Biomimetic synthesis of marine sponge metabolite spiculoic acid A and establishment of the absolute configuration of the natural product
作者:James E. D. Kirkham、Victor Lee、Jack E. Baldwin
DOI:10.1039/b607035c
日期:——
The synthesis of spiculoic acid A (1) using a biomimetic Diels-Alder reaction is described; comparison of the specific rotation of the natural and synthetic material revealed that the enantiomer of the natural product has been synthesized.
previously published total synthesis of two highly active anti-inflammatorymacrolactones from the oxacyclododecindione family (J. Tauber, M. Rohr, T. Walter, G. Erkel and T. Opatz, Org. Biomol. Chem., 2015, 13, 7813–7821), seven new representatives of this compound class were prepared. Substitution of the 14-hydroxy group in oxacyclododecindione with a methyl substituent provided a readily accessible
通过改变我们之前发表的来自氧杂环十二烷二酮家族的两种高活性抗炎大环内酯的全合成(J. Tauber、M. Rohr、T. Walter、G. Erkel 和 T. Opatz,Org. Biomol. Chem.,2015,13 , 7813–7821), 制备了该化合物类别的七个新代表。用甲基取代基取代 oxacyclododecindione 中的 14-羟基提供了一种易于获得的非天然类似物,其具有与几乎无法获得的天然产物相似的药理学性质。由于物质的可生产量因此不再受到低发酵产率的限制,因此在体内广泛研究首次成为可能。基于这一发现,通过改变卤素原子对构效关系进行了进一步研究,结果表明氯取代基的交换或省略导致结合亲和力显着降低。此外,发现关键和特征性脂肪族侧链在 C-10 的延长也增加了感兴趣的生物测定中的 IC 50值。