Patents by Inventor Wolfhard Engel

Wolfhard Engel 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).

  • Patent number: 4668674
    Abstract: There are described (+)-6-chloro-5,10-dihydro-5-[(1-methyl-4-piperidinyl)-acetyl]-11H-dibenzo [b,e][1,4]diazepin-11-one, the isolation thereof from a mixture of enantiomers and its use as a pharmaceutical material.The compound is characterized by a powerful activity against ulcers of the gastro-intestinal tract.
    Type: Grant
    Filed: August 19, 1986
    Date of Patent: May 26, 1987
    Assignee: Dr. Karl Thomae GmbH
    Inventors: G/u/ nter Trummlitz, Wolfhard Engel, Wolfgang Eberlein, Gerhard Mihm, Antonio Giachetti
  • Patent number: 4626325
    Abstract: The specification describes a process for preparing 4-hydroxy-1,2-benzisothiazol-3(2H)-one-1,1-dioxide, a sweetener, from 1,2-benzisothiazol-3(2H)-one-1,1-dioxide by anodic oxidation in the presence of trifluoroacetic acid or trifluoromethanesulfonic acid and, optionally, in the presence of salts which increase the conductivity. The oxidation is effected in an anhydrous medium and the 4-trifluoroacetoxy-1,2-benzisothiazol-3(2H)-one-1,1-dioxide formed as an intermediate when, for example, trifluoroacetic acid is used is decomposed with water to obtain the desired end product.
    Type: Grant
    Filed: March 19, 1986
    Date of Patent: December 2, 1986
    Assignee: Karl Thomae GmbH
    Inventors: Gunter Trummlitz, Wolfgang Eberlein, Wolfhard Engel, Gerhard Mihm
  • Patent number: 4567178
    Abstract: The invention relates to novel substituted 5,11-dihydro-6H-dibenz[b,e]azepin-6-one of the formula ##STR1## wherein A represents a (1-methyl-4-piperidinyl)-acetyl, (4-methyl-1-piperazinyl)-acetyl, or [(1-methyl-4-piperidinyl)-amino]-carbonyl group,and the acid addition salts thereof, which have valuable pharmacological properties, particularly an ulcer-inhibiting and secretion-inhibiting activity. The compounds of Formula I may be prepared using methods conventionally used for analogous compounds.
    Type: Grant
    Filed: January 7, 1985
    Date of Patent: January 28, 1986
    Assignee: Dr. Karl Thomae GmbH
    Inventors: Wolfgang Eberlein, Gunter Trummlitz, Wolfhard Engel, Gunther Schmidt, Rudolf Hammer, Antonio Giachetti
  • Patent number: 4550107
    Abstract: Disclosed are novel condensed diazepinones of formula I ##STR1## wherein B is a fused ring selected from ##STR2## X is --CH-- or, when B is ortho-phenylene, X can also be nitrogen; A.sub.1 is C.sub.1 -C.sub.2 alkylene; A.sub.2 is C.sub.1 -C.sub.2 when it is in the 2-position relative to the saturated heterocyclic ring nitrogen or a single bond or methylene when it is in the 3- or 4-position; R.sub.1 is C.sub.1 -C.sub.3 alkyl; R.sub.2 is C.sub.1 -C.sub.7 alkyl, optionally hydroxy-substituted on at least one of its second to seventh carbon, or C.sub.3 -C.sub.7 cycloalkyl, optionally hydroxy substituted, or C.sub.3 -C.sub.7 cycloalkylmethyl; or R.sub.1 and R.sub.2 can, together with the nitrogen therebetween, be a 4- to 7-membered saturated monocyclic, heterocyclic ring which can optionally include an oxygen or N--CH.sub.3 ; R.sub.3 is hydrogen, chlorine, or methyl; R.sub.4 is hydrogen or C.sub.1 -C.sub.4 alkyl, R.sub.5 is hydrogen, chlorine or C.sub.1 -C.sub.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: October 29, 1985
    Assignee: Dr. Karl Thomae GmbH
    Inventors: Wolfhard Engel, Gunter Trummlitz, Wolfgang Eberlein, Gerhard Mihm, Gunther Schmidt, Rudolf Hammer, Antonio Giachetti
  • Patent number: 4536402
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is phenyl, halo- and/or methyl-substituted phenyl or pyridinyl;R.sub.2 is hydrogen, straight or branched alkyl of 1 to 4 carbon atoms, 2- or 3-hydroxy-(alkyl of 2 to 3 carbon atoms) or 2- or 3-dimethylamino-(alkyl of 2 to 3 carbon atoms);R.sub.3 is hydrogen or alkyl of 1 to 3 carbon atoms; andR.sub.4 is hydrogen, chlorine or methyl.The compounds are useful as anticonvulsants.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: August 20, 1985
    Assignee: Dr. Karl Thomae Gesellschaft mit beschranter Haftung
    Inventors: Wolfhard Engel, Eckhart Bauer, Gunter Trummlitz, Peter Danneberg, Joachim Kahling
  • Patent number: 4533664
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, methyl, methoxy, fluorine or chlorine; andR.sub.2 is hydrogen, methyl, ethyl or n-propyl;and non-toxic, pharmacologically acceptable salts thereof formed with an inorganic or organic base. The compounds as well as the salts are useful as antithrombotics.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: August 6, 1985
    Assignee: Dr. Karl Thomae Gesellschaft mit beschrankter Haftung
    Inventors: Gunter Trummlitz, Wolfhard Engel, Ernst Seeger, Walter Haarmann
  • Patent number: 4447434
    Abstract: The specification describes new substituted dibenzodiazepinones of formula ##STR1## wherein R.sub.1 is hydrogen or chlorine atom and R is (1-methyl-4-piperidinyl)methyl, (1-methyl-1,2,5,6-tetrahydro-4-pyridinyl)methyl,1-methyl-1,2,5,6-tetrahydr o-4-pyridinyl, (1-methyl-4-piperidinylidene)methyl,(2,3-dehydro-8-methyl-8-aza-bicyclo[3, 2,1]oct-3-yl)-methyl, (8-methyl-8-aza-bicyclo[3,2,1]oct-3-ylidene)-methyl or an endo-or exo-(8-methyl-8-azabicyclo[3,2,1]oct-3-yl)methyl each being optionally substituted by one or two methyls on the heterocyclic ring, and the nontoxic, pharmaceutically acceptable acid addition salts thereof, processes for preparing them and pharmaceutical compositions containing these compounds.The compounds of formula I have an antiulcerative effect and an inhibitory effect on the secretion of gastric substances having anticholinergic activity, such as dryness of the mouth and mydriasis.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: May 8, 1984
    Assignee: Dr. Karl Thomae GmbH
    Inventors: Gunter Trummlitz, Wolfhard Engel, Wolfgang Eberlein, Gunther Schmidt, Rudolf Hammer, Piero del Soldato
  • Patent number: 4443452
    Abstract: This invention relates to compounds of the formula ##STR1## wherein X is oxygen, --NH--, or--NCH.sub.3 --andR is 1-methyl-4-piperidinyl, 4-methyl-1-piperazinyl, endo-8-methyl-8-azabicyclo[3.2.1]oct-3-yl, or exo-8-methyl-8-acabicyclo[3.2.1]oct-3-yl, each of which may optionally have an additional methyl substitutent,a diastereomer or enantiomer thereof, or a non-toxic, pharmacologically acceptable acid addition salt thereof with an inorganic or organic acid.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: April 17, 1984
    Assignee: Dr. Karl Thomae GmbH
    Inventors: Wolfhard Engel, Gunter Trummlitz, Gunther Schmidt, Wolfgang Eberlein, Rudolf Hammer, Piero del Soldato
  • Patent number: 4430355
    Abstract: Compounds of the formula ##STR1## wherein X is oxygen or sulfur;R.sub.1 is hydrogen, methyl or ethyl; andR.sub.2 is methyl or ethyl;and non-toxic, physiologically acceptable salts thereof formed with an inorganic or organic base. The compounds as well as their salts are useful as sweetening agents.
    Type: Grant
    Filed: August 27, 1981
    Date of Patent: February 7, 1984
    Assignee: Dr. Karl Thomae Gesellschaft mit beschrankter Haftung
    Inventors: Gunter Trummlitz, Ernst Seeger, Wolfhard Engel
  • Patent number: 4424226
    Abstract: This invention relates to compounds of the formula ##STR1## wherein R is (1-methyl-4-piperidinyl)methyl, (1-methyl-1,2,5,6-tetrahydro-4-pyridinyl)methyl, 1-methyl-1,2,5,6-tetrahydro-4-pyridinyl, (1-methyl-4-piperidinylidene)methyl, 2,3-dehydro-8-methyl-8-azabicyclo?3.2.1!oct-3-yl methyl, endo-8-methyl-8-azabicyclo?3.2.1!oct-3-yl-methyl, or exo-8-methyl-8-azabicyclo?3.2.1!oct-3-yl-methyl, each of which may optionally have one or two methyl substituents on the six-membered heterocyclic ring, and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as their salts are useful as anti-ulcerogenics.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: January 3, 1984
    Assignee: Dr. Karl Thomae GmbH
    Inventors: Wolfgang Eberlein, Gu/ nter Trummlitz, Gu/ nther Schmidt, Wolfhard Engel, Rudolf Hammer, Piero Del Soldato
  • Patent number: 4424225
    Abstract: This invention relates to novel compounds of the formula ##STR1## wherein R.sub.1 is hydrogen or alkyl having from 1 to 4 carbon atoms;R.sub.2 is halogen, hydrogen, or alkyl having from 1 to 4 carbon atoms; andR is (1-methyl-4-piperidinyl)methyl, (1-methyl-1,2,5,6-tetrahydro-4-pyridinyl)methyl, 1-methyl-1,2,5,6-tetrahydro-4-pyridinyl, (1-methyl-4-piperidinylidene)-methyl, or (8-methyl-8-azabicyclo?3.2.1!oct-3-yl)-methyl, each of which can optionally have an additional methyl substituent on the heterocyclic ring,and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as their salts are useful as anti-ulcerogenics.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: January 3, 1984
    Assignee: Dr. Karl Thomae GmbH
    Inventors: Gu/ nther Schmidt, Wolfgang Eberlein, Wolfhard Engel, Gu/ nter Trummlitz, Rudolf Hammer, Piero Del Soldato
  • Patent number: 4424222
    Abstract: New pyridobenzodiazepinones of the formula ##STR1## are described wherein X represents oxygen, --NH-- or --NCH.sub.3 -- and R represents 1-methyl-4-piperidinyl or 4-methyl-1-piperazinyl group optionally substituted by a methyl group, or a 3.alpha.- or 3.beta.-tropanyl group, and the nontoxic pharmaceutically acceptable acid addition salts thereof. The specification also describes processes for preparing these compounds, pharmaceutical compositions containing these compounds and new intermediate products used in preparing them.The compounds of formula I have antiulcerative effects and an inhibitory effect on gastric acid secretion, without the side effects such as dryness of the mouth and mydriasis which occur with other substances having an anticholinergic activity.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: January 3, 1984
    Assignee: Karl Thomae GmbH
    Inventors: Wolfhard Engel, Gu/ nther Schmidt, Gu/ nther Trummlitz, Wolfgang Eberlein, Rudolf Hammer, Piero D. Soldato
  • Patent number: 4410527
    Abstract: Compounds of the formula ##STR1## wherein R is 1-methyl-4-piperididinyl, 4-methyl-1-piperazinyl, or 3 - or 3 -tropanyl, each of which may optionally have another methyl substituent attached to the heterocyclic ring;R.sub.1 is hydrogen or alkyl of 1 to 4 carbon atoms;R.sub.2 is hydrogen, halogen or alkyl of 1 to 4 carbon atoms; andX is oxygen, --NH-- or --N(CH.sub.3)--;and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as their salts are useful as anti-ulcerogenics.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: October 18, 1983
    Assignee: Dr. Karl Thomae Gesellschaft mit beschrankter Haftung
    Inventors: Wolfhard Engel, Gunther Schmidt, Wolfgang Eberlein, Gunter Trummlitz, Rudolf Hammer, Piero Del Soldato
  • Patent number: 4404230
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen or hydroxyl, and non-toxic, pharmacologically acceptable salts thereof formed with inorganic or organic bases. The compounds as well as their salts are useful as sweetening agents.
    Type: Grant
    Filed: April 15, 1981
    Date of Patent: September 13, 1983
    Assignee: Dr. Karl Thomae GmbH
    Inventors: Gunter Trummlitz, Wolfgang Eberlein, Wolfhard Engel, Gunther Schmidt
  • Patent number: 4381303
    Abstract: This invention is directed to the compounds of the formula ##STR1## wherein R.sub.1 is hydrogen or an alkyl of from 1 to 6 carbon atoms;R.sub.2 is an alkyl of from 1 to 3 carbon atoms;R.sub.3 is hydrogen or an alkyl of from 1 to 3 carbon atoms; andR.sub.4 is hydrogen or an alkyl of from 1 to 4 carbon atoms.These compounds are useful in pharmaceutical compositions which serve as analgesics, antiphlogistics and antipyretics.
    Type: Grant
    Filed: May 13, 1982
    Date of Patent: April 26, 1983
    Assignee: Dr. Karl Thomae GmbH
    Inventors: Gunther Schmidt, Wolfhard Engel, Wolfgang Eberlein, Gunter Trummlitz, Gunther Engelhardt
  • Patent number: 4353919
    Abstract: Analgesic and antipyretic pharmaceutical dosage unit compositions containing as an active ingredient a compound of the formula ##STR1## wherein R.sub.5 is methyl or methoxy, and R.sub.4, R.sub.6 and R.sub.7 are hydrogen; orR.sub.6 is fluorine or chlorine, and R.sub.4, R.sub.5 and R.sub.7 are hydrogen; orR.sub.7 is chlorine, and R.sub.4, R.sub.5 and R.sub.6 are hydrogen; orR.sub.5 and R.sub.6 are methoxy, and R.sub.4 and R.sub.7 are hydrogen; orR.sub.4 is methyl or chlorine, and R.sub.5, R.sub.6 and R.sub.7 are hydrogen;and methods of using said compounds as analgesics and antipyretics.
    Type: Grant
    Filed: April 15, 1981
    Date of Patent: October 12, 1982
    Assignee: Dr. Karl Thomae Gesellschaft mit beschrankter Haftung
    Inventors: Wolfhard Engel, Gunter Trummlitz, Wolfgang Eberlein, Gunther Schmidt, Gunther Engelhardt, Rainer Zimmermann
  • Patent number: 4328235
    Abstract: There are described pharmaceutical compositions containing as active substances benzothiazol-2(3H)-ones of the general formula ##STR1## wherein R represents a hydrogen atom or a methyl, methoxy, or ethoxy group. The pharmaceutical compositions serve as analgesics and antipyretics and possess little or no methemoglobin-forming activity.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: May 4, 1982
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Gunter Trummlitz, Wolfhard Engel, Gunther Schmidt, Wolfgang Eberlein, Ernst Seeger, Gunther Engelhardt, Rainer Zimmermann
  • Patent number: 4288437
    Abstract: Compounds of the formula ##STR1## wherein Ar is phenyl; mono- or di-substituted phenyl, where the substituents are one to two halogens, one to two alkyls of 1 to 3 carbon atoms, or one amino, nitro, cyano or trifluoromethyl; or pyridinyl;R is hydrogen, chlorine, methyl or methoxy;R.sub.1 is hydrogen or methyl;R.sub.2 is hydrogen, alkyl of 1 to 6 carbon atoms, alkenyl of 2 to 6 carbon atoms, alkynyl of 2 to 6 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, methyl-(cycloalkyl of 3 to 8 carbon atoms) or --A--R.sub.4,where A is alkylene of 2 to 3 carbon atoms, and R.sub.4 is hydroxyl, methylamino, dimethylamino, N-methyl-ethylamino, diethylamino, pyrrolidino, piperidino, hexamethyleneimino, morpholino or 4-methyl-1-piperazinyl; orR.sub.1 and R.sub.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: September 8, 1981
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Wolfhard Engel, Gunter Trummlitz, Ernst Seeger, Joachim Kahling
  • Patent number: 4259336
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, halogen or alkyl of 1 to 3 carbon atoms; R.sub.2 is hydrogen or alkyl of 1 to 3 carbon atoms; andR.sub.3 is aromatic hydrocarbyl of 6 to 10 carbon atoms or an aromatic heterocycle of 2 to 9 carbon atoms and 1 to 2 nitrogen atoms and/or an oxygen or a sulfur atom, where each of said aromatic substituents may in turn be substituted with one or two alkyls of 1 to 6 carbon atoms, halogen, hydroxyl, trifluoromethyl, halophenyl or alkoxy of 1 to 3 carbon atoms;and non-toxic, pharmacologically acceptable salts thereof formed with inorganic or organic bases; the compounds as well as their salts are useful as analgesics, antipyretics, antithrombotic and antiphlogistics.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: March 31, 1981
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Wolfhard Engel, Gunter Trummlitz, Ernst Seeger, Walter Haarmann, Gunther Engelhardt, Rainer Zimmermann
  • Patent number: 4233333
    Abstract: Compounds of the formula ##STR1## wherein X is oxygen or sulfur;R.sub.1 is hydrogen, methyl or ethyl; andR.sub.2 is methyl or ethyl;and non-toxic, physiologically acceptable salts thereof formed with an inorganic or organic base. The compounds as well as their salts are useful as sweetening agents.
    Type: Grant
    Filed: October 20, 1978
    Date of Patent: November 11, 1980
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Gunter Trummlitz, Ernst Seeger, Wolfhard Engel