Total synthesis and absolute stereochemistry of (+)-batzellaside B and its C8-epimer, a new class of piperidine alkaloids from the sponge Batzella sp.
作者:Jolanta Wierzejska、Manami Ohshima、Toshiyasu Inuzuka、Tetsuya Sengoku、Masaki Takahashi、Hidemi Yoda
DOI:10.1016/j.tetlet.2011.01.018
日期:2011.3
The first total synthesis of (+)-batzellaside B and its C8-epimer was completed from a known l-arabinose-derived tribenzyl ether in 22 steps with overall yields of 3.9% and 5.4%, respectively. The absolute configuration of (+)-batzellaside B was unambiguously determined to be 1S,3S,4S,5R,8S by the Mosher analysis of a synthetic intermediate prepared through a separate route.
(+)-巴兹拉糖苷B及其C8-顶基的第一次总合成是由22个步骤,由已知的1-阿拉伯糖衍生的三苄基醚完成的,总产率分别为3.9%和5.4%。(+)的绝对构型- batzellaside B在明确地确定为1 S, 3 S, 4 S, 5 R, 8小号通过一个单独的路线的合成中间体制备的莫舍分析。