Ammonium Hydroxide → (3R,3aS,6aR)-Hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-1-{4-[(aminocarbonyl)oxy]benzyl}-3-[(1,3-benzodioxol-5-ylsulfonyl)(isobutyl)amino]-2-hydroxypropylcarbamate

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Reaction Steps

4-{(2S,3R)-2-({[(3R,3aS,6aR)-Hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl}amino)-4-[(1,3-benzodioxol-5-ylsulfonyl)(isobutyl)amino]-3-hydroxybutyl}phenyl 4-nitrophenyl carbonate was treated with concentrated ammonium hydroxide as described in Example 311 to afford the title compound as a white solid. 1H NMR (DMSO-d6): δ 0.78 (3H, d), 0.86 (3H, d), 1.2 (1H, dd), 1.4 (1H, br quintuplet), 1.85-1.95 (1H, m), 2.2 (1H, t), 2.65-2.80 (3H, m), 2.9-3.0 (2H, m), 3.25-3.30 (1H, m), 3.5-3.6 (4H, m), 3.7 (1H, t), 3.8 (1H, dd), 4.8 (1H, dt), 5.0 (1H, d), 5.4 (1H, d), 6.18 (2H, d), 6.8 (2H, br d), 6.9 (2H, d), 7.0 (1H, d), 7.15 (2H, d), 7.2 (1H, s), 7.25-7.30 (2H, m); MS: 636 (MH+).

Provenance & Evidence