Reaction Steps
A solution containing the product from Example 124B (0.065 g, 0.076 mmol) in ethanol (1.5 mL) was treated with 10% Pd on carbon (0.024 g), stirred under an atmosphere of hydrogen (balloon pressure) at 25° C. for 2.5 hours, filtered concentrated under reduced pressure. The residue was purified by reversed phase chromatography on a C18 column eluting with a gradient starting with 5-100% acetonitrile in water (0.1% TFA). The product was partitioned between ethyl acetate and saturated NaHCO3, and the organic phase was washed with brine and dried over MgSO4, filtered and concentrated to give the title compound (0.024 g, 39% yield). 1H NMR (300 MHz, DMSO-d6) δ ppm 0.83(s, 9H), 0.87(s, 9H), 1.60-1.48(m, 2H), 2.29-2.20(m, 1H), 2.67-2.53(m, 3H), 2.92-2.75(m, 3H), 3.16-3.08(m, 1H), 3.50(s, 3H), 3.71-3.61(m, 1H), 3.86-3.83(d, J=9.93 Hz, 1H), 4.07(s, 1H), 4.11(s, 2H), 4.23-4.09(m, 2H), 4.56-4.53(d, J=7.72 Hz, 1H), 5.00(s, 2H), 6.55-6.52(d, J=8.46 Hz, 2H), 6.67-6.64(d, J=9.93 Hz, 1H), 6.94-6.91(d, J=8.46 Hz, 2H), 7.10-7.02(m, 5H), 7.23-7.21(d, J=8.46 Hz, 2H), 7.33-7.29(m, 1H), 7.45-7.42(d, J=9.56 Hz, 1H), 7.91-7.82(m, 5H), 8.64-8.62(m, 1H).
