Abstract: Disclosed are compounds effective against tuberculosis based on substituted 1,2,4-oxadiazoles of general formula I, where Y?S or CH2 and R=phenyl- or phenyl-substituted in positions 2, 3, 4, and 5 by one or several electron-acceptor groups or electron-donor groups. These compounds can be produced by easy syntheses and are characterized by low toxicity and high efficacy against mycobacteria, including multiresistant strains thereof. Also disclosed are a pharmaceutical preparation containing substituted 1,2,4-oxadiazole of formula I as an active substance as well as the use of this substituted 1,2,4-oxadiazole as an antituberculosis drug.

Abstract: The invention relates to amino acid derivatives of general formula (I), wherein R1 is H or CH3, X is H or NR2R3, wherein R2 is H, CH3, COH or COCH3 and R3 is H, CH3 or COO—Z wherein Z is R2R3 NH+CHR1(CH2)nCOO(CH2)mCH2Y; Y is H, CH3 or NHR4, wherein R4 a COO—NH3+CH2(CH2)mOOC(CH2)nCH3, the meaning of group (CH2)m being selected from alkyls, secondary alkyls, monocycloalkyls, bicycloalkyls and tricycloalkyls having from 4 to 15 carbon atoms and n having a value of from 3 to 14.