作者:Ramdas Vidya、MariJean Eggen、Sajiv K. Nair、Gunda I. Georg、Richard H. Himes
DOI:10.1021/jo0302197
日期:2003.12.1
to the synthesis of the macrolide core of the cryptophycins has been developed. A novel macrolactonization utilizing a reactive acyl-beta-lactam intermediate incorporates the beta-amino acid moiety within the 16-membered macrolide core. This modular approach, involving a cyanide-initiated acyl-beta-lactam ring opening followed by cyclization, was successfully applied to the total synthesis of cryptophycin-24
已经开发了一种高效简明的隐藻毒素大环内酯核心合成方法。利用反应性酰基-β-内酰胺中间体的新型大环内酯化在16元大环内酯核心内结合了β-氨基酸部分。这种涉及氰化物引发的酰基-β-内酰胺开环并随后环化的模块化方法已成功应用于隐藻素-24的全合成。该策略还用于有效合成6,6-二甲基取代的脱氯隐霉素52。在这种情况下,通过催化过程实现了双取代的2-氮杂环丁酮的氰化物引发的开环,随后进行大内酯化。