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Institut Organicheskogo Sinteza Akademii Nauk Latviiskoi Ssr

Ieva E Preisa

Aina A Zidermane

Gunar Y Dubur

Yan R Uldrikis

Egils A Biseniex

Marger J Lidaka

Iya M Kravchenko

Valentina A Voronova

Anda Z Dauvarte

Gunar D Tirzit

Nina M Sukhova

Dainuvite V Meirena

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.

2,6-Dimethyl-1,4-dihydropyridine-3,5-dicarboxylic acid esters and method

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.2

Substituted 2-[2'-(5'-nitrofuryl-2')vinyl-and

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Ieva E Preisa