Dihydrothienopsoralens: New furocoumarins as potential photoreacting agents

A series of new dihydrothienopsoralen derivatives were synthesized from 6-hydroxybenzo[b]furan in four steps in good yield. These compounds were prepared as potential photosensitizing and chemotherapeutic agents for psoriasis. The spectroscopy study in also reported and showed an absorbance at λ = 364 nm and fluorescence at λ = 440 nm with high molar absorptivity, wave length used to perform the photochemical and photobiological experiments.