L-Proline and related chiral heterocyclic amino acids as scaffolds for the synthesis of functionalized 2-amino-1,3-selenazole-5-carboxylates
作者:Vida Malinauskienė、Aistė Kveselytė、Karolina Dzedulionytė、Aurimas Bieliauskas、Saulius Burinskas、Frank A. Sløk、Algirdas Šačkus
DOI:10.1007/s10593-018-2291-1
日期:2018.4
series of methyl 2-amino-1,3-selenazole-5-carboxylates possessing a chiral pyrrolidin-2-yl, piperidin-2-yl, or piperidin-3-yl substituent at the C-4 atom of the heteroaromatic ring was designed and synthesized. In the first stage of the synthesis, the carboxylic acid functional group of the L-proline or related chiral heterocyclic amino acid was converted to the corresponding β-keto ester, which was
在杂芳族环的C-4原子上具有手性吡咯烷-2-基,哌啶-2-基或哌啶-3-基取代基的一系列2-氨基-1,3-硒基-5-羧酸甲酯是设计和合成。在合成的第一阶段,将L-脯氨酸或相关的手性杂环氨基酸的羧酸官能团转化为相应的β-酮酯,然后将其用N-溴代琥珀酰亚胺进行α-溴化。α-溴化的β-酮酯与硒代脲的随后反应得到目标2-氨基-1,3-硒代苯并5-羧酸甲酯。通过1 H,13 C和77 Se NMR光谱和HRMS证实了新型杂环化合物的结构。