Novel complexes have been efficiently synthesized with a facile route using two different atropisomers of the same porphyrin. These compounds feature a tridentate binding site, a tyrosine molecule, and a proximal base, all bound to the porphyrin ring in different fashions, making them attractive for heme modeling purposes.
[Krishnamurthy, Divya; Sarjeant, Amy N.; Goldberg, David P.; Caneschi, Andrea; Totti, Federico; Zakharov, Lev N.; Rheingold, Arnold L. Chemistry - A European Journal, 2005 , vol. 11, # 24 p. 7328 - 7341]