Trifluoroacetic acid → (7bR,11aS)-6-(4-methoxy-2-methylphenyl)-1,2,7b,8,9,10,11,11a-octahydro-4H-pyrido[4,3-b][1,4]thiazepino[6,5,4-hi]indole

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Reaction Steps

To a solution of tert-butyl (7bR,11aS)-6{4-methoxy-2-methylphenyl)-1,2,7b,10,11,11a-hexahydro-4H-pyrido[4,3-b][1,4]thiazepino[6,5,4-hi]indole-9(8H)-carboxylate (34 mg, 0.07 mmol) in CH2Cl2 (5 ml) at 25° C. was added trifluoroacetic acid (1 mL). The mixture was stirred at ambient temperature for 1 hour before saturated NaHCO3 (10 mL) was added and then extracted with EtOAc (2×20 mL). The combined extracts were dried over magnesium sulfate and concentrated to afford the title compound of EXAMPLE 9. 1H NMR (CDCl3, 300 MHz): δ 7.16 (d, 1H, J=8.0 Hz), 6.88 (s, 1H), 6.75 (m, 3H), 3.80 (s, 3H), 3.80 (m, 1H), 3.65 (m, 1H), 3.52 (m, 1H), 3.23-2.85 (m, 6H), 2.61 (m, 1H), 2.24 (s, 3H), 2.90 (m, 4H). LRMS (ES+): 367 (M+H)+.

Provenance & Evidence