Meso-derivatives of porphine containing N-methyl-4-pyridinium and 5'-0-p-phenylene-2',3'-0-protected-uridine substituents were obtained as the first representatives of water soluble porphyrinyl-nucleosides.
Czuchajowski, Leszek; Habdas, Jan; Niedbala, Halina, Journal of Heterocyclic Chemistry, 1992, vol. 29, # 2, p. 479 - 486