(2S,3R,4R,5S,6R)-2-[4-(4-ethylbenzyl)-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl]-6-hydroxymethyltetrahydropyran-3,4,5-triol 、
对甲苯磺酰氯 在
2,6-二甲基吡啶 作用下,
生成 toluene-4-sulfonic acid (2R,3S,4R,5R,6S)-6-[4-(4-ethylbenzyl)-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl]-3,4,5-trihydroxytetrahydropyran-2-ylmethyl ester