4H-Quinolizine-3-carboxylicacid, 8-[(3S)-3-amino-1-pyrrolidinyl]-1-cyclopropyl-7-fluoro-9-methyl-4-oxo-,hydrochloride (1:1) → HCID 479584, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 25 mg 8-(3(S)-aminopyrrolidinyl)-1-cyclopropyl-7-fluoro-9-methyl-4-oxo-4H-quinolizine-3-carboxylic acid hydrochloride (from Example 257) and 40 mg of sodium acetate in 0.7 mL of ethyl acetate was heated to 100° C. To this solution was added 0.009 mL of dimethoxytetrahydrofuran dropwise, and the reaction was stirred at 110° C. for 5 rnin, then quenched by addition of water. The mixture was extracted twice with methylene chloride, and the extract was washed with water, dried over MgSO4 and concentrated. The residue was purified by preparative TLC, eluting with 100:10 chloroform:methanol, to give 13.6 mg of the title product as a yellow solid after removal of the solvent. MS 395 (M-Cl)+. 1H NMR (CDCl3) ∂: 0.67 (m, 2H), 1.00 (m, 2H), 2.20 (m, 1H), 2.46 (m, 1H), 2.56 (m, 1H), 2.66 (s, 3H), 3.89 (m, 1H), 3.99 (m, 2H0, 4.15 (m, 1H), 4.86 (m, 1H), 6.23 (t, 2H, J=2 Hz), 6.79 (t, 2H, J=2 hz), 8.32 (s, 1H), 9.15 (d, 1H, J=10 Hz), 13.83 (br, 1H).

Provenance & Evidence