Prebiotic selection and assembly of proteinogenic amino acids and natural nucleotides from complex mixtures
作者:Saidul Islam、Dejan-Krešimir Bučar、Matthew W. Powner
DOI:10.1038/nchem.2703
日期:2017.6
permits ribonucleotide synthesis, even from complex sugar mixtures. Remarkably, aminal formation also overcomes the thermodynamically favoured isomerization of glyceraldehyde into dihydroxyacetone because only the aminal of glyceraldehyde separates from the equilibrating mixture. Finally, we show that aminal formation provides a novel pathway to amino acids that avoids the synthesis of the non-proteinogenic
The CSIC Reaction on Substrates Derived From Aldehydes
作者:José L Marco、Simon T Ingate、Carlos Jaime、Ivan Beá
DOI:10.1016/s0040-4020(00)00124-1
日期:2000.4
The Carbanion-mediated Sulfonate (Sulfonamide) Intramolecular Cyclization reaction (CSIC reaction) on conveniently functionalized cyanoalkylsulfonates and cyanoalkylsulfonamides derivedfromaldehydes is possible and gives the new heterocyclic ring systems 5-alkyl-4-amino-5H-1,2-oxathiole 2,2-dioxide and 3-alkyl-5H-4-amino-5-cyano-5H-2,3-dihydroisothiazole 1,1-dioxide in good yield.
在方便官能化的氰基烷基磺酸盐和衍生自醛的氰基烷基磺酰胺上进行碳负离子介导的磺酸盐(磺酰胺)分子内环化反应(CSIC反应),可以得到新的杂环体系5-烷基-4-氨基-5 H -1,2-恶唑2 ,2-二氧化物和3-烷基-5 H -4-氨基-5-氰基-5 H -2,3-二氢异噻唑1,1-二氧化物的收率很好。