Patents by Inventor Aina A. Zidermane

Aina A. Zidermane 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).

  • 2,6-Dimethyl-1,4-dihydropyridine-3,5-dicarboxylic acid esters and method for preparing same
    Patent number: 4293700
    Abstract: 2,6-Dimethyl-1,4-dihydropyridine-3,5-dicarboxylic acid esters of the general formula: ##STR1## wherein R is a substituted alkyl or terpenyl. A method for preparing said esters comprises reacting esters of acetoacetic acid of the general formula: CH.sub.3 COCH.sub.2 COOR, wherein R is a substituted alkyl or terpenyl, with hexamethylenetetramine in the presence of ammonium acetate in ethanol at its boiling temperature; said esters of acetoacetic acid of the above general formula, hexamethylenetetramine and ammonium acetate can be used in stoichiometric proportions.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: October 6, 1981
    Inventors: Yan R. Uldrikis, Ieva E. Preisa, Gunar Y. Dubur, Aina A. Zidermane, Egils A. Biseniex, Gunar D. Tirzit
  • 1-(5-Fluoruracil-1)-2,5-di-O-acetyl-.beta.-D-glucofuranurono-6,3-lactone
    Patent number: 4232149
    Abstract: 1-(5-Fluoruacil-1)-2,5-di-O-acetyl-.beta.-D-glucofuranurono-6,3-lactone has the formula ##STR1## Said substance has a marked antiblastic action. The substance is less toxic compared with the known preparation of similar action.
    Type: Grant
    Filed: July 27, 1978
    Date of Patent: November 4, 1980
    Inventors: Ruta A. Paegle, Marger J. Lidaka, Regina A. Zhuk, Juris A. Maurinsh, Aina A. Zidermane, Marite K. Kilevitsa
  • Substituted 2-[2'-(5"-nitrofuryl-2")vinyl-and 4'-(5"-nitrofuryl-2"-1,3-butadieryl]quinoline-4-carboxylic acid amides and salts thereof
    Patent number: 4201784
    Abstract: New compounds of the nitrofuran series are provided, having the following general base formula: ##STR1## where R=CH.sub.2 CH.sub.2 CH.sub.2 OH; --CH(CH.sub.3)(CH.sub.2).sub.3 N(C.sub.2 H.sub.5).sub.2n=1,2and which may be in the form of salts.These compounds, both in the form of base and salt, exhibit a contact-action antiblastic effect. The advantage of these compounds resides in high selectivity of their action on tumoral cells combined with a germicidal activity.These compounds may be used in the medicine as an active source of antiblastic preparations.
    Type: Grant
    Filed: September 7, 1978
    Date of Patent: May 6, 1980
    Assignee: Institut Organicheskogo Sinteza Akademii Nauk Latviiskoi SSR
    Inventors: Nina M. Sukhova, Marger J. Lidaka, Valentina A. Voronova, Aina A. Zidermane, Iya M. Kravchenko, Anda Z. Dauvarte, Ieva E. Preisa, Dainuvite V. Meirena