TETRACYCLICAL DERIVATIVES FROM PYRIMIDINE

摘要

The present invention relates to medicine, and especially to pharmacology, veterinary medicine, cosmetology and, more concretely, to synthetical biologically active compounds of a heterocyclical series having antimicrobial, antiviral, antichlamydia and immunostimulating effects: derivatives from 5-oxy-5H-(1)benzopyrano-(5,6-b)-4-oxy-4H-(1,2)-pyrimido-1,4,5,6-tetrahydro-1,3-thiazine. It is characterized by the synthesis of the new class of heterocyclical compounds, i.e. derivatives from 5-oxy-5H-(1)benzopyrano-(5,6-b)-4-oxy-4H-(1,2)-pyrimido-1,4,5,6-tetrahydro-1,3-thiazine (1) of general formula (1); (1-X) where R1 is H or halogen; R2 is H or halogen or a nitro group or a hydroxy group or a metoxy group. The above-mentioned objective can be reached with R1=R2=H (I); R1=C1 (II); R1=R2=C2 (III); R1=H and R2=Br (IV); R1=R2=Br (V); R1=H and R2=NO2 (VII); R1=Br and R2=NO2 (VIII); R1=H and R2=OCN3 (IX); R1=H and R2=OH (X). The inventive synthesis of the substances concerned is a two-step processus: 1) synthesis of 5-oxy-5H-(1)benzopyrano-(5,6-b)-4-oxy-4H-(1,2)-pyrimido-1,4,5,6-tetrahydro-1,3-thiazine (XI) from 2-thiobarbituric acid (XII) and 1,3-dihalogenpropane (XIII); 2) the compound concerned (1-X) is obtained from the intermediate substance produced during the first step and the derivative corresponding to salicylaldehyde (XIV).