| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5270912 | Tetrahedron Letters | 2014 | 4 Pages |
Abstract
Chlorophyll-a derivatives possessing an un/mono/disubstituted methylene moiety at the 131-position were prepared by (un)substituted methylation of the 13-carbonyl group and successive dehydration. Substitution of the 131-oxo to the methylene group slightly blue-shifted electronic absorption and emission bands in a solution and decreased chemical stability to give an oxidation product cleaved at the E-ring. Further mono/disubstitution at the methylene terminal increased wavelengths of absorption and emission maxima as well as oxidative tolerance.
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Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Hitoshi Tamiaki, Shun Koizumi, Kazuki Tsuji, Yusuke Kinoshita, Tomohiro Miyatake,