Catalyst-free Mannich reaction of hydroxyanthraquinone: facile access to emodin Mannich bases and anthraoxazines
作者:Li-Ming Zhao、Li-Ming Zhang、Feng-Yan Ma、Xiang-Shan Wang、Hai-Shan Jin
DOI:10.1016/j.tetlet.2013.03.059
日期:2013.5
A simple and efficient method for derivatization of hydroxyanthraquinone natural product emodin through catalyst-free Mannichreaction is described. The method allows the modification of emodin skeleton at 2-position. This new derivatization strategy to emodin provides a clear advantage over traditional approaches, due to its easy operation and efficiency that does not involve the protection and deprotection