1,2-Dichloroethane → HCID 87258275, compound

Participants

Reaction Steps

A suspension of (±)-(E)-3-{1′-(1-methyl-1H-indol-3-ylmethyl)-4-oxo-spiro[2H-(1,3)-benzoxazine-2,3′-piperidin]-6-yl}-acrylic acid (150 mg, 0.348 mmol) in DCM (4 ml) was treated with TEA (0.070 ml, 0.52 mmol) and then with EDC (99 mg, 0.52 mmol), HOBt (70 mg, 0.52 mmol) and NH2OTHP (49 mg, 0.42 mmol) following the procedure described in Example 30, Step B, giving (±)-(E)-3-{1′-(1-methyl-1H-indol-3-ylmethyl)-4-oxo-spiro[2H-(1,3)-benzoxazine-2,3′-piperidin]-6-yl}-N-(tetrahydro-pyran-2-yloxy)acrylamide as a white solid [LC-MS: (ES+) MH+: 531]. The solid was suspended in DCM (5 ml) and treated with 4 M HCl in dioxane (1 ml) as described in Example 30, Step C to give, after purification by preparative HPLC, (±)-(E)-3-[1′(1-methyl-1H-indol-3-ylmethyl)-4-oxo-spiro[2H-(1,3)-benzoxazine-2,3′-piperidin]-6-yl]-N-hyroxy-acrylamide (40 mg, trifluoroacetic salt) as a brown solid.

Provenance & Evidence