作者:Ali Akhaouzan、Antonio Fernández、Ahmed I. Mansour、Esteban Alvarez、Ali Haidöur、Ramón Alvarez-Manzaneda、Rachid Chahboun、Enrique Alvarez-Manzaneda
DOI:10.1039/c3ob41290c
日期:——
The first synthesis of dasyscyphin B, an antitumoral metabolite obtained from the ascomycete Dasyscyphus niveus, has been achieved starting from commercial abietic acid. The key steps of the synthetic sequence are the diastereoselective α-methylation of a ketoaldehyde, followed by an intramolecular aldol condensation and the further Diels–Alder cycloaddition of a dienol ester. The procedure reported will allow the synthesis of related metabolites functionalized in the A ring.
我们首次以商用阿比特酸为起点,合成了从裸冠菊菌 Dasyscyphus niveus 中获得的抗肿瘤代谢物 dasyscyphin B。合成序列的关键步骤是酮醛的非对映选择性α-甲基化,然后是分子内醛醇缩合和二烯醇酯的进一步 Diels-Alder 环加成。所报告的过程将有助于合成 A 环上功能化的相关代谢物。