3-(Boc-amino)-L-alanine → 3-[(tert-butoxycarbonyl)amino]-N-({4-[(3-chloro-2-fluorophenyl)amino]-7-methoxyquinazolin-6-yl}methyl)-L-alanine

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Reaction Steps

4-(3-Chloro-2-fluoroanilino)-7-methoxyquinazoline-6-carbaldehyde was coupled with 3-[(tert-butoxycarbonyl)amino]-L-alanine (Tetrahedron Letters (1993), 34(20), 3201-4) using an analogous method to that described for the equivalent step in Example 1 to give 3-[(tert-butoxycarbonyl)amino]-N-({4-[(3-chloro-2-fluorophenyl)amino]-7-methoxyquinazolin-6-yl}methyl)-L-alanine; 1H NMR Spectrum: (DMSO-d6) 1.32 (s, 9H); 3.26 (m, 3H); 3.86 (d, 1H); 3.97 (m, 4H); 6.73 (s, 1H); 7.21 (s, 1H); 7.27 (t, 1H); 7.47 (t, 1H); 7.54 (t, 1H); 8.40 (s, 1H); 8.44 (s, 1H); 9.86 (s, 1H); Mass Spectrum: (M+H)+ 520.

Provenance & Evidence