Cesium carbonate → HCID 59997216, compound

Participants

Reaction Steps

A mixture of 59 mg (0.1 mmol) of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-3-[(1,3-benzodioxol-5-ylsulfonyl)(isobutyl)amino]-2-hydroxy-1-(4-hydroxybenzyl)propylcarbamate, 42 mg (0.3 mmol) of 2-chloro-5-nitropyridine and 65 mg (0.2 mmol) of cesium carbonate in 0.5 mL of dimethyl formamide was stirred at rt for 12 h. The mixture was diluted with ethyl acetate and extracted with water. Evaporation of the solvent and chromatography on silica gel (1:1 ethyl acetate/hexane) gave the title compound (38 mg) as a white foam. 1H-NMR:0.83(6H,dd), 1.7(2H,m),1.8(2H,m), 2.8-3.2(7H,m), 3.7(3H.m), 3.8-4(4H,m), 5.0(2H,m), 5.62(1H,d), 6.03(2H,s), 6.85(1H,d), 6.97(1H,d), 7.02(2H,d), 7.18(1h,s), 7.35(2H,d), 7.4(1H,d), 8.42(1H,d), 8.90(1H,d). MS: 715

Provenance & Evidence