[EN] NOVEL 6-SUBSTITUTED 7-DEAZAPURINES AND CORRESPONDING NUCLEOSIDES AS MEDICAMENTS<br/>[FR] NOUVELLES 7-DÉAZAPURINES 6-SUBSTITUÉES ET NUCLÉOSIDES CORRESPONDANTS EN TANT QUE MÉDICAMENTS
申请人:UNIV LEUVEN KATH
公开号:WO2021164848A1
公开(公告)日:2021-08-26
The present invention relates to the synthesis of 6-substituted 7-deazapurines and their corresponding nucleosides by coupling aryl or alkyl Grignard reagents with halogenated purine nucleosides in the presence of iron or an iron/copper mixture such as Fe(acac)3/Cul. The present invention also relates to pharmaceutical compositions comprising said compounds and the use of said pharmaceutical compositions to treat or prevent viral infections.
Provided are a novel compound or a salt thereof, and a pharmaceutical composition comprising the same, which selectively and strongly inhibit JAK3, exhibit an excellent activity for suppressing the growth of human peripheral blood monocytes and an excellent oral absorbability, and exhibits an activity of inhibiting IL-2-induced IFN-γ production in vivo. A compound represented by formula (I) [wherein X represents -CH=CH-, -NH-, a sulfur atom or an oxygen atom; and n represents an integer of 0 to 2], or a salt thereof.
to 6-substituted 7-deazapurine and the corresponding nucleosides by coupling aryl or alkyl Grignardreagents and halogenated purine nucleosides in the presence of Fe(acac)3/CuI is described. A series of 6-substituted 7-deazapurines and the corresponding nucleosides were obtained in medium to good yields. For the synthesis of modified nucleosides that will be the subject of biological testing, we propose