ChemInform Abstract: Synthesis and Photobiological Activity of New N,N‐Disubstituted 4‐Amino‐3‐chloroangelicins.

Cyclocondensation of the enaminones (III), derived from the enol (I) and the amines (II), with dichloro ketene gives the unstable furobenzopyranones (V) which are directly dehydrochlorinated and then aromatized to yield the title compounds (VII).