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Chemistry Letters
Vol. 43 (2014) No. 5 P 732-734




A high-molecular-weight water-soluble manganese(III) porphyrin having four poly(ethylene glycol) tails was prepared, which enhanced the T1 relaxation rate of water protons by ca. 7.5-fold compared with manganese(III)–tetra(4-sulfonatophenyl)porphyrin. The new compound also exhibited superoxide dismutase-like activity and significantly lower cytotoxicity.

Copyright © 2014 The Chemical Society of Japan

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