PORPHYRINS AND CANCER TREATMENT

摘要

This invention provides novel compounds for therapy of tumours susceptible to necrosis when an appropriate compound is administered followed by illumination with light of a wavelength absorbed by the compound, the compounds being dihydro porphyrins of the formula, or the corresponding tetra-hydro porphyrins: <IMG> IV where n = 1 to 3 and each substituent R, the same or different and at the same or different position in its respective substituent phenyl ring, is an hydroxy group.