Total Synthesis of Amphidinolide X and Its 12<i>Z</i>-Isomer by Formation of the C12-C13 Trisubstituted Double Bond via Ring-Closing Metathesis
作者:Wei-Min Dai、Jinlong Wu、Yile Chen、Jian Jin、Jianshu Lou、Qiaojun He
DOI:10.1055/s-2008-1077885
日期:——
Amphidinolide X, a 16-membered cytotoxic macrodiolide, and its 12Z-isomer have been synthesized via ring-closing metathesis (RCM) for assembling the C12-C13 trisubstituted double bond. A 29:71 E/Z mixture was obtained from the seco substrate appended with a bulky C8-ODPS group in 50-65% combined yields by using 20 mol% of the second-generation Grubbs initiator and the corresponding indenylidene ruthenium complex. Amphidinolide X and 12Z-isomer exhibit similar cytotoxicity (IC50: 7.6-13.9 µg/mL) against A549, KB, and HL60 cell lines.