Synthesis and Properties of Oligodeoxynucleotide Analogs with Bis(methylene) Sulfone Bridges
作者:Bernd Eschgfäller、Jürgen G. Schmidt、Marcel König、Steven A. Benner
DOI:10.1002/hlca.200390244
日期:2003.9
solution-phase synthesis was developed for the bis(methylene) sulfone-bridged oligodeoxynucleotide analogs (SNA) 5′-d(HOCH2-Tso2Tso2Tso2Cso2Tso2Tso2Tso2T-CH2SO)-3′ (35b) and 5′-d(HOCH2-Tso2Tso2Tso2Tso2Tso2Tso2Tso2T-CH2SO)-3′ (34c) (SO2 corresponds to CH2SO2CH2 instead of OP(O)(O−)(O). In these, the phosphodiester linkages are replaced by non-ionic bis(methylene) sulfone linkers. The general strategy involved
针对双(亚甲基)砜桥联的寡脱氧核苷酸类似物(SNA)5'-d(HOCH 2 -Tso 2 Tso 2 Tso 2 Cso 2 Tso 2 Tso 2 Tso 2 T-CH 2 SO )-3'(35b)和5'-d(HOCH 2 -Tso 2 Tso 2 Tso 2 Tso 2 Tso 2 Tso 2 Tso 2 T-CH 2 SO)-3'(34c)(SO 2对应于CH 2 SO2 CH 2代替OP(O)(O -)(O)。在这些中,磷酸二酯键被非离子型双(亚甲基)砜接头取代。一般策略涉及3',5'-bishomo- β -D-D-脱氧核糖核苷酸类似物的会聚偶联,所述类似物在6'-末端(C H 2 C(5'))作为溴化物或甲磺酸酯以及在C H 2 C( 3')位置为硫醇,所得硫醚被氧化为相应的砜。在端子C H 2处引入了单电荷八聚体的C(3')位置可增加其在水中的溶解度。在合成过程中,很明显,关