叔丁基二甲基氯硅烷 、
1-[(5S,6R,8R,9R)-4-amino-9-hydroxy-6-(hydroxymethyl)-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-bromopyrimidine-2,4-dione 在
4-二甲氨基吡啶 作用下,
以
乙腈 为溶剂,
反应 16.0h,
生成 <1-<2',5'-bis-O-(tert-butyldimethylsilyl)-β-D-ribofuranosyl>-5-bromouracil>-3'-spiro-5''-(4''-amino-1'',2''-oxathiole 2'',2''-dioxide) 、 N
6,4''-cyclo-<1-<2',5'-bis-O-(tert-butyldimethylsilyl)-β-D-ribofuranosyluracil>>-3'-spiro-5''-(4''-amino-1'',2''-oxathiole 2'',2''-dioxide)