| abstract |
There is provided a process for the preparation of a compound of formula I, which process comprises: (a) reaction of a compound of formula II, HO-D-NH 2 II with a compound of formula III, followed by (b) reaction of the intermediate of formula IV thereby formed, IV with base and a compound of formula V, R 2 S(O) 2 L 2 V, wherein the intermediate of formula IV is not isolated, and wherein D, R 1 , R 2 , L 1 and L 2 have meanings given in the description. |