HCID 66846334, compound → HCID 66845777, compound

Participants

Reaction Steps

Prepared analogously to Example 5d), starting from 2-(6-methoxypyridin-3-yl)-3-hydroxy-6-(N-tertbutoxycarbonylamino)-4H-1-benzopyran-4-one. Yield: 74%; TLC (9/1 Chloroform/Methanol): Rf 0.89, 1H-NMR (d6-DMSO): 9.78 (s broad, 1H), 8.81 (d, 1H), 8.31 (d, 1H), 8.25 (dd, 1H); 7.79 (dd, 1H); 7.68 (d, 1H); 7.30 (m, 5H), 6.97 (d, 1H); 5.16 (s, 2H), 3.94 (s, 3H), 1.52 (s, 3H).

Provenance & Evidence