- Synthetic Method of Brivudine
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(CAS NO.: ), with its systematic name of (E)-5-(2-Bromovinyl)-2'-deoxyuridine, could be produced through many synthetic methods.
Following is one of the reaction routes:
2-Deoxy-3,5-di-O-(phenylacetyl)-beta-D-erythro-pentofuranosyl chloride (I) is condensed with 2,4-bis-O-(trimethylsilyl)-5(E)-(2-bromovinyl)uracil (II) in acetonitrile (Lewis acid catalyst), or in CHCl3-pyridine (Bronsted acid catalyst), to produce 3,5-di-O-(phenylacetyl)-5(E)-(2-bromovinyl)-2-deoxyuridine (III) and its anomer that is eliminated by TLC (silicagel). Finally, (III) is treated with sodium methoxide in methanol.
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