Title of article
Structural determination of purpurin-18 (as methyl ester) from sedimentary organic matter
Author/Authors
Ruben Ocampo، نويسنده , , Daniel J. Repeta، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1999
Pages
5
From page
189
To page
193
Abstract
We report the isolation and structural determination (RP-18 HPLC, UV–VIS, MS, 1H NMR and two-dimensional 1H NMR (COSY and ROESY)) of purpurin-18 (as methyl ester) from geological samples. Existing data suggest that purpurins-18 are derived from chlorophyll or its transformation products by postdepositional, microbially mediated processes in sediments. Diagenetic transformations of purpurins-18 can lead through fossilization to pyrroporphyrins and some ETIO porphyrins isolated from sediments.
Keywords
Redox potential , NMR , antioxidant , purpurin-18 , Porphyrins , etioporphyrins , chlorins , tetrapyrroles , pyrroporphyrins
Journal title
Organic Geochemistry
Serial Year
1999
Journal title
Organic Geochemistry
Record number
752672
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