Stannylation of cholesteryl α-L-arabinopyranoside with Bu2 SnO followed by p-coumaroylation gave the 3'-o-p-coumarate, which on heating in pyridine rearranged to the 4'-o-p-coumarate. Similarly inundoside-A was converted to its 3'-o-p-coumarate and then 4'-o-p-coumarate, which were identical with inundoside-G and inundoside-D1, respectively, thus providing their total syntheses.
                                    胆固醇α-
L-阿拉伯糖苷与Bu2 SnO的斯坦尼化,然后进行对香豆酰化,得到3'-o-对
香豆酸,在
吡啶中加热后,重新排列为4'-o-对
香豆酸。同样,inundoside-A被转化为3'-o-对
香豆酸,然后转化为4'-o-对
香豆酸,分别与inundoside-G和inundoside-D1相同,从而提供了它们的完全合成。