Compound 13a was prepared by following the procedure of Example 1, Step f, except 12a was substituted for 6a, 1-[2-methylamino-2-(S)-phenyl-ethyl]-pyrrolidin-3-(S)-ol dihydrochloride was substituted for methyl-[1-(S)-phenyl-2-pyrrolidin-1-yl-ethyl]-amine and diisopropylethylamine (3.3 eq) was substituted for diisopropylethylamine (2.2 eq). The resulting oil was dissolved in dichloromethane (0.1 M) and a solution of hydrochloric acid (5.5 eq) in ether (2.0 M) was added slowly at 0° C. The solvent was removed under reduced pressure. The resulting solid was triturated with ether then filtered off to afford the product as the hydrochloric acid salt. (55%) 1H NMR (400 MHz, DMSO-d6) δ 10.22-10.72 (m, 1H), 7.55 (m, 1H), 7.18-7.42 (m, 9H), 6.17 (m, 1H), 5.42-5.62 (m, 1H), 4.44 (m, 1H), 4.13 (m, 3H), 3.84 (m, 2H), 3.40-3.72 (m, 3H), 3.17 (m, 1H), 2.83 (s, 3H), 2.76 (m, 3H), 2.09-2.35 (m, 1H), 1.89 (m, 1H). Mass Spectral Analysis m/z=446.4 (M+H)+ tR=3.45 min (98%)
