4.7
[1]. Nils Pemberton, et al. Synthesis of multi ring-fused 2-pyridones via an acyl-ketene imine cyclocondensation. Org Lett. 26 Mar 2;8(5):95-8.
H15-H19-H5
P261-P264-P271-P28-P2+P52-P4+P4-P62+P64-P45-P51
GHS7
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