Synthesis of fused thiopyrano[2,3-d][1,3]thiazoles via hetero-Diels–Alder reaction related tandem and domino processes
作者:Nataliya Zelisko、Dmytro Atamanyuk、Yuri Ostapiuk、Andriy Bryhas、Vasyl Matiychuk、Andrzej Gzella、Roman Lesyk
DOI:10.1016/j.tet.2015.10.019
日期:2015.12
synthesized via hetero-Diels–Alder reaction related acylation-based tandem processes of 5-(ortho-hydroxybenzylidene)-substituted 4-thioxo-2-thiazolidinones with fumaric and maleic acid derivatives. The structurally similar rel-(5aR,5R,11bR) derivatives were synthesized via domino reaction of isorhodanine and (2E)-4-(2-formylphenoxy)but-2-enoates. The stereochemistry of cycloadditions was confirmed by
各种新颖rel-(5 R, 5 AR, 11点的bS)- 2,6-二氧代-3,5-一个,6,11 b -四氢- 2 Н,5 ħ -chromeno [4',3':4,5通过杂-Diels-Alder反应相关的5-(邻羟基苄叉基)取代的4-硫代氧杂-的酰化串联反应合成了] thiopyrano [2,3- d ] [1,3]噻唑-5-羧酸衍生物具有富马酸和马来酸衍生物的2-噻唑烷酮。结构相似的rel-(5 aR,5 R,11 bR)衍生物是通过异二十烷氨酸和(2 E)-4-(2-甲酰基苯氧基)丁-2-烯酸酯的多米诺反应合成的。通过NMR光谱和单晶X射线衍射分析证实了环加成物的立体化学。