反应详情

The title compound was prepared as described in General Method 4 using 30 g of 6-[2-(4-benzyloxy-phenyl)-ethyl]-4-hydroxy-6-isopropyl-5,6-dihydro-pyran-2-one (prepared in the paragraph above), 3 g of 20% Pd over charcoal and 600 mL of THF. The crude compound was purified by silica gel filtration. 1H NMR (DMSO-d6) δ 0.83 (d, 3 H), 0.86 (d, 3 H), 1.78 (m, 2 H), 2.06 (m, 1 H), 2.25 (d of ABX q, 1 H), 2.39 (m, 2 H), 2.53 (d of ABX q, 1 H), 4.89 (s, 1 H), 6.6 (d, 2 H), 6.89 (d, 2 H), 9.1 (br s, 1 H).

1. filtrationThe crude compound was purified by silica gel filtration