Total Synthesis of the Proposed Structure of the Anthrapyran Metabolite δ-Indomycinone
作者:Lutz F. Tietze、Ramakrishna Reddy Singidi、Kersten M. Gericke
DOI:10.1002/chem.200700823
日期:——
diastereoselective alkylation of enantiomerically pure dioxolanone 8. The reported synthetic approach has the advantage of high yields, excellent selectivity and a remarkable general applicability for the total synthesis of other anthrapyran natural products. The spectroscopic data obtained for the synthetic compounds 2 and 36 are not in agreement with those reported for the natural product, and therefore
已经完成了所提出的δ-茚虫酮结构的第一个全合成。关键步骤涉及溴萘甲醌(6)和1-甲氧基-3-甲基-1-三甲基甲硅烷氧基-1,3-丁二烯(7)的Diels-Alder反应,以进入蒽醌骨架,代表其他天然的共同结构单元。出现的蒽醌抗生素,蒽醌的区域选择性溴化(14)和对映体纯的二氧戊环酮8的高度非对映选择性烷基化。据报道,这种合成方法具有高收率,优异的选择性和对其他蒽醌类天然产物全合成的显着通用性。合成化合物2和36的光谱数据与天然产物的光谱数据不一致,