Total Synthesis of Trioxacarcins DC-45-A1, A, D, C, and C7″-<i>epi</i>-C and Full Structural Assignment of Trioxacarcin C
作者:K. C. Nicolaou、Quan Cai、Hongbao Sun、Bo Qin、Shugao Zhu
DOI:10.1021/jacs.5b12687
日期:2016.3.9
Trioxacarcins DC-45-A2, DC-45-A1, A, D, C7″-epi-C, and C have been synthesized through stereoselective strategies involving BF3·Et2O-catalyzed ketone-epoxide opening and gold-catalyzed glycosylation reactions, and the full structural assignment of trioxacacin C was deciphered via the syntheses of both of its C7″ epimers. The gathered knowledge sets the foundation for the design, synthesis, and biological
Trioxacarcins DC-45-A2、DC-45-A1、A、D、C7″-epi-C 和 C 已通过立体选择性策略合成,包括 BF3·Et2O 催化的酮环氧化物开环和金催化的糖基化反应,以及三氧沙星 C 的完整结构分配是通过其两个 C7″差向异构体的合成破译的。收集到的知识为这些天然产物的类似物的设计、合成和生物学评估奠定了基础,这些天然产物的类似物作为抗体-药物偶联物和其他靶向和个性化癌症化疗的递送系统的潜在有效载荷。