作者:Filip S. Ekholm、Gyula Schneider、János Wölfling、Reko Leino
DOI:10.1016/j.steroids.2011.02.010
日期:2011.5
to the synthesis and coupling of their shared glycone, scillabiose, to a model steroid. A convergent coupling strategy utilizing a scillabiose-based glycosyl donor was devised for the glycosylation. This convergent approach is appealing due to its high efficiency and simple deprotection procedure and may find further use in total synthesis of naturally occurring saponins and related compounds sharing
Hellebrin和transvaalin是两种具有生物活性的天然皂苷。在本文中,我们描述了一种高产途径,可以合成和共享它们共享的甘氨酸,螺旋藻二糖和模型类固醇。设计了利用基于scillabiose的糖基供体的收敛偶联策略进行糖基化。该收敛方法因其高效和简单的脱保护程序而具有吸引力,并且可能在天然皂苷和共有相同甘氨酸的相关化合物的全合成中找到进一步的用途。由于该甘氨酸在自然界中广泛存在,因此提供了本文制备的所有化合物的完整NMR光谱表征,作为参考材料。此外,糖基化是由螺旋藻二糖的单糖成分进行的,