THE AUTOMATED SYNTHESIS OF SULFUR-CONTAINING OLIGODEOXYRIBONUCLEOTIDES USING 3H-1,2-BENZODITHIOL-3-ONE 1,1-DIOXIDE AS A SULFUR-TRANSFER REAGENT

被引:256
作者
IYER, RP [1 ]
PHILLIPS, LR [1 ]
EGAN, W [1 ]
REGAN, JB [1 ]
BEAUCAGE, SL [1 ]
机构
[1] US FDA,CTR BIOL EVALUAT & RES,DIV BIOCHEM & BIOPHYS,8800 ROCKVILLE PIKE,BETHESDA,MD 20892
关键词
D O I
10.1021/jo00302a039
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Several polysulfides were tested as potential sulfur-transfer reagents during the automated synthesis of oligodeoxyribonucleoside phosphorothioates via the “deoxyribonucleoside phosphoramidite” approach. The thiosulfonate 3H-l,2-benzodithiol-3-one 1,1-dioxide (12) was particularly efficient as a sulfurizing reagent. A 0.2 M solution of 12 in acetonitrile converted the dinucleoside monophosphite triesters 13a-d into the corresponding phosphorothioates 15a-d within 30 s in near quantitative yields. This reagent led to rapid, efficient (stepwise yields of 99%), and reliable automated synthesis of phosphorothioate oligomers (28-mers) complementary to the mRNA of the HIV-1 rev gene, carrying either exclusively or a predetermined number of P(S) linkages. Additionally, oligomers exposed to prolonged treatment (24 h) with the sulfurizing reagent did not show any detectable modification of the nucleosidic bases. © 1990, American Chemical Society. All rights reserved.
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收藏
页码:4693 / 4699
页数:7
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