New route for the synthesis of 2-thiouracil analogues of 3?-azido-2?,3?-dideoxy nucleosides
作者:Abdel Moneim El-Torgoman、Mohammed S. Motawia、Ulla Kj�rsgaard、Erik B. Pedersen
DOI:10.1007/bf00810948
日期:1992.4
Reaction of 3-azido-5-O-tert-butyldiphenylsilyl-2,3-dideoxy-D-erythro-pentofuranoside(5) with silylated 2-thiouracil and 5-alkoxy-2-thiouracils in the presence of trimethylsilyl trifluoromethanesulfonate afforded an anomeric mixture of the corresponding 3'-azido-2',3'-dideoxy-2-thiouridine derivatives with the alpha-anomer as the main product. Deprotected nucleosides were obtained by treatment with tetrabutylammonium fluoride.
Chemistry and structure of modified uridines in the anticodon, wobble position of transfer RNA are determined by thiolation
作者:Hanna Sierzputowska-Gracz、Elzbieta Sochacka、Andrzej Malkiewicz、Kenneth Kuo、Charles W. Gehrke、Paul F. Agris