Biomimetic Synthesis of Resorcylate Natural Products Utilizing Late Stage Aromatization: Concise Total Syntheses of the Marine Antifungal Agents 15G256ι and 15G256β
作者:Ismael Navarro、Jean-François Basset、Séverine Hebbe、Sarah M. Major、Thomas Werner、Catherine Howsham、Jan Bräckow、Anthony G. M. Barrett
DOI:10.1021/ja803445u
日期:2008.8.1
sequential reaction with potassium carbonate and methanolic hydrogen chloride to give resorcylate esters. The reaction was applied in the total synthesis of the marine antifungal agents 15G256beta (1), 15G256iota (2), and 15G256pi (3) and the mycotoxin S-(-)-zearalenone (4).
Diketo-1,3-dioxin-2-ones 在 110 摄氏度的甲苯中加热后经历了逆狄尔斯-阿尔德反应,生成 alpha、gamma、-triketo-ketenes。这些用醇捕获以提供 2,4,6-三酮羧酸酯,其通过与碳酸钾和甲醇氯化氢的顺序反应顺利芳构化以得到间苯二酸酯。该反应用于海洋抗真菌剂 15G256beta (1)、15G256iota (2) 和 15G256pi (3) 和霉菌毒素 S-(-)-玉米赤霉烯酮 (4) 的全合成。