Process for the preparation of pyrimidine nucleosides
申请人:THE WELLCOME FOUNDATION LIMITED
公开号:EP0465164A1
公开(公告)日:1992-01-08
A process is provided for the preparation of a compound of formula (I) or a salt thereof:
wherein R¹ is hydrogen or a C₁₋₄ alkyl, comprising reacting a compound of formula II:
with an agent serving to introduce the alkynyl radical of formula -C≡CR¹ (wherein R¹ is as described above) at the 5-position of the pyrimidine base, the reaction being carried out in the presence of an N₁₋₆ alkylmorpholine, wherein said alkyl moiety being optionally substituted by an alkoxy or halogen group; and optionally thereafter converting into a salt.
The present invention provides oligomers which are specifically hybridizable with a selected sequence of RNA or DNA wherein at least one of the nucleoside moieties of the oligomer is modified to include a guanidinium group. These oligomers are useful for diagnostic, therapeutic and investigative purposes.