Synthesis of new 2-aminocarbohydrate-1,4-naphthoquinone derivatives promoted by ultrasonic irradiation
作者:Caroline F. J. Franco、Alessandro K. Jordão、Vitor F. Ferreira、Angelo C. Pinto、Maria C. B. V. de Souza、Jackson A. L. C. Resende、Anna C. Cunha
DOI:10.1590/s0103-50532011000100026
日期:——
In this report we describe the ultrasound-accelerated synthesis of new naphthoquinone derivatives 6a-f and 7a-c, which possess an aminocarbohydrate chain at the C-2 position of the quinone ring. This novel type of 1,4-naphthoquinone derivative has been synthesized under mild conditions by the reaction of 1,4-naphthoquinone (8a) or methoxylapachol (8b) with different aminocarbohydrates 9a-d. Characterization of all substances was confirmed by one- and two-dimensional nuclear magnetic resonance (NMR) techniques (¹H, 13C-APT, cosy-¹H vs. ¹H and HETCOR ¹J CH) and by high-resolution electrospray ionization mass spectrometry (HR ESI MS).
在本报告中,我们描述了新型萘醌衍生物6a-f和7a-c的超声加速合成,这些衍生物在醌环的C-2位置上具有氨基糖链。这种新型1,4-萘醌衍生物在温和条件下通过1,4-萘醌(8a)或甲氧基拉帕醇(8b)与不同氨基糖9a-d反应合成。所有化合物的表征通过一维和二维核磁共振技术(NMR)(¹H, 13C-APT, cosy-¹H vs. ¹H 和 HETCOR ¹J CH)以及高分辨率电喷雾电离质谱(HR ESI MS)确认。