Hydrochloric Acid → 5-{[2-Tert-butyl-4-(hydroxymethyl)-5-methylphenyl]sulfanyl}-6-hydroxy-2-[2-(4-hydroxyphenyl)ethyl]-2-phenyl-2,3-dihydro-4h-pyran-4-one

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Reaction Steps

The title compound was prepared as described in General Method 9 using 4-hydroxy-6-[2-(4-hydroxy-phenyl)-ethyl]-6-phenyl-5,6-dihydro-pyran-2-one (0.2 g, 0.64 mmol) from Example TT, toluene-4-thiosulfonic acid S-(2-tert-butyl-4-hydroxymethyl-5-methyl-phenyl) ester (prepared in Example FFF; 0.26 g, 0.71 mmol), K2CO3 (0.35 g, 2.5 mmol), and DMF (3 mL). The solution was stirred overnight at room temperature and then poured into 1N HCl and EtOAc. The organic phase was dried (MgSO4), and concentrated. Purification by silica gel chromatography, eluting with MeOH:CH2Cl2 :hexane (5:80:20 to 5:95:0) gave the title compound, m.p. 196°-199° C. 1H NMR (DMSO-d6) δ 1.44 (s, 9 H), 1.76 (s, 3 H), 2.08-2.21 (m, 3 H), 2.42 (m, 1 H), 3.41 (dd, 2 H), 4.32 (s, 2 H), 4.91 (br s, 1 H), 6.16 (s, 1 H), 6.61 (d, 2 H), 6.86 (d, 2 H), 7.21 (s, 1 H), 7.34-7.46 (m, 5 H), 9.14 (s, 1 H), 12.15 (bs, 1 H).

Provenance & Evidence