2-氯嘧啶 、 1,2,3,4-tetra-O-benzoyl-5-C-(tetrazol-5-yl)-α/β-D-xylopyranose 在
吡啶 作用下,
生成
1,2,3,4-tetra-O-benzoyl-5-C-([1,2,4]triazolo[1,5-a]pyrimidin-3-yl)-α-D-xylopyranose 、 1,2,3,4-tetra-O-benzoyl-5-C-([1,2,4]triazolo[1,5-a]pyrimidin-3-yl)-β-D-xylopyranose 、
1,2,3,4-tetra-O-benzoyl-5-C-([1,2,4]triazolo[4,3-a]pyrimidin-3-yl)-α-D-xylopyranose 、 1,2,3,4-tetra-O-benzoyl-5-C-([1,2,4]triazolo[4,3-a]pyrimidin-3-yl)-β-D-xylopyranose