4-(2-Aminoethyl)benzenesulfonamide → 4-{2-[4-(3-{[(3-Amino-propyl)-methanesulfonyl-amino]-methyl}-phenyl)-pyrimidin-2-ylamino]-ethyl}-benzenesulfonamide

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Intermediate 4 was coupled with 4-(2-Amino-ethyl)-benzenesulfonamide following procedure F and the resulting product deprotected following procedure G. LC-MS showed the product had the expected M+H+ of 519. 1H NMR (Varian 300 MHz, CDCl3—CD3OD, shifts relative to the solvent peak at 7.24 ppm) δ 8.0 (m, 2H) 7.8 (m, 1H) 7.6 (m, 4H) 7.4 (m, 1H) 7.2 (m, 2H) 4.3 (s, 2H) 3.8 (m, 2H) 3.4 (m, 2H) 2.9 (m, 2H) 2.8 (s, 3H) 2.6 (m, 2H) 1.6 (m, 2H).

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