Nucleotides. Part LIII. 6-Aminohexanoyl-linked conjugates of monomeric and trimeric cordycepin
作者:Marita Wasner、Wolfgang Pfleiderer、Robert J. Suhadolnik、Susan E. Horvath、Ning Kon、Ming-Xu Guan、Earl E. Henderson、Martin E. Adelson
DOI:10.1002/hlca.19970800405
日期:1997.6.30
To improve cell permeability, monomeric 3′-deoxyadenosine (cordycepin) and antivirally active trimeric 3′-deoxyadenylyl-(2′–5′)-3′-deoxyadenylyl-(2′–5′)-3′-deoxyadenosine (2′–5′)d3 (A-A-A); (cordycepin-trimer core) were modified at the 2′-O- or 5′-O-position by myristic, cholic, and folic acid = tetradecanoic, 3α, 7α, 12α -trihy-droxy-5β-cholan-24-oic, and N-4-[(2-amino-3,4-dihydro-4-oxopteridin
为了提高细胞通透性,单体3'-脱氧腺苷(cordycepin)和抗病毒活性三聚体3'-脱氧腺苷基-(2'-5')-3'-脱氧腺苷基-(2'-5')-3'-脱氧腺苷(2' –5′)d 3(AAA);(虫草素三聚体核心)在所述2'-修饰ø -或5'- ø由肉豆蔻酸,胆酸,和叶酸=十四烷,3α,7α位上,12α-trihy-羟基- 5β胆-24- ,和分别通过6-氨基六酰基间隔基连接的N- 4-[((2-氨基-3,4-二氢-4-氧蝶呤-6-6基)甲基]氨基}苯甲酰基} -L-谷氨酸。三聚体的离析物的合成21,27,和28通过亚磷酰胺化学反应,使用β-消除的2-(4-硝基苯基)乙基(npe),2-(4-硝基苯基)乙氧基羰基(npeoc)和(9 H-芴-9-基)甲氧基羰基(fmoc)基团进行允许在非质子传递溶剂中用DBU进行脱保护而不会损害与酯结合的结合物,得到产物24 – 26和31 – 33