2?-Deoxy-?-D-ribofuranosides ofN6-Methylated 7-Deazaadenine and 8-Aza-7-deazaadenine: Solid-phase synthesis of oligodeoxyribonucleotides and properties of self-complementary duplexes
作者:Frank Seela、Klaus Kaiser、Uwe Bindig
DOI:10.1002/hlca.19890720503
日期:1989.8.9
e N9-(2′-deoxy-β-D-ribofuranoside) (2) as well as of 8-aza-7-deaza-N6-methyladenine N8− and N9−(2′-deoxyribofuranosides) (3 and 4, resp.) are described. A 4,4′-dimeth-oxylritylation followed by phosphitylation yielded the methyl phosphoramidites 12–14. They were employed together with the phosphoramidite of 2′-deoxy-N6v-methyladenosine (15) in automated solid-phase oligonucleotide synthesis. Alternating
7- deaza-的合成Ñ 6 -methyladenine Ñ 9 - ((2'-脱氧β-d呋喃核糖苷)2)以及8-氮杂-7- deaza- Ñ 6 -methyladenine Ñ 8 -和Ñ描述了9-(2'-脱氧核糖呋喃糖苷)(分别为3和4)。先进行4,4'-二甲基-羟基化,然后再进行磷酸化,生成甲基亚磷酰胺12-14。它们与2'-脱氧-N 6 v-甲基腺苷的亚磷酰胺(15)进行自动化固相寡核苷酸合成。衍生自d(AT)6或d(ATGCAGA * -TCTGCA)但包含一个甲基化的吡咯并[2,3- d ]嘧啶或吡唑并[3,4- d ]嘧啶部分替代N 6-的交替或回文寡核苷酸。合成了甲基氨基嘌呤(A *)。熔解实验表明,通过掺入8-aza-7-deaza-2'- deoxy - N 6 -meihyladenosine可逆转2'-脱氧-N 6-甲基腺苷的N 6 -Me基团引起的双链失稳,而7-