A series of alpha-(1 --> 5)-linked L-arabinofuranosyl di-, tetra-, hexa- and octameric derivatives were synthesized efficiently. The process was carried out in a regio- and stereoselective manner using perbenzoylated arabinofuranosyl trichloroacetimidates as glycosyl donors and unprotected or partially protected arabinofuranosides as glycosyl acceptors in the presence of a catalytic amount of trimethylsilyl
有效地合成了一系列由α-(1-> 5)连接的L-阿拉伯
呋喃糖基二,四,六和八聚体衍
生物。在催化量的三甲基甲
硅烷基
三氟甲磺酸盐(TMSOTf)存在下,使用过苯甲酰化的阿拉伯
呋喃糖基三
氯乙酰亚
氨酸酯作为糖基供体,以未保护的或部分保护的阿拉伯
呋喃糖苷作为糖基受体,以区域选择性和立体选择性的方式进行。