作者:Ferdows Hilli、Jonathan M. White、Mark A. Rizzacasa
DOI:10.1021/ol0497943
日期:2004.4.1
formal total synthesis of the myxobacteria metabolite (-)-apicularen A (1) is described. The key step involved a novel acid-mediated transannular conjugate addition of the C13 hydroxyl into the alpha,beta-unsaturated ketone in either of the macrolactones 5a or 5b to provide the same trans-pyranone 4. Conversion of 4 into the known apicularen intermediate diol 3 completed the formal synthesis. [reaction:
描述了粘杆菌代谢产物(-)-apicularen A(1)的正式全合成。关键步骤涉及将大分子内酯5a或5b的α13,β-不饱和酮中的C13羟基通过新的酸介导的环戊二烯共轭加成,以提供相同的反式吡喃酮4.将4转化为已知的针状中间体二醇3完成正式合成。[反应:看文字]