This compound was prepared using Step 2 intermediate from Intermediate 2 (1.00 g, 2.160 mmol), [2-(2,2-dimethylpropoxy)-3-methoxy)]benzaldehyde (527 mg, 2.316 mmol) and NaH (92 mg, 2.685 mmol) in dry DMSO (10 ml) according to the procedure outlined in Intermediate 2, Step 3 to yield a crude residue which was purified by column chromatography using 2% ethyl acetate in chloroform to afford the 1.416 g of the desired compound as a white solid: 1H NMR (300 MHz, DMSO-d6) 1.08 (s, 9H), 3.56 (s, 2H), 3.79 (s, 3H), 6.26 (s, 1H), 7.01-7.17 (m, 2H), 7.33-7.35 (m, 1H), 7.46 (d, J=4.8 Hz, 1H), 7.97 (d, J=4.8 Hz, 1H), 8.11-8.16 (m, 1H); ESI-MS (m/z) 371.52 (M+H)+.
