2,4-Diacetyldeuteroporphyrin IX dimethylester;3,3'-(7,12-diacetyl-3,8,13,17-tetramethyl-21H,23H-porphine-2,18-diyl)-bis-propionic acid;31,81-Dioxo-mesoporphyrin
the free-base porphyrins to the corresponding protoheme IXderivatives. MesoporphyrinIX and diacetyldeuteroporphyrin IX analogues were also prepared by the same procedure. The Fe(II) complexes formed dioxygen (O2) adducts in dimethylformamide at 25 degrees C. Some of them were incorporated into the hydrophobic domain of recombinant human serum albumin (rHSA), providing albumin-heme hybrids (rHSA-heme)
Electronic Effects of Peripheral Substituents at Porphyrin Meso Positions
作者:Yaoqiu Zhu、Richard B. Silverman
DOI:10.1021/jo061951j
日期:2007.1.1
Porphyrins are stable molecules with a macrocyclic conjugated system and often peripheral substituents. This unique structure makes the electronic properties of the four meso-carbons (the methine bridges) nearly identical. Replacement of the weakly electron-polarizing 2,4-vinyl groups of protoporphyrin IX with strongly electron-polarizing acetyl groups not only leads to much lower meso-carbon reactivities