Synthesis, structural characterization and cytotoxic activity of heterocyclic compounds containing the furoxan ring
作者:Alexander S. Kulikov、Alexander A. Larin、Leonid L. Fershtat、Lada V. Anikina、Sergey A. Pukhov、Sergey G. Klochkov、Marina I. Struchkova、Anna A. Romanova、Ivan V. Ananyev、Nina N. Makhova
DOI:10.24820/ark.5550190.p010.229
日期:——
A direct approach to the synthesis of previously unknown 1H-1,2,3-triazolylfuroxans, involving nucleophilic substitution of the nitro group in nitrofuroxans followed by catalytic [3+2] cycloaddition of intermediate azidofuroxans to 1,3-ketoesters, is reported. The scope of the triazolylfuroxans was additionally diversified through a number of transformations of the functional groups attached to the
报道了一种合成以前未知的 1H-1,2,3-三唑基呋喃的直接方法,包括对硝基呋喃中硝基进行亲核取代,然后将中间体叠氮呋喃催化 [3+2] 环加成生成 1,3-酮酯。通过连接到 1,2,3-三唑环上的官能团的大量转化,三唑基呋喃的范围进一步多样化。研究了新合成的三唑基呋喃和先前报道的杂芳基呋喃的细胞毒活性。使用分光光度计技术通过格里斯反应测量所选合成杂芳基呋喃的 NO 供体能力。
Regioselective Synthesis of NO-Donor (4-Nitro-1,2,3-triazolyl)furoxans via Eliminative Azide–Olefin Cycloaddition
作者:Irina A. Stebletsova、Alexander A. Larin、Ivan V. Ananyev、Leonid L. Fershtat
DOI:10.3390/molecules28196969
日期:——
A facile and efficient method for the regioselective [3 + 2] cycloaddition of 4-azidofuroxans to 1-dimethylamino-2-nitroethylene under p-TSA catalysis affording (4-nitro-1,2,3-triazolyl)furoxans was developed. This transformation is believed to proceed via eliminative azide–olefin cycloaddition resulting in its complete regioselectivity. The developed protocol has a broad substrate scope and enables
Ionic liquid-mediated synthesis of (1H-1,2,3-triazol-1-yl)furoxans by [3 + 2] cycloaddition of azidofuroxans to acetylenes
作者:Leonid L. Fershtat、Salavat S. Ashirbaev、Alexander S. Kulikov、Vadim V. Kachala、Nina N. Makhova
DOI:10.1016/j.mencom.2015.07.007
日期:2015.7
The [3 + 2] cycloaddition of azidofuroxans to internal and terminal acetylenes was found to occur only in ionic liquids on heating and afford (1H-1,2,3-triazol-1-yl)furoxans in moderate to good yields. The reaction with terminal acetylenes proceeds with high regio-selectivity.
KUNAI, ATSUTAKA;DOI, TAKANORI;NAGAOKI, TAKASHI;YAGI, HIROFUMI;SASAKI, KAZ+, BULL. CHEM. SOC. JAP., 63,(1990) N, C. 1843-1844