Topic
Protoporphyrins
About: Protoporphyrins is a research topic. Over the lifetime, 145 publications have been published within this topic receiving 3486 citations.
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1 citations
Patent•
20 Oct 2011
TL;DR: In this paper, a method for preparing a biosample, capable of effectively extracting and solubilizing protoporphyrins from a sample to be inspected to efficiently measure the same, without having to affect a detection system.
Abstract: PROBLEM TO BE SOLVED: To provide a method for preparing a biosample, capable of effectively extracting and solubilizing protoporphyrins from a sample to be inspected to efficiently measure the same, without having to affect a detection system.SOLUTION: The biosample is prepared by adding a solubilizing agent, such as, a surfactant or the like to the sample to be inspected to solubilize protoporphyrins, and the cancer of digestive system is detected by detecting protoporphyrins by using the biosample.
1 citations
TL;DR: In this article, the thermodynamic stability of Mg II -porphyrins in aqueous solution at physiological pH and room temperature was investigated in relation to the mechanisms of the reactions which lead to their formation and utilization in chlorophyll biosynthesis.
1 citations
TL;DR: In this article, it was shown that the relative position of the two acetyl groups influences the absorption pattern of the visible spectrum more precisely than was previously appreciated, and it is possible to recognize the 1,4, 2,3 and 2,4 relative distribution of the acetyl group by an examination of the electronic spectrum.
Abstract: A range of isomeric diacetyldeuteroporphyrins has been synthesized by the oxidative cyclization of appropriately substituted bilenes-b, and the electronic and n.m.r. spectra of these porphyrins have been studied. As a result it has been shown that the relative position of the two acetyl groups influences the absorption pattern of the visible spectrum more precisely than was previously appreciated. In consequence, it is possible to recognize the 1,4, 2,3 and 2,4 relative distribution of the acetyl groups by an examination of the electronic spectrum. In addition, it is clear that the acetyl groups present in this series of porphyrins affect the chemical shift of all the methine protons and not only the one which is directly adjacent to the carbonyl function.