and ring annulation with hydrazine afforded 20. The acyclic analog 4-amino-1-[(1,3-dihydroxy-2-propoxy)methyl]pyrrolo[2,3-d]pyridazin -7-one (24) was prepared via the sodium salt glycosylation of 5 with (1,3-dihydroxy-2-propoxy)methyl bromide (22) followed by a ring annulation with hydrazine. N-Bromosuccinimide treatment of 13, 20, and 25 afforded the 3-bromo derivatives 15, 21, and 25. Evaluation of
4-
氨基-1-(β-D-
呋喃呋喃糖基)
吡咯并[2,3-d]
哒嗪-7-一(1)和4-
氨基-3-溴-1-(β-D-为了获得选择性抗病毒药,制备了
核糖呋喃糖基)
吡咯并[2,3-d]
哒嗪-7-(3)。用
肼处理3-
氰基-1-(2,3,5-三-O-苄基-1-β-D-阿拉伯
呋喃糖基)
吡咯-2-羧酸酯(6),得到4-
氨基-1-(2, 3,5-三-O-苄基-1-β-D-阿拉伯
呋喃糖基)
吡咯并[2,3-d]
哒嗪-7-一(7)。用
溴处理7得到4-
氨基-3-溴-1-(2,3,5-三-O-苄基-β-D-阿拉伯
呋喃糖基)
吡咯并[2,3-d]
哒嗪-7-
氢溴酸盐( 9)。用
三氯化硼除去7和9的苄基醚官能团,得到4-
氨基-1-(β-D-阿拉伯
呋喃糖基)
吡咯并[2,3-d]
哒嗪-7-一(8)及其3-
溴类似物10. 4-Amino-1-(2-deoxy-beta-D-erythro-pentofuranosyl)pyrrolo