کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5270912 | 1385427 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of chlorophyll-a derivatives possessing (un)substituted 131-exo-methylene moiety and their optical properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron Letters - Volume 55, Issue 5, 29 January 2014, Pages 1093-1096
Journal: Tetrahedron Letters - Volume 55, Issue 5, 29 January 2014, Pages 1093-1096
نویسندگان
Hitoshi Tamiaki, Shun Koizumi, Kazuki Tsuji, Yusuke Kinoshita, Tomohiro Miyatake,