反应详情

The 1-{6-[(6-ethoxy[1,2,4]triazolo[4,3-b]pyridazin-3-yl)sulphanyl]-1,3-benzothiazol-2-yl}-3-[2-(morpholin-4-yl)ethyl]urea was prepared according to the method described in Example 17a, but using 613 mg of 1-[2-(morpholin-4-yl)ethyl]-3-(6-sulphanyl-1,3-benzothiazol-2-yl)urea, 20 cm3 of degassed ethanol, 7 mg of potassium dihydrogen phosphate in 0.2 cm3 of water, 699 mg of DL-dithiothreitol and 300 mg of 3-chloro-6-ethoxy[1,2,4]triazolo[4,3-b]pyridazine. 354 mg of 1-{6-[(6-ethoxy[1,2,4]triazolo[4,3-b]pyridazin-3-yl)sulphanyl]-1,3-benzothiazol-2-yl}-3-[2-(morpholin-4-yl)ethyl]urea are thus obtained in the form of a white powder, the characteristics of which are as follows:

1. customThe 1-{6-[(6-ethoxy[1,2,4]triazolo[4,3-b]pyridazin-3-yl)sulphanyl]-1,3-benzothiazol-2-yl}-3-[2-(morpholin-4-yl)ethyl]urea was prepared