反应详情

[2-(4-{4-[N′-(3,5-Diamino-6-chloropyrazine-2-carbonyl)guanidino]butyl}phenoxy)ethyl]-carbamic acid tert-butyl ester 3 (2.63 g, 5.0 mmol) was dissolved in methanol (25 mL). 12N HCl (30 mL) was added in 10 ml portions. After stirring for 1 h, the reaction was complete by TLC (silica gel, methylene chloride/methanol/concentrated ammonium hydroxide, 100:10:1). The solvent was evaporated and methanol (300 mL) was added and, this process was repeated. The residue was placed under high vacuum overnight to afford the product (2.65 g, 99%) as a yellow solid, which was used without further manipulation. 1H NMR (300 MHz, DMSO-d6) δ 1.58 (m, 4H), 2.57 (m, 2H), 3.16 (m, 2H), 3.37 (m, 2H), 4.18 (t, 2H), 6.91 (d, 2H), 7.15 (d, 2H), 7.45 (m, 4H), 8.45 (br s, 3H), 9.03 (br s, 2H), 9.46 (t, 1H), 10.63 (s, 1H).

1. customThe solvent was evaporated
2. additionmethanol (300 mL) was added
3. customwas placed under high vacuum overnight