Patents by Inventor Kunhard Pollow

Kunhard Pollow 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: 4945064
    Abstract: Estrane and androstane derivatives of formula I ##STR1## wherein X is bromine, iodine, triphenyltin or trialkyltin of 1 to 6 carbon atoms per alkyl radical,Y represents two hydrogen atoms or methylene,Z represents two hydrogen atoms, oxo or alkylenedioxy of 2 to 6 carbon atoms andV is ethylene, vinylene, 1,3-propylene or cyclopropylene,R.sub.1 is hydrogen or a hydrocarbon radical of up to 8 hydrocarbon atoms, optionally interrupted by an oxa group or substituted by an oxo group,R.sub.2 is methyl or ethyl,R.sub.3 and R.sub.4 represent a carbon-carbon bond or R.sub.3 is hydrogen and R.sub.4 is hydrogen or methyl,.DELTA.symbolizes a 4(5)-double bond if Z signifies two hydrogen atoms or an oxo group; or a 5(6)-double bond or, for the estrane derivatives of formula I, also a 5(10)-double bond, if Z is alkylenedioxy,are pharmacologically effective substances or intermediates for preparation thereof.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: July 31, 1990
    Assignee: Schering Aktiengesellschaft
    Inventors: Helmut Hofmeister, Henry Laurent, Paul E. Schulze, Klaus Annen, Rudolf Wiechert, Kunhard Pollow, Bernhard Manz, Hans-Joerg Grill
  • Patent number: 4904462
    Abstract: Novel, multiple-tritiated steroid-20,17-spirolactones of general Formula I ##STR1## wherein --A--B-- is --CH.sub.2 --CH.sub.2 --, --CH.dbd.CH-- or ##STR2## and --C--D-- is ##STR3## R is hydrogen or tritium and n is 0 or 1,are usable as tracer materials for the detection of mineralocorticoid receptors.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: February 27, 1990
    Assignee: Schering Aktiengesellschaft
    Inventors: Paul-Eberhard Schulze, Klaus Nickisch, Henry Laurent, Kunhard Pollow
  • Patent number: 4725426
    Abstract: 17.alpha.-bromo-.alpha. and 17.alpha.-iodo-vinyl-estrane derivatives of general formula I ##STR1## wherein X is a bromine or iodine atom in Z or E position,R.sup.1 is hydrogen, hydroxy or acyloxy with up to 3 C atoms,R.sup.2 is hydrogen, alkyl with up to 3 C atoms and alkanoyl and aroyl with up to 7 C atoms,R.sup.3 is hydrogen or methyl,R.sup.4 is a hydrogen atom in the .alpha. or .beta. position,R.sup.5 is hydrogen, methyl or methoxy andR.sup.6 is hydrogen or methyl,are pharmacologically effective with a profile of action like ethinylestradiol and in the form of their radioactively labeled compounds are also valuable diagnostic media.The Z-isomers can be prepared by a new process by reaction of the corresponding 17.alpha.-ethinyl steroids with trialkyl (or phenyl) tin hydride with addition of a free radical former.
    Type: Grant
    Filed: July 25, 1985
    Date of Patent: February 16, 1988
    Assignee: Schering Aktiengesellschaft
    Inventors: Helmut Hofmeister, Henry Laurent, Paul E. Schulze, Rudolf Wiechert, Walter Elger, Kunhard Pollow, Hans J. Grill