1-[(5R,6R,7R,9R)-4-氨基-6-(叔丁基-二甲基硅烷基)氧基-9-[(叔丁基-二甲基硅烷基)氧基甲基]-2,2-二氧代-1,8-二氧杂-2-硫杂螺[4.4]壬-3-烯-7-基]-5-甲基嘧啶-2,4-二酮 、
N-(6-bromohexyl)-2',3'-didehydro-2',3'-dideoxythymidine 在
potassium carbonate 作用下,
以
乙腈 为溶剂,
反应 3.0h,
以60%的产率得到3-[6-[3-[(5R,6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxopyrimidin-1-yl]hexyl]-1-[(2R,5S)-5-(hydroxymethyl)-2,5-dihydrofuran-2-yl]-5-methylpyrimidine-2,4-dione