Patents by Inventor Leonard S. Povarov

Leonard S. Povarov 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).

  • 13-(1-Oxyl-2,2,6,6-tetramethylpiperylidenyl-4)hydrazone rubomycin hydrochloride with a paramagnetic center and a method of producing same
    Patent number: 4332934
    Abstract: A novel chemical compound is 13-(1-oxo-2,2,6,6-tetramethylpiperylidenyl-4)hydrazone rubomycin hydrochloride, featuring a paramagnetic center and corresponding to the formula ##STR1## The novel compound is formed by reacting rubomycin base with 1-oxo-2,2,6,6-piperidone-4-hydrazone.The novel compound is capable of inhibiting the growth of malignant tumors and is applicable in medicine; it features reduced toxicity, higher antitumor activity and a wider range of action as compared to known rubomycin derivatives.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: June 1, 1982
    Inventors: Nikolai M. Emanuel, Nina P. Konovalova, Leonard S. Povarov, Anatoly B. Shapiro, Raisa F. Dyachkovskaya, Valentina I. Suskina, Ljudmila K. Denisova