作者:Evans O. Onyango、Peter A. Jacobi
DOI:10.1080/00397911.2012.737078
日期:2013.10.18
Abstract The synthesis of a potential precursor 3 to demethoxyviridin (1b) is described. The centerpiece of this strategy was the conversion of the previously described dibromoolefin 6 to the masked alkyne β-hydroxyaldehyde 5 in a single step. Further elaboration then produced the alkyne oxazole 4, which on thermolysis, followed by in situ tautomerization and silylation, led directly to 3. Supplementary
摘要描述了去甲氧基病毒素 (1b) 的潜在前体 3 的合成。该策略的核心是在一个步骤中将先前描述的二溴烯烃 6 转化为掩蔽的炔烃 β-羟基醛 5。然后进一步细化产生了炔恶唑 4,它通过热解,然后进行原位互变异构和甲硅烷基化,直接导致 3。补充材料可用于本文。访问出版商的 Synthetic Communications® 在线版,了解完整的实验和光谱细节。图形概要