中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-Methylsulfanyl-5-pyrazin-2-yl-1,3,4-thiadiazole | —— | C7H6N4S2 | 210.283 |
—— | 2-Pyrazin-2-yl-5-[2-[(5-pyrazin-2-yl-1,3,4-thiadiazol-2-yl)sulfanyl]ethylsulfanyl]-1,3,4-thiadiazole | —— | C14H10N8S4 | 418.551 |
—— | 2-(4-bromomethylthio)-5-(pyrazin-2-yl)-1,3,4-thiadiazole | 1404052-58-9 | C13H9BrN4S2 | 365.277 |
—— | 2-(4-chlorophenylthio)-5-(pyrazin-2-yl)-1,3,4-thiadiazole | 1404052-57-8 | C13H9ClN4S2 | 320.826 |
—— | 2-(3-bromomethylthio)-5-(pyrazin-2-yl)-1,3,4-thiadiazole | 1404052-55-6 | C13H9BrN4S2 | 365.277 |
Syntheses are described for N,N-dimethyl-2-[5'-(pyridin-2''-yl)-1',3',4'-thiadiazol-2'-ylthio]ethylamine; the homologous propylamine; the N,N-diethyl homologue; the 5'-phenyl analogue; and some substituted phenyl, pyrazinyl and pyrimidinyl analogues. Unlike the pyridin-4''-yl isomer previously described, these compounds proved but mediocre amplifiers of phleomycin-G in vitro against Escherichia coli. Testing in vivo against Ehrlich's tumour in mice was therefore confined to the pyridin-4''-yl compound and to N,N-dimethyl-2-(6'-methyl-2'-phenylpyrimidin-4'-ylthio)ethylamine: the first showed considerable amplifying power towards two phleomycins and a bleomycin; the second, only marginally less amplification towards the same phleomycins.