A Facile Synthetic Approach to 7-Deazaguanine Nucleosides via a Boc Protection Strategy
作者:Ruo-Wen Wang、Barry Gold
DOI:10.1021/ol9007537
日期:2009.6.4
to the preparation of 5-substituted 2-amino-7-((2R,4R,5R)-tetrahydro-4-hydroxy-5-(hydroxymethyl)furan-2-yl)-3H-pyrrolo[2,3-d]pyrimidin-4(7H)-one compounds has been developed by the condensation of ω-substituted aldehydes with 2,6-diaminopyrimidin-4(3H)-one, followed by Boc protection to afford the corresponding N2,N2,N7-tris-Boc-O4-t-Bu-5-substituted 2-amino-3H-pyrrolo[2,3-d]pyrimidin-4(7H)-one, which
制备5-取代的2-氨基-7-(((2 R,4 R,5 R)-四氢-4-羟基-5-(羟甲基)呋喃-2-基)-3 H-吡咯烷酮的有效途径[2,3 - d ]嘧啶-4(7 H)-one化合物是通过ω-取代的醛与2,6-二氨基嘧啶-4(3 H)-1的缩合反应,然后通过Boc保护得到的。相应的N 2,N 2,N 7 -tris-Boc- O 4 - t -Bu-5-取代的2-氨基-3 H-吡咯并[2,3- d ]嘧啶-4(7 H) -酮,其为适合于直接缩合用1-氯-2-脱氧-3,5-二- ø - p甲苯甲酰-α- d -赤-pentofuranose。这条路线,得到一种有效的合成向2-氨基-3- ħ吡咯并[2,3- d ]嘧啶-4(7 ħ) -酮,2-氨基-5-烷基-3- ħ吡咯并[2,3- d ] pyrimidin-4(7 H)-one和鸟嘌呤核苷。