Reaktion #1974

Reaktionsgleichung

8-chloro-1-cyclopropyl-7-fluoro-9-methyl-4-oxo-4H-quinolizine-3-carboxylic acid ethyl ester

sodium bicarbonate

(3R,1R)-3-(1-(t-butoxycarbonylamino)ethyl)-pyrrolidine

→

title product

3-(1-Aminoethyl)pyrrolidinyl-1-cyclopropyl-7-fluoro-9-methyl-4-oxo-4H-quinolizine-3-carboxylic acid hydrochloride

Lösungsmittel

acetonitrile

Reaktionsbedingungen

Vorschrift

A 0.35 g sample of 8-chloro-1-cyclopropyl-7-fluoro-9-methyl-4-oxo-4H-quinolizine-3-carboxylic acid ethyl ester, from Example 253i above, and 0.73 g of sodium bicarbonate were dissolved in 24 mL of anhydrous acetonitrile, reacted with (3R,1R)-3-(1-(t-butoxycarbonylamino)ethyl)-pyrrolidine (0.51 g, prepared as described by Schroeder et al., J. Heterocyclic Chem., 29:1481-1498 (1992)), and carried forward as described in Example 253k-l to give the title product. mp 220°-222° C. MS 374 (M+H)+ ; 1H NMR (D6 -DMSO) ∂: 0.61 (m, 2H), 0.94 (m, 1H), 1.07 (m, 1H), 1.28 (d, 3H, J=6 Hz), 1.82 (m, 1H), 2.27 (m, 2H), 2.46 (m, 1H), 2.62 (s, 3H), 3.57 (s, 1H), 3.92 (m, 1H), 7.90 (s, 1H), 8.17 (br s, 3H), 9.07 (d, 1H, J=l 1 Hz), 13.84 (brs, 1H).

Quelle