4-amino-6-p-chlorobenzyl-2-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-2,3-dihydro-3-thioxo-1,2,4-triazin-5(4H)-one 在
溶剂黄146 、 sodium nitrite 作用下,
以85%的产率得到6-p-chlorobenzyl-2-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-2,3-dihydro-3-thioxo-1,2,4-triazin-5(4H)-one