Patents by Inventor Max S. de Winter

Max S. de Winter 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).

  • 19-Thio-androstane derivatives
    Patent number: 4473564
    Abstract: The invention relates to novel 19-thio-androstane derivatives having the general formula: ##STR1## and the 4,5-dihydro analogues thereof, wherein R.sub.1 =H, hydrocarbyl(1-4C), aralkyl(7-9C), aryl(6-9C) or acyl derived from an organic carboxylic acid having 1-18 C atoms;R.sub.2 =O, .alpha.R.sub.4 (.beta.R.sub.3) or an acetal group;R.sub.3 =a free, esterified or etherified hydroxyl group; andR.sub.4 =H or hydrocarbyl(1-4C);and wherein the broken lines indicate the optional presence of a double bond in the 1,2-position and/or 6,7-position, and to processes for obtaining same.The novel compounds possess aromatase-inhibiting properties.
    Type: Grant
    Filed: July 12, 1983
    Date of Patent: September 25, 1984
    Assignee: Akzo N.V.
    Inventors: Max S. de Winter, Pieter J. N. van Luit
  • Novel delta 4,9 pregnane derivatives
    Patent number: 4223030
    Abstract: New and useful steroids of the pregnane series and compositions therefor are disclosed of the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of H, F, OH, and OR.sub.2, and R.sub.2 is carbacyl of one to eighteen carbon atoms, which steroids exhibit useful pharmacological utility, to wit, progestational and/or ovulation-inhibiting activity.
    Type: Grant
    Filed: September 15, 1978
    Date of Patent: September 16, 1980
    Assignee: Akzona Incorporated
    Inventor: Max S. de Winter