Synthesis, modification, and optical properties of C3-ethynylated chlorophyll derivatives |
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| Authors: | Shin-ichi Sasaki Keisuke Mizutani Hitoshi Tamiaki |
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| Affiliation: | a Department of Bioscience and Biotechnology, Faculty of Science and Engineering, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
b Nagahama Institute of Bio-Science and Technology, Nagahama, Shiga 526-0829, Japan |
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| Abstract: | 3-Ethynyl-chlorin was prepared from methyl pyropheophorbide-d using Bestmann-Ohira reagent. The mono-substituted acetylene was subjected to copper-free, Pd-mediated coupling to form chlorin derivatives possessing a series of substituted ethynyl groups at the C3-position. Its 1,3-dipolar cycloadditions with azido compounds were also demonstrated. |
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| Keywords: | Chlorophyll Bestmann-Ohira reagent Visible absorption spectra Tetrapyrrole |
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