The syntheses of α, γ-meso-bis (2, 6 diaminophenyl) octaalkyl-porphyrins are described starting from 2, 6-diacetamidophenyl-bis (2'-benzyloxycarbonyl, 3', 4'-dialkyl, 5'-pyrryl) methanes. The synthesis of such double-picket-fence porphyrins enables the four amino groups to function in such a way as to protect both faces of these porphyrins.
