2-巯基噻唑啉 、
3-(1-methyl-3-indolyl)-4-<1-<3-(methylsulfonyloxy)propyl>-3-indolyl>-1H-pyrrole-2,5-dione 以there were obtained 18 mg of 3-(1-methyl-3-indolyl)-4-[1-[3-(2-thiazolin-2-ylthio)propyl]-3-indolyl]-1H-pyrrole-2,5-dione m.p. 170°-173° C.的产率得到3-(1-methyl-3-indolyl)-4-[1-[3-(2-thiazolin-2-ylthio)propyl]-3-indolyl]-1H-pyrrole-2,5-dione