Electrophilic aromatic halogenation of perylenequinones: a strategy to improve photodynamic properties.
Halogen substitution is a widely used strategy in medicinal chemistry to modulate the physicochemical and biological properties of drug candidates. Here, we report the electrophilic aromatic halogenation of two fungal perylenequinones, ent-shiraiachrome A (1) and hypocrellin B (2), using N-halosuccinimides, where the r...