Synthesis of Natural (−)-Antrocin and Its Enantiomer via Stereoselective Aldol Reaction
作者:Venkatachalam Angamuthu、Dar-Fu Tai
DOI:10.3390/molecules25040831
日期:——
The total synthesis of (−)-antrocin and its enantiomer are presented. Antrocin (−)-1 is an important natural product which acts as an antiproliferative agent in a metastatic breast cancer cell line (IC50: 0.6 μM). The key features of this synthesis are: (a) selective anti-addition of trimethylsilyl cyanide (TMSCN) to α,β-unsaturated ketone; (b) resolution of (±)-7 using chiral auxiliary L-dimethyl
介绍了 (-)-antrocin 及其对映异构体的全合成。Antrocin (-)-1 是一种重要的天然产物,在转移性乳腺癌细胞系中充当抗增殖剂(IC50:0.6 μM)。该合成的主要特征是: (a) 三甲基氰化硅烷 (TMSCN) 选择性反加成到 α,β-不饱和酮;(b) 使用手性助剂 L-酒石酸二甲酯通过形成环状缩酮非对映异构体,然后进行简单的柱色谱分离和酸水解来拆分 (±)-7;(c) (+)-12 与单体甲醛和氯铬酸吡啶 (PCC) 氧化的底物控制立体选择性羟醛缩合,用于合成 (-)-14 中的必需内酯核;(d) 在最终步骤中羰基的非碱性 Lombardo 烯化以产生 (-)-antrocin。此外,