2,4-喹唑啉二酮 、
methyl 5-O-tert-butyldiphenylsilyl-2,3-dideoxy-3-iodo-D-threo-pentofuranoside 在
硫酸氢铵 、
三氟甲磺酸三甲基硅酯 、
六甲基二硅氮烷 作用下,
生成 5-O-tert-butyldiphenylsilyl-2,3-dideoxy-3-iodo-1-O-methyl-1-C-(1,2,3,4-tetrahydro-2,4-dioxoquinolin-1-yl)-D-threo-pentitol 、 1-(5-O-tert-butyldiphenylsilyl-2,3-dideoxy-3-iodo-α-D-threo-pentofuranosyl)-2,4(1H,3H)-quinazolinedione 、
1-(5-O-tert-butyldiphenylsilyl-2,3-dideoxy-3-iodo-β-D-threo-pentofuranosyl)-2,4(1H,3H)-quinazolinedione