5-[(N-Acetylglycyl)amino]pentyl, 5-[(N-acetylglycyl-α-methylalanyl)amino]pentyl, and 5-[(N-acetylglycyl-α-methylalanyl-α-methylalanyl)amino]pentyl anthraquinone-2-carboxylate underwent a photocyclization in an acetonitrile solution to produce efficiently large-sized ring-closure compounds as isolable products. In the photocyclization, high site-selectivity in the carbonyl groups of anthraquinone moiety was first observed.
5-[(N-乙酰基甘
氨酰)
氨基]戊基、5-[(N-乙酰基甘
氨酰-α-甲基丙
氨酰)
氨基]戊基和 5-[(N-乙酰基甘
氨酰-α-甲基丙
氨酰-α-甲基丙
氨酰)
氨基]戊基
蒽醌-2-
甲酸酯在
乙腈溶液中发生光环化反应,生成了高效的大尺寸闭环化合物作为可分离产物。在光环化过程中,首先观察到
蒽醌分子的羰基具有高度的位点选择性。