Patents by Inventor Hellmut Ueberwasser

Hellmut Ueberwasser 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: 4150127
    Abstract: Novel 19-oxygenated steroids of the 20-spiroxane series of the formula ##STR1## in which R.sup.3 is a lower alkyl radical carrying an oxygen-containing functional group and R.sup.4 is two hydrogen atoms or an oxo group, and which carry a double bond or a methylene group in the 6,7-position or carry a lower alkanoylthio group in the 7.alpha.-position, and the corresponding 17.beta.-hydroxy-21-carboxylic acids of the formula ##STR2## in which R.sup.3 is as defined above, and which carry a double bond or a methylene group in the 6,7-position, as well as salts thereof and 1,2-dehydro derivatives of all of these compounds are advantageous as potassium-saving diuretics in therapy since they antagonize the physiological effects of aldosterone but have only slight side effects on sexual functions of the body. The compounds are obtainable by conventional general preparation processes of steroid chemistry.
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: April 17, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Georg Anner, Hellmut Ueberwasser, Michel Biollaz, Peter Wieland