2023年6月28日
New J. Chem.の表紙になりました！
Silica gel-mediated chemical degradation of dimeric pyranonaphthoquinones into their monomeric units
Chiharu Ozakai, Kei Kitamura, Hiroto Kaku
New J. Chem., 2023, 47, 11751-11754. DOI:10.1039/D3NJ01957H
Abstract: We present herein the chemical degradation of dimethyl uroleuconaphins A2 and B2 mediated by silica gel. The reaction promoted carbon–carbon bond cleavage of the dimeric structure, resulting in the monomeric units. We optimized the degradation conditions by screening the promoters and solvents, revealing that the use of silica gel in MeOH was effective. The monomeric pyranonaphthoquinones were also produced by a redox conversion. In addition, the pH chromism of the monomer as a photophysical property was evaluated.
アブラムシのもつ黄色色素が、シリカゲル存在下に２つのピラノナフトキノンへ変換されました。