[4-N-(3,4-dimethoxybenzyloxycarbonyl)-cytosin-1-yl]-acetic acid → 1-(Benzothiazole-2-sulfonyl)-4-{[4-N-(3,4-dimethoxybenzyloxycarbonyl)-cytosin-1-yl]-acetyl}-piperazin-2-one

Participants

Reaction Steps

The title compound was synthesized by the reaction of 1-(benzothiazole-2-sulfonyl)-piperazin-2-one trifluoroacetic acid salt with [4-N-(3,4-dimethoxybenzyloxycarbonyl)-cytosin-1-yl]-acetic acid as per the procedure of Example 52. 1H NMR (500 MHz; DMSO-d6) δ 10.73 (brs, 1H), 8.34 (m, 1H), 8.26 (m, 1H), 7.90 (d, 0.6H), 7.84 (d, 0.4H), 7.71 (m, 2H), 7.03 (s, 1H), 7.02 (t, 1H), 6.94 (s, 2H), 5.09 (s, 2H), 4.82 (s, 1.2H), 4.72 (s, 0.8H), 4.45 (s, 0.8H), 4.27 (s, 1.2H), 4.21 (t, 1.2H), 4.06 (t, 0.8H), 3.99 (t, 1.2H), 3.85 (t, 0.8H), 3.75(s, 3H), 3.74 (s, 3H).

Provenance & Evidence