作者:Filip Bihelovic、Ivanka Karadzic、Radomir Matovic、Radomir N. Saicic
DOI:10.1039/c3ob40692j
日期:——
Enantioselective synthesis of a marine antibiotic (−)-atrop–abyssomicin C was accomplished in 21 steps, in 1.8% overall yield (4%, based on the recovered starting material). The key steps of the synthesis are the formation of the functionalized cyclohexane core by an organocatalyzed Tsuji–Trost reaction, the formation of a tricyclic spirotetronate unit by a gold-catalyzed reaction sequence and the
对映体选择性合成海洋抗生素(-)-atrop-Abyssomicin C分21步完成,总收率为1.8%(基于回收的原料为4%)。合成的关键步骤是通过有机催化的Tsuji-Trost反应形成官能化的环己烷核芯,通过金催化的反应序列形成三环螺环膦酸酯单元,以及由Nozaki-Hiyama进行的高效十一元闭环反应–基石反应。生物测试表明,所有的阿霉素衍生物均具有较强的抗菌活性。甲氧西林抗金黄色葡萄球菌菌株;然而,它们也被证明对恶性和正常体细胞均具有细胞毒性。