反应详情

To a 25 mL vial which contained a solution of the product from step 2 (120 mg, 0.26 mmol) in MeOH (2 mL) was added HCl (2 N in ether, 4 mL) at 0° C. The mixture was allowed to warm to rt and stir at rt for 24 h. The ether (10 mL) was added to the mixture and the solid which formed was filtered out to provide the crude which was further purified by recrystallization with MeOH-ether to yield the title product, (104 mg, 95%); LCMS; 100% APCI+, Calcd: 352.3; Found m/z 352.3 (M); 1H NMR (400 MHz, DMSO-d6); δ 1.68-1.75 (m, 1H), 1.84-2.02 (m, 2H), 2.07-2.16 (m, 1H), 3.13-3.26 (m, 2H), 3.80-3.90 (m, 1H), 4.05-4.10 (m, 1H), 4.18 (dd, J1=10.4 Hz, J2=3.6 Hz, 1H), 5.09 (s, 2H), 6.94-7.01 (m, 4H), 7.48 (dd, J1=8.0 Hz, J2=2.0 Hz, 1H), 7.60 (d, J=8.4 Hz, 1H), 7.68 (d, 1H, J=2.0 Hz):

1. customthe solid which formed
2. filtrationwas filtered out
3. customto provide the crude which
4. customwas further purified by recrystallization with MeOH-ether