Reaction Steps
A solution of NaOH (1.2 mL, 1.2 mmol, 1 M aqueous solution) was added to solution of acetate 10 (0.593 g, 1.11 mmol) in MeOH:THF (10:3 mL) at room temperature, and the reaction mixture was stirred for 30 minutes at room temperature. The reaction mixture was partially concentrated under reduced pressure, diluted with EtOAc (approximately 25 mL) and water (approximately 10 mL), the organic layer was separated, washed with brine, and dried over anhydrous MgSO4. Solvents were evaporated under reduced pressure, and the residue was separated by chromatography (Hex:EtOAc:CH2Cl2 3:2:1+1.5% of Et3N) to provide 0.493 g (0.89 mmol, 81%) of alcohol 11 as slightly yellow oil that crystallizes on standing. 1H NMR: 7.65 (dd, J=8.4, 2.4 Hz, 2 H), 6.92-6.82 (m, 4 H), 4.18 (t, J=4.4 Hz, 2 H), 4.04 (t, J=6.4 Hz, 2 H), 3.92 (m, 4 H), 3.88 (t, J=4.4 Hz, 2 H), 3.77 (t, J=4.4 Hz, 2 H), 3.68 (t, J=4.4 Hz, 2 H), 3.24 (d, J=10.8 Hz, 2 H), 2.41 (d, J=10.8 Hz, 2 H), 1.76 (p, J=7.2 Hz, 2 H), 1.50 (sex, J=7.6 Hz, 2 H), 1.21 (s, 3 H), 1.19 (s, 3 H), 0.99 (t, J=7.2 Hz, 3 H); 13C NMR: 159.8, 159.2, 147.4, 131.84, 131.75, 131.67, 131.57, 124.4, 123.6, 119.8, 119.1, 116.3, 116.2, 112.2, 84.1, 79.4, 72.8, 69.8, 68.0, 76.7, 62.0, 37.1, 31.5, 30.8, 22.9, 19.4, 14.2.
