8-Azaadenine 2?,3?-Dideoxyribonucleosides: Synthesisvia 1,2,3- triazolo[4,5-d]pyrimidinyl anions
作者:Frank Seela、Karin Mersmann
DOI:10.1002/hlca.19920750615
日期:1992.10.2
The 8-azaadenine 2′,3′-dideoxyribonucleosides 1–3 were synthesized via glycosylation of the 7-methoxy- or 7-amino-3H-1,2,3-triazolo[4,5-d]pyrimidinyl anion with 5-O-[(tert-butyl)dimethylsilyl]-2,3-dideoxy-D- glycero-pentofuranosyl choride (6). As 6 was an anomeric mixture, anomeric glycosylation products were formed. Moreover, three regioisomers (N1, N2, and N3) were obtained in the case of the methoxy
在8-氮杂腺嘌呤2',3'-dideoxyribonucleosides 1-3合成通过的7-甲氧基-或7-氨基-3-糖基化ħ三唑并-1,2,3 [4,5- d ]嘧啶基阴离子与5 - ö - [(叔丁基)二甲基甲硅烷基] -2,3-二脱氧D-甘油基-pentofuranosyl酰氯(6)。由于6是异头混合物,所以形成了异头糖基化产物。此外,在甲氧基化合物的情况下,获得了三个区域异构体(N 1,N 2和N 3),但是仅获得了两个区域异构体(N 1和N2)使用8-氮杂腺嘌呤。它们由13 C-NMR和CD光谱表征。8-氮杂- 2'的N-糖苷键,3'-二脱氧腺苷(1)为CA。抗酸稳定性是2',3'-二脱氧腺苷的10倍。化合物1被腺苷脱氨酶脱氨基,并以其O -5'-三磷酸形式显示出对HIV逆转录酶的抑制活性。