作者:Qingchao Liu、Wenhong Li、Tiantian Guo、Dong Li、Zhen Fan、Suihong Yan
DOI:10.1246/cl.2011.324
日期:2011.3.5
The first total synthesis of kaempferol-3-O-β-l-arabinopyranosyl-(1→4)-α-l-rhamnopyranoside-7-O-α-l-rhamnopyranoside (1), a 3,7-triglycosylflavone, which was isolated from the aerial parts of Fagonia taeckholmiana, was accomplished in 13 steps and 9.2% overall yield from commercially available kaempferol. We efficiently employed phase-transfer-catalyzed (PTC) glycosylation for the construction of phenol glycosides. Applying this approach will allow the preparation of derivatives for further study of structure–activity relationships (SAR).
成功完成了从商业可得的kaempferol出发,经过13步反应,总产率为9.2%的对卡马黄素-3-O-β-l-阿拉伯糖苷-(1→4)-α-l-鼠李糖苷-7-O-α-l-鼠李糖苷(1)的全合成,这是一种从法贡尼亚·塔克霍姆安那的地上部分分离出的3,7-三糖基黄酮。我们高效地采用了相转移催化(PTC)糖基化方法来构建酚糖苷。应用这一方法将能够制备衍生物,以便进一步研究结构-活性关系(SAR)。