The synthesis of the adenine derivative (±)-(1α,2β,4α)-4-(6-amino-9H-purin-9-yl)-1,2-cyclopentanediol (2) and its hypoxanthine analogue (3) as carbocyclic nucleosides lacking the 5′-methylene is described in 7 steps from 3-cyclopenten-1-ylamine hydrochloride (4) in on overall yield of 30% for 2 and 27% for 3.
腺嘌呤衍
生物(±)-(1α,2β,4α)-4-(6-
氨基-9H-
嘌呤-9-基)-
1,2-环戊二醇(2)及其
次黄嘌呤类似物(3)的合成缺乏5'-亚甲基核苷的碳环在7个步骤由3-
环戊烯-1-基胺盐酸盐(描述4)在30%的总产率为2和27%为3。