8-QUINOLINESULFONYL CHLORIDE: A NEW COUPLING AGENT IN OLIGORIBONUCLEOTIDE SYNTHESIS VIA PHOSPHOTRIESTER APPROACH
نویسندگان
چکیده
منابع مشابه
Synthesis of cyclic oligonucleotides by a modified phosphotriester approach.
Evidence will be presented to show that the allyl group is suitable for the protection of a 3'-terminal phosphodiester function. The latter will be demonstrated by the synthesis, via a phosphotriester approach, of two cyclic tetraribonucleotides [r(AAAA) and r(UAMe2UAMe2)], two cyclic hexadeoxyribonucleotides [d(CGCGCG) and d(TAAAAA)] and a cyclic octadeoxyribonucleotide [d(CGTGCGTG)].
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A rapid and convenient method for the synthesis of deoxyribooligonucleotides has been developed using the phosphotriester approach. The advantage of this methodology for work in solution was successfully demonstrated in synthesis of a number of DNA fragments up to 32-long. Adaptation of the presented method to solid-phase synthesis allows a pentadecamer to be assembled in 4-5 hours using dinucl...
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Analytical and experimental evidence will be presented to show that addition of a slight excess of 2-chlorophenyl-0,0-bis[1-benzotriazolyl]phosphate to a properly 2',5'-protected ribonucleoside gives an intermediate 3'-phosphotriester, which, after addition of a 2'-protected ribonucleoside, affords a dimer containing solely a 3'-5'-internucleotide linkage. The above phosphorylation procedure ha...
متن کاملAction of acid on oligoribonucleotide phosphotriester intermediates. Effect of released vicinal hydroxy functions.
When 2'-O-methoxytetrahydropyranyl-5'-O-(9-phenylxanthen-9-yl) uridylyl-(3'----5')-(2',3'-di-O-acetyluridine) 2-chlorophenyl ester (9) is treated with zinc bromide in dichloromethane-propan-2-ol (85:15 v/v) at room temperature, under stringently anhydrous conditions, the corresponding 5'-unblocked dinucleoside phosphate (10) is obtained in 86% isolated yield; however, when no special precaution...
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ژورنال
عنوان ژورنال: Chemistry Letters
سال: 1979
ISSN: 0366-7022,1348-0715
DOI: 10.1246/cl.1979.811