Sodium borohydride → 1-{2-[(2R,6S)-2,6-dimethylmorpholin-4-yl]ethyl}-3-(6-{[6-(4-fluorophenyl)[1,2,4]triazolo[4,3-b]pyridazin-3-yl]sulphanyl}-1,3-benzothiazol-2-yl)urea

Participants

Reaction Steps

The 1-{2-[(2R,6S)-2,6-dimethylmorpholin-4-yl]ethyl}-3-(6-{[6-(4-fluorophenyl)[1,2,4]triazolo[4,3-b]pyridazin-3-yl]sulphanyl}-1,3-benzothiazol-2-yl)urea was prepared according to the method described in Example 1a, but using 186 mg of 3-chloro-6-(4-fluorophenyl)-1,2,4-triazolo[4,3-b]pyridazine, 366 mg of 1-{2-[(2R,6S)-2,6-dimethylmorpholin-4-yl]ethyl}-3-(6-sulphanyl-1,3-benzothiazol-2-yl)urea, 0.14 cm3 of triethylamine and 38 mg of sodium borohydride. 73 mg of 1-{2-[(2R,6S)-2,6-dimethylmorpholin-4-yl]ethyl}-3-(6-{[6-(4-fluorophenyl)[1,2,4]triazolo[4,3-b]pyridazin-3-yl]sulphanyl}-1,3-benzothiazol-2-yl)urea are thus obtained in the form of a beige powder, the characteristics of which are as follows:

Provenance & Evidence