Year 2007, Month 6 (Section Full Articles, Page 1249)
Chemical modification of usnic acid 2.* Reactions of (+)-usnic acid with amino acids
O. A. Luzina, M. P. Polovinka, N. F. Salakhutdinov, and G. A. Tolstikov
The condensation of amino acids with (+)-usnic acid involves the 2-positioned acetyl group of the latter and gives derivatives containing an enamine fragment.
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