Tubercidin. Its Conversion into 5′-Deoxytubercidin
作者:Kentaro Anzai、Masanao Matsui
DOI:10.1246/bcsj.46.618
日期:1973.2
Tubercidin (I) was converted into 5′-deoxytubercidin (IV). Mesylation of 2′,3′-O-isopropylidenetubercidin (IX) afforded-2′,3′-O-isopropylidene-5′-O-mesyltubercidin (XVIII), which in situ was treated with benzoyl chloride. The product, N6,N6-dibenzoyl-2′,3′-O-isopropylidene-5′-O-mesyltubercidin (XXII), was converted into N6,N6-dibenzoyl-5′-deoxy-5′-iodo-2′,3′-O-isopropylidenetubercidin (XXIV). Catalytic hydrogenation of XXIV afforded N6-benzoyl-5′-deoxy-2′,3′-O-isopropylidenetubercidin (XXVII). 5′-Deoxytubercidin (IV) was obtained on debenzoylation and deacetonation of XXVII.
抗结核素(I)被转化为5'-脱氧抗结核素(IV)。2′,3′-O-异丙烯基乙基抗结核素(IX)的甲磺酸化反应生成-2′,3′-O-异丙烯基-5′-O-甲磺酸抗结核素(XVIII),随后在原位与苯甲酰氯反应。产物N6,N6-二苯甲酰-2′,3′-O-异丙烯基-5′-O-甲磺酸抗结核素(XXII)被转化为N6,N6-二苯甲酰-5'-脱氧-5'-碘-2′,3′-O-异丙烯基抗结核素(XXIV)。XXIV的催化加氢反应生成N6-苯甲酰-5'-脱氧-2′,3′-O-异丙烯基抗结核素(XXVII)。通过去苯甲酰化和去乙酮化反应得到5'-脱氧抗结核素(IV)。