Synthesis of some new 5-chloro-7-mercapto-1-methyl/phenyl-1,2,4-triazolo[4,5-<i>b</i>]pyrazin-2(1<i>H</i>)-ones and 5-chloro-3-thiopyrazin-2(1<i>H</i>)-one derivatives as possible antibacterial and antifungal agents
作者:B. K. Bhattacharya
DOI:10.1002/jhet.5570230123
日期:1986.1
4-triazolo[4,5-6]pyrazin-2(1/H)-ones V and their disul-phides VI, 5-chloro-3-mercapto-2(1H)-pyrazinonones III, 5-chloro-3-(N-aryl-N-acetylthioureido)-1-methyl/-phenyl-2(1H)-pyrazinones VII, 5-chloro-1-methyl/phenyl-3-sulphonamido-2(1H)-pyrazinones X and chloro-2-methyl/phenyl-(3-methyl)-3-thio-2(1H)-pyrazinones XI were synthesized starting from 3,5-dichloro-1-methyl/phenylpyrazin-2(1H)-ones I. Fifteen of these