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Using General Procedure B, reaction of COMPOUND 249, pyridine-2-carboxaldehyde and NaBH(OAc)3 in CH2Cl2 gave COMPOUND 252 as an amber solid. 1H NMR (CDCl3) δ 1.84-1.87 (m, 4H), 1.92-2.00 (m, 2H), 2.09 (s, 6H), 2.45-2.50 (m, 1H), 2.95 (d, 2H, J=10.2 Hz), 3.60 (s, 2H), 3.84 (s, 4H), 7.04-7.09 (m, 2H), 7.12-7.17 (m, 1H), 7.33-7.39 (m, 2H), 7.61-7.67 (m, 1H), 8.34 (d, 2H, J=3.0 Hz), 8.55 (d, 1H, J=6.0 Hz). 13C NMR (CDCl3) δ 18.39, 27.28, 54.32, 55.20, 57.77, 64.99, 122.26, 122.61, 123.50, 133.78, 136.69, 138.26, 146.19, 149.60, 157.92, 159.31. ES-MS m/z 402 (M+H). Anal. Calcd. for C25H31N5.1.0H2O: C, 71.57; H, 7.93; N, 16.69. Found: C, 71.73; H, 7.99; N, 16.54.