2-(Isocyanatomethyl)furan → 1-Cyclopentyl-3-furan-2-ylmethyl-7-methoxy-1H-pyrimido[5,4-c]quinoline-2,4-dione

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Reaction Steps

1-Cyclopentyl-3-furan-2-ylmethyl-7-methoxy-1H-pyrimido[5,4-c]quinoline-2,4-dione (21 mg) was prepared from 4-cyclopentylamino-8-methoxy-quinoline-3-carboxylic acid ethyl ester (0.10 mmol) and (2-furyl)methyl isocyanate (0.4 mmol) following general procedure C. LCMS: m/z 392 [M+1]+. 1H NMR (400 MHz, CDCl3): δ 9.45 (s, 1H), 7.78 (d, 1H), 7.57 (t, 1H), 7.32 (d, 1H), 7.24 (d, 1H), 6.30 (d, 1H), 6.18 (d, 1H), 5.04 (p, 1H), 4.33 (s, 2H), 4.12 (s, 3H), 2.40 (m, 2H), 2.11 (m, 4H), and 1.16 (m, 2H) ppm.

Provenance & Evidence