piperidyl ring, wherein the piperazinyl ring is substituted in the 4-position with a substituent selected from the group consisting of (a) a 6-membered aromatic monocycle having 0, 1 or 2 nitrogen atoms and the remainder of the atoms in the monocycle being carbon and (b) hydroxy-C1-C6 alkyl, wherein the monocycle is unsubstituted or substituted by a substituent selected from the group consisting of halogen, —
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: October 29, 2002
    Assignee: Roche Diagnostics GmbH
    Inventors: Elmar Bosies, Angelika Esswein, Frank Grams, Hans-Willi Krell, Ernesto Menta
  • Publication number: 20020037901
    Abstract: 5-Arylidene-4-oxo-2-thioxo-3-thiazolidinecarboxylic acids of formula I 1
    Type: Application
    Filed: January 23, 2001
    Publication date: March 28, 2002
    Inventors: Walter-Gunar Friebe, Hans-Willi Krell, Sabine Woelle, Hans-Peter Wolff
  • Publication number: 20020026034
    Abstract: 1 The present invention ocncerns new amidinopyrroline derivatives of formula (I) with the meanings of the symbols as given in the description as well as a process for their production and their use in pharmaceutical preparations.
    Type: Application
    Filed: June 8, 1998
    Publication date: February 28, 2002
    Inventors: RICHARD ENGH, SILVIA KONETSCHNY-RAPP, HANS-WILLI KRELL, MARTIN ULRICH, CHRISTOS TSAKLAKIDIS
  • Patent number: 6335332
    Abstract: The invention is directed to barbituric acid derivatives having inhibitory activity for matrix maetalloproteases comprised of formula (I): pharmaceutical compositions thereof, processes for preparing the derivatives, and methods for treating diseases associated with elevated or uncontrolled levels of matrix metalloprotease activity, e.g., cancer, specifically tumor progression and tumor metastasis, inflammation, or as a method of contraception.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: January 1, 2002
    Assignee: Roche Diagnostics GmbH
    Inventors: Ambrogio Oliva, Gianpiero De Cillis, Frank Grams, Valeria Livi, Gerd Zimmermann, Ernesto Menta, Hans-Willi Krell
  • Patent number: 6307051
    Abstract: New compounds of formula I wherein: R and R1 are independently selected from hydrogen, (C1-C6)alkyl, styryl and (C3-C6)cycloalkyl or, taken together with the carbon to which they are linked, form a (C3-C6)cycloalkyl group; A is selected from the following groups: —CH2C≡CCH2—, or —(CH2)q—NH—(CH2)q—, wherein q is an integer from 2 to 3 B is selected from T is selected from —CH2—C≡CH, —C≡CH, —(CH2)p—R3, —CH═CH—R3, —CH2—NHCO—R3, —(CH2)p—O—R3, —CH(NH2)—CH2R3, in which p is 0 or an integer from 1 to 4, R3 is a carbocyclic or heterocyclic ring as medicaments having antitumor and/or antimetastatic activities.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: October 23, 2001
    Assignee: Roche Diagnostics GmbH
    Inventors: Walter-Gunar Friebe, Bernhard Koenig, Hans-Willi Krell, Sabine Woelle
  • Patent number: 6110924
    Abstract: Compounds of formula I, useful as matrix metalloprotease inhibitors, ##STR1## wherein X, Y and Z are each oxygen;R.sub.1 is selected from the group consisting of (a) n-octyl, (b) n-decyl, (c) biphenyl and (d) (4-phenoxy)phenyl, wherein the terminal monocycle for moieties (c)-(d) is unsubstituted or substituted by a substituent selected from the group consisting of --NH.sub.2, --NO.sub.2, --SO.sub.2 NH.sub.2, --SO.sub.2 CH.sub.3, acetyl, hydroxy, methoxy, ethoxy, cyano and halogen;R.sub.2 and R.sub.3 are each hydrogen; andR.sub.4 and R.sub.5, together with the nitrogen atom to which they are bound, form a piperazinyl or piperidyl ring, wherein the piperazinyl ring is substituted in the 4-position with a substituent selected from the group consisting of (a) a 6-membered aromatic monocycle having 0, 1 or 2 nitrogen atoms and the remainder of the atoms in the monocycle being carbon and (b) hydroxy-C.sub.1 -C.sub.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: August 29, 2000
    Assignee: Roche Diagnostics GmbH
    Inventors: Elmar Bosies, Angelika Esswein, Frank Grams, Hans-Willi Krell, Ernesto Menta
  • Patent number: 6069150
    Abstract: The present invention concerns the use of beta-carboline derivatives of formula I bearing at least a free or esterified carboxylic group on the piperidine ring, for the preparation of pharmaceutical compositions having antimetastatic properties.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: May 30, 2000
    Assignee: F. Hoffman-La Roche AG
    Inventors: Silvano Spinelli, Ernesto Menta, Hans-Willi Krell
  • Patent number: 5856309
    Abstract: Compound of formula (I) are disclosed ##STR1## as well as optically active isomers or pharmacologically acceptable salts thereof. The compounds are useful active ingredients in pharmaceutical compositions, and methods of treating osteoporosis, inflammation or diseases which are due to thromboembolic events. Compounds of formula (II) are also disclosed ##STR2## which are useful as starting compounds for preparing compounds of formula (I).
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: January 5, 1999
    Assignee: Boehringer Mannheim GmbH
    Inventors: Silvia Konetschny-Rapp, Hans-Willi Krell, Ulrich Martin, Richard Engh, Christos Tsaklakidis
  • Patent number: 5665575
    Abstract: The invention concerns a microbial esterase which enantioselectively cleaves (S)-1-phenylethyl acetate and is obtainable from Arthrobacter spec. (DSM 7034), Pseudomonas fluorescens (DSM 7033) or Bacillus subtilis (DSM 7035) as well as a process for enantioselectively cleaving a 1-arylalkyl ester of a carboxylic acid and a process for the production of an enantiomerically-pure 1-arylalkanol using this esterase.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: September 9, 1997
    Assignee: Boehringer Mannheim GmbH
    Inventors: Hans-Willi Krell, Peter Rasor
  • Patent number: 5624811
    Abstract: Enzyme specific for bilirubin which has a phenol oxidase activity of less than 0.5% and an activity for biliverdin of less than 10%, a broad pH optimum as well as a good thermostability. The enzyme is obtainable from plants such as alfalfa and is suitable for the determination as well as for the degradation of bilirubin in particular in biological liquids.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: April 29, 1997
    Assignee: Boehringer Mannheim GmbH
    Inventors: Gunter Lang, Ingo Bohn, Hans-Willi Krell
  • Patent number: 5622858
    Abstract: The invention concerns a microbial esterase which enantioselectively cleaves (S)-1-phenylethyl acetate and is obtainable from Arthrobacter spec. (DSM 7034), Pseudomonas fluorescens (DSM 7033) or Bacillus subtilis (DSM 7035) as well as a process for enantioselectively cleaving a 1-arylalkyl ester of a carboxylic acid and a process for the production of an enantiomerically-pure 1-arylalkanol using this esterase.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: April 22, 1997
    Assignee: Boehringer Mannheim GmbH
    Inventors: Hans-Willi Krell, Peter Rasor