Putrescine → N,N'-(butane-1,4-diyl)bis(4-(6,8-dichloro-2-methyl-1,2,3,4-tetrahydroisoquinolin-4-yl)benzenesulfonamide)

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To a solution of 4-(6,8-dichloro-2-methyl-1,2,3,4-tetrahydroisoquinolin-4-yl)benzene-1-sulfonyl chloride (intermediate 10.6) (150 mg, 0.353 mmol) in chloroform (0.706 mL) was added DIEA (182 mg, 1.412 mmol) and a solution of butane-1,4-diamine (15.5 mg, 0.176 mmol) in chloroform (0.176 mL). The reaction was stirred overnight at which point the solvent was removed and the resulting residue brought up in 50% IPA/H2O. Purification by preparative HPLC gave the title compound (18.4 mg) as a TFA salt. 1H-NMR (400 MHz, CD3OD): δ7.86 (d, 4H), 7.53 (s, 2H), 7.45 (d, 4H), 6.84 (s, 2H), 4.73 (m, 3H), 4.46 (d, 2H), 3.86 (dd, 2H), 3.57 (t, 2H), 3.12 (s, 6H), 2.84 (m, 4H), 1.41 (m, 4H). MS (m/z): 797.15 (M+H).

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