Nitrogen → HCID 90308654, compound

Participants

Reaction Steps

Solution of tert-butyl ((4aR,11bR)-3,3,6,6,11b-pentamethyl-10-nitro-4,4-dioxido-4a,5,6,11b-tetrahydro-3H-benzo[6,7]oxepino[4,5-b][1,4]thiazin-2-yl)carbamate (56 mg, 0.116 mmol) in THF (1.1 ml) was purged with N2, and hydrogenated under hydrogen balloon in the presence of palladium 10 wt. % Pd on activated carbon (37.1 mg, 0.035 mmol) for 4.5 h. The mixture was filtered through the plug of Celite, and the filter cake was washed with ethyl acetate. The combined filtrate was concentrated to afford the crude tert-butyl ((4aR,11bR)-10-amino-3,3,6,6,11b-pentamethyl-4,4-dioxido-4a,5,6,11b-tetrahydro-3H-benzo[6,7]oxepino[4,5-b][1,4]thiazin-2-yl)carbamate which was used for next step directly. MS m/z=452.1 (M+H).

Provenance & Evidence