Hypocrellin A与二苄胺和N-甲基苄胺的光化学反应 |
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作者单位: | 中国科学院兰州化学物理研究所,OSSO国家重点试验室,兰州,730000;云南大学应用化学系,昆明,650091;云南省第一人民医院检验科,昆明,650032 |
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基金项目: | 国家自然科学基金;国家自然科学基金 |
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摘 要: |
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关 键 词: | Hypocrellin A 二苄胺 N-甲基苄胺 光化学反应 |
Photochemical Reactions of Hypocrellin A with Dibenzylamine and N-methylbenzylamine |
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Authors: | Chen Yongkuan Li Cong Tai Hong Gu Kun Wang Hanqing Chen Yuanteng |
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Abstract: | In order to discuss the free radicals formation mechanism of Hypocrellin A(HA)with amino derivatives,the electron-spin resonance( ESR) spectroscopy was adopted to study the photochemistry on HA with dibenzyl amine(DBA)and N-methyl benzyl amine(NMBA),respectively. When HA with DBA or NMBA in chloroform solution was illuminated with visible light,singlet oxygen,semiquinone radical and oxynitride radical were formed depending on the condition of the solvent system containing the amino-substituted and solved oxygen. The signal intensity of oxynitride radical decreased with increasing the illumination time,and the signal intensity of semiquinone radical increased with increasing the illumination time. The oxynitride radical content was in inverse ratio with the semiquinone radical generated by being irradiated. In the aerobic system of chloroform solution containing DBA/HA,smiquinone radical was the main radical irradiated. The results indicated that HA induced amino derivatives into HA semiquinone radical. |
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Keywords: | Hypocrellin A,Diphenylamine,N-methyphenylamine,Photochemical reaction |
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