Synthesis and Tuberculostatic Activity of Novel 1,2,4-Triazoles Obtained from Heterocyclic Carbohydrazides
作者:Katarzyna Gobis、Henryk Foks、Zofia Zwolska、Ewa Augustynowicz-Kopeć
DOI:10.3987/com-09-11888
日期:——
The novel 1,2,4-triazole derivatives have been synthesized by a few different pathways. Heterocyclic carbohydrazides were used to obtain monoesters of hydrazine acids (1-6), thiosemicarbazide derivatives (7-17), and finaly 1,2,4-triazole-5-thiones (18-38). Carbohydrazides were also cyclized with methyl carbamodithioates in the presence of DBU giving 1,2,4-triazole-5-thiones (18, 19, 39-47). Two of final products (39, 40) were undergone alkylation in alkaline solution to appropriate sulfides (48-53). Then methylsulfides (48, 49) were oxidized with peroxyacetic acid to sulfoxides (54, 55). The obtained compounds were tested in vitro towards Mycobacterium tuberculosis.