Patents by Inventor Herbert Leinert

Herbert Leinert 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: 4780474
    Abstract: The present invention is concerned with the use of compounds of the general formula: ##STR1## wherein A is an optionally substituted phenyl or heteroaromatic radical, R.sub.6 and R.sub.7 are hydrogen or lower alkyl, X is an alkylene chain containing up to 6 carbon atoms, Y is a valency bond or a >C.dbd.O group and B is an optionally substituted phenyl or heteroaromatic radical, as well as of their pharmacologically acceptable salts for the treatment of blood flow disturbances. The present invention also provides pharmaceutical compositions which contain these compounds.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: October 25, 1988
    Assignee: Boehringer Mannheim GmbH
    Inventors: Erwin Bohm, Jens-Peter Holck, Wolfgang Kampe, Herbert Leinert, Bernd Muller-Beckmann, Klaus Strein
  • Patent number: 4697022
    Abstract: A process for the preparation of S- or R-carbazole derivatives of the general formula: ##STR1## in which R is an unsubstituted or substituted amino radical and pharmacologically acceptable salts, by either reacting R-(-)-epichlorohydrin (for the S-carbazole derivative); or reacting an S-epoxide derivative of the general formula: ##STR2## in which R.sub.1 is the residue of a substituted sulphonic acid derivative (for the R-carbazole derivative); with 4-hydroxycarbazole and then with ammonia or a substituted amine of the general formula RH, and recovering the compound or converting it to a pharmacologically acceptable salt.The new R-(+)- and S(-)-carbazole derivatives provided by the inventive process have unexpected beta blocking and vasodilatory properties and are useful in pharmaceutical compositions. R-(+)-carbazole derivatives are also useful for the treatment of glaucoma.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: September 29, 1987
    Assignee: Boehringer Mannheim GmbH
    Inventor: Herbert Leinert
  • Patent number: 4612313
    Abstract: The present invention provides phenylacetonitrile derivatives of the general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5, which can be the same or different, are hydrogen or haolgen atoms or alkyl, alkoxy, nitro, amino or acylamino radicals and two adjacent substituents can together also form a methylenedioxy or ethylenedioxy radical, A is a radical of the general formula: ##STR2## in which R.sub.6 is a straight-chained, cyclic or branched, saturated or unsaturated alkyl radical containing 2 to 12 carbon atoms, R.sub.
    Type: Grant
    Filed: September 10, 1985
    Date of Patent: September 16, 1986
    Assignee: Boehringer Mannheim GmbH
    Inventors: Herbert Leinert, Wolfgang Kampe, Klaus Strein, Bernd Muller-Beckmann, Wolfgang Bartsch
  • Patent number: 3976779
    Abstract: New 1,2,3,4-tetra-hydrocarbazole derivatives of the formula: ##SPC1##Wherein R.sup.1 is straight-chained or branched alkyl, and the pharmacologically compatible salts thereof, are markedly effective as inhibitors of adrogenic .beta.-receptors and thus useful for the treatment and prophylaxis of cardiac and circulatory diseases.
    Type: Grant
    Filed: April 16, 1975
    Date of Patent: August 24, 1976
    Assignee: Boehringer Mannheim G.m.b.H.
    Inventors: Herbert Leinert, Alfred Popelak, Kurt Stach, Wolfgang Bartsch, Karl Dietmann