Start with the basic porphyrin structure, which is a tetrapyrrolic macrocycle. Introduce appropriate functional groups (A, B, and C) to modify its properties. These groups can affect solubility, reactivity, and targeting. Carefully design the synthetic route to achieve the desired A2BC-type structure. The choice of A, B, and C groups depends on the specific goals of the PDT application.
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5,10,15,20-tetra(n-hexyl)phorphyrin
4-(benzyloxy)-3,5-bis(3-hydroxypropyl)-2',6'-dinitrobiphenyl
