methyl β-D-arabinopyranoside and methyl β-D-ribofuranoside protected respectively as 3,4- and 2,3-O-methyleneacétals have been used as chiral templates in the asymmetric Diels-Alder reaction with cyclopentadiene. Sugar moieties are very stable towards Lewis acids and the arabinose derivative is very efficient for asymmetric induction.
                                    在分别与
环戊二烯发生不对称Diels-Alder反应中,分别被保护为3,4-和2,3-O-亚
甲基丙烯酸的β-D-阿拉伯
呋喃糖苷甲基和β-D-
呋喃核糖甲基丙烯酸酯已被用作手性模板。糖部分对
路易斯酸非常稳定,
阿拉伯糖衍
生物对于不对称诱导非常有效。