(11S,11aS)-8-Methyl-7,9-dimethoxy-11-hydroxy-10-N-(2',2',2'-tri-chloroethoxylcarbonyl)-1,2,3,10,11,11a-hexahydro-5H-pyrrolo[2,1-c][1,4]benzodiazepin-5-one → HCID 22046632, compound

Participants

Reaction Steps

10% Cd/Pb couple (1.34 g; 10.7 mmol Cd) was added to a rapidly stirring solution of 193 (1 g; 2.14 mmol) in a mixture of THF (15 mL) and 1 N NH4OAc (15 mL). After 3.5 hours the reaction was diluted with EtOAc (150 mL). The solution was dried over anhydrous MgSO4 and the solids were filtered and rinsed with EtOAc (50 mL). Removal of excess solvent yielded the product (194) as a white glass (554 mg, 2.021 mmol, 94%). 1H NMR (270 MHz, CDCl3) (mixture of imine and methyl ether forms) δ7.72 (imine, d, J=4.39, 1H), 7.29 (s, 1H), 3.90 (s, 3H), 3.88-3.51 (m, 3H+2H+1H), 2.37-2.04 (m, 4H), 2.22 (s, 3H); 13C NMR (67.8 MHz, CDCl3) δ164.65, 161.41, 156.79, 153.47, 133.87, 126.29, 124.27, 105.71, 60.98, 55.80, 55.70, 53.71, 46.70, 29.52, 29.34, 24.13, 9.33.

Provenance & Evidence