Total Synthesis and Antifungal Activity of Palmarumycin CP17 and Its Methoxy Analogues
作者:Ruina Wang、Guoyue Liu、Mingyan Yang、Mingan Wang、Ligang Zhou
DOI:10.3390/molecules21050600
日期:——
Total synthesis of naturally occurring spirobisnaphthalene palmarumycin CP17 and its methoxy analogues was first achieved through Friedel-Crafts acylation, Wolff-Kishner reduction, intramolecular cyclization, ketalization, benzylic oxidation, and demethylation using the inexpensive and readily available methoxybenzene, 1,2-dimethoxybenzene and 1,4-dimethoxybenzene and 1,8-dihydroxynaphthalene as raw
天然存在的螺双萘帕玛霉素 CP17 及其甲氧基类似物的全合成首先通过 Friedel-Crafts 酰化、Wolff-Kishner 还原、分子内环化、缩酮化、苄基氧化和脱甲基化实现,使用廉价且容易获得的甲氧基苯、1,2-二甲氧基苯和以1,4-二甲氧基苯和1,8-二羟基萘为原料。在环境温度下用 (CH3)3SiI 去甲基化导致环 A 芳构化和缩醛裂解,产生联萘醚。评估了这些螺二萘衍生物的抗真菌活性,结果表明 5 和 9b 对 P. piricola 的 EC50 值分别为 9.34 µg/mL 和 12.35 µg/mL。