Patents by Inventor Roland Loser

Roland Loser 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: 5149865
    Abstract: The invention relates to p-oxibenzoic acid derivatives of the general formula (1) where: ##STR1## their diastereomers and enantiomers in pure form or as mixture of stereoisomeric forms and their physiologically compatible salts, a process for the preparation thereof and the use thereof for preparing drugs with hypolipemic effect.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: September 22, 1992
    Assignee: Klinge Pharma GmbH
    Inventors: Friedemann Reiter, Helmut Grill, Hans-Helmut Henschel, Michael Schliack, Klaus Seibel, Roland Loser, Gerhard Lang
  • Patent number: 5047431
    Abstract: Novel (E)-1-[4'-(2-alkylaminoethoxy)phenyl]-1- (3'-hydroxyphenyl)-2-phenylbut-1-enes of the general formula ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different, provided that, when R.sup.1 and R.sup.2 are the same, each of them is a methyl or ethyl radical, and when R.sup.1 and R.sup.2 are different, one of them is hydrogen and the other is a methyl or ethyl radical, and the therapeutically compatible salts thereof, have a marked anti-estrogenic effect and are suitable for treating hormone-dependent mammary tumors.The compounds can be prepared by dehydrating carbinols of the general formula ##STR2## wherein R.sup.1 and R.sup.2 may be the same or different, provided that, when R.sup.1 and R.sup.2 are the same, each of them is a methyl or ethyl radical, and when R.sup.1 and R.sup.2 are different, one of them is a benzyl radical and the other is a methyl or ethyl radical; and wherein R.sup.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: September 10, 1991
    Assignee: Klinge Pharma GmbH & Co.
    Inventors: Helmut Schickaneder, Roland Loser, Helmut Grill
  • Patent number: 4778925
    Abstract: Para substituted benzoic acid derivatives of general formula (1) ##STR1## and their physiologically compatible salts, where R.sup.1 may be H, isopropyl, t-butyl p0 X may be ##STR2## and R.sup.2 may be --OH, --OR', where R' is a linear or branched, saturated or unsaturated C.sub.1 to C.sub.3 alkylmoiety, or a --NHCH.sub.2 COOH-- group, have hypolipedemic activity. They may be obtained by known methods either from the corresponding unsaturated ketones or from saturated hydroxycompounds, where the esterified benzoic acid moiety may be saponified or converted to a carboxymethylamide.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: October 18, 1988
    Assignee: Klinge Pharma GmbH
    Inventors: Helmut Grill, Friedemann Reiter, Michael Schliack, Roland Loser, Klaus Seibel
  • Patent number: 4764533
    Abstract: Erythro-1,2,3-triphenyl-1-pentanones of Formula 1 ##STR1## wherein R.sup.1 may be a dimethylamino, diethylamino, piperidin-1-yl- or pyrrolidin-1-yl group and R.sup.2 represents a hydrogen atom, a methoxy or hydroxy group, and their pharmacologically acceptable salts, have a pronounced antiestrogenic effect and are suitable for the treatment of hormone-dependent tumors.They may be prepared by reacting 1,2-diphenyl-ethanone of Formula 2 ##STR2## wherein R.sup.1 is as set forth in Formula 1 and R.sup.2 represents a hydrogen atom or a methoxy group, with sodium hydride in anhydrous dimethyl-formamide, isolating after conversion with 1-chloro-1-phenylpropane, the erythro form from the reaction product and possibly releasing the hydroxy group from the methoxy group by selective cleavage with hydrobromic acid.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: August 16, 1988
    Assignee: Klinge Pharma GmbH
    Inventors: Helmut Schickaneder, Roland Loser
  • Patent number: 4582857
    Abstract: P-oxybenzoic acid derivatives of formula (1) ##STR1## wherein R.sup.1 is hydrogen, or straight or branched alkyl of one to four carbon atoms;n is 1 or 2;X is ##STR2## and R.sup.2 is --OH or --NHCH.sub.2 COOH; and non-toxic pharmaceutically acceptable salts thereof.The compounds exhibit a hypolipemic effect. They may be prepared by methods known in themselves from the corresponding ester or acid halide compounds, wherein optionally the secondary alcohol group may be oxidized to a keto group.
    Type: Grant
    Filed: July 20, 1984
    Date of Patent: April 15, 1986
    Assignee: Klinge Pharma GmbH
    Inventors: Helmut Grill, Friedemann Reiter, Roland Loser, Michael Schliack, Klaus Seibel
  • Patent number: 4189594
    Abstract: Compounds of the formula ##STR1## wherein R.sup.1 is Cl, Br, CH(CH.sub.3).sub.2 or C(CH.sub.3).sub.3 ; A is a single bond, --CH.dbd.CH-- or --CH.sub.2 --CH.sub.2 --; and R.sup.2 is H, the cation of a pharmaceutically acceptable salt or an alkyl of up to three carbons, are strong hypolipaemic agents.
    Type: Grant
    Filed: August 1, 1978
    Date of Patent: February 19, 1980
    Assignee: Klingepharma GmbH & Co.
    Inventors: Helmut Grill, Roland Loser, Josef Wagner, Rainer H. Zschocke