Porphyrins. 24. Identification of isomeric monoesters of natural porphyrins by PMR spectroscopy View Full Text


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Article Info

DATE

1988-06

AUTHORS

G. B. Maravin, G. V. Ponomarev

ABSTRACT

The monomethyl esters of mono(dimethylamides) and the bisdimethylamides of mesoporphyrin-IX, mesoporphyrin-III, and mesoporphyrin-XIII have been obtained, together with their zinc complexes. A relationship has been found between the chemical shifts of the signals for CONMe2 in the PMR spectra and the positions of the substituents in the porphyrin ring, enabling a correct assignment to be made for the first time of these signals to the groups in positions 132 and 172 of the porphyrin ring, to establish the structures of the isomeric monomethyl esters of mesoporphyrin-IX, and to develop a method of identifying monoesters of natural porphyrins by converting them into the monoesters of the mono(dimethylamides) of mesoporphyrin-IX, followed by examination of their PMR spectra. More... »

PAGES

637-642

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00475598

DOI

http://dx.doi.org/10.1007/bf00475598

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1038672720


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