作者:Mikkel F. Jacobsen、John E. Moses、Robert M. Adlington、Jack E. Baldwin
DOI:10.1021/ol047594l
日期:2005.2.1
The total synthesis of the nitrophenyl pyrones, (+/-)-aureothin and (+/-)-N-acetylaureothamine, starting from known 2-ethyl-6-methoxy-3,5-dimethyl-4H-pyran-4-one are described. The key steps involved in the synthesis are the construction of the tetrahydrofuran motif using a palladium-catalyzed cycloaddition and the ruthenium-catalyzed cross-metathesis reaction of an alkenyl boronic ester. [reaction:
从已知的2-乙基-6-甲
氧基-3,5-二
甲基-4H-
吡喃-4-酮开始,
硝基苯基
吡喃酮,(+/-)-
金黄色素和(+/-)-
N-乙酰基
金胺的总合成被描述。合成中涉及的关键步骤是使用
钯催化的环加成反应构建
四氢呋喃基序,以及
烯基
硼酸酯的
钌催化的交叉复分解反应。[反应:看文字]