“…This organic portion is dried over anhydrous Na 2 SO 4 and the crude product was recovered via liquid column chromatography over silica powder using hexane: EtOAc (9 : 1 v/v). J = 8.3 Hz), 7.29-7.26 (2d-J = 7.9 Hz, 1 m-J = 4.9 Hz), 5.95 (1H, s), 4.57 (1H, s); 13 C NMR (126 MHz, CDCl 3 ) δ: 199. 1, 139.1, 133.9, 133.6, 129.2, 128.8, 128.7, 127.9, 77.3, 76.3; FT-IR (cm À 1 ): 3419, 1680, 1263, 1067; ee (ADÀ H; i-PrOH/hexane [1 : 9 v/v], 0.25 μL/min, 254 nm): 98%[t R (major, 17.862 min), t R (minor, 22.578 min)].…”