The instantly claimed invention is a process for preparing novel 7-thioether derivatives of 2-aryl, 3 aryl, and 2,3-diary-2,5,7,7-tetra-hydro-3H-pyrrolo [1,2-a] imidazole and 8-thio-ether derivatives of 2-aryl, 3-aryl, and 2,3-diaryl-2,3,5,7,7,8-hexahydro-imidazo [1,2-a]-pyridine which comprises (a) contacting the corresponding amidine with about one molar equivalent of R.sub.1 SSR.sub.1 in the presence of about two molar equivalents of base and at a temperature of -78.degree. C. to about 0.degree. C. (b) contacting the corresponding amidine compound with about two molar equivalents of R,SSR, in the presence of about two molar equivalents of a base and at a temperature of from about -78.degree. C. to about 23.degree. C., said compounds being useful as immunomodulators.
这项即时声明的发明是一种制备新型2-芳基,3-芳基和2,3-二芳基-2,5,7,7-四氢-
3H-吡咯[1,2-a]
咪唑的7-
硫醚衍
生物和2-芳基,3-芳基和2,3-二芳基-2,3,5,7,7,8-六氢-
咪唑[1,2-a]-
吡啶的8-
硫醚衍
生物的过程,包括(a)在大约两摩尔当量碱和温度为-78°C至约0°C的条件下,将相应的酰胺与大约一个摩尔当量的R.sub.1 SSR.sub.1接触;(b)在大约两摩尔当量碱和从约-78°C到约23°C的温度下,将相应的酰胺化合物与大约两摩尔当量的R,SSR接触,这些化合物有用作免疫调节剂。