Synthesis of Porphyrin Receptors Modified by Glycosylated Steroids

5,10,15,20-Tetrakis-[3α-(2,3,4,6-tetra- O -benzyl-β-D-glucopyranosyl)-5β-cholan-24-yl]porphyrin and 5,10,15,20-tetrakis-[3α-(2,3,4,6-tetra- O -benzyl-β-D-galactopyranosyl)-5β-cholan-24-yl]porphyrin were synthesized by condenzation of the respective steroid aldehydes and pyrrole-1-yl magnesium bromide.