Sodium Hydroxide → Penciclovir

Participants

Reaction Steps

2-Amino-6-chloro-9-[2-(2,2-dimethyl-1,3-dioxan-5-yl)ethyl]purine (3.74 g, 12 mmol) in hydrochloric acid (2.0M, 12 ml) was heated under reflux for 1.5 hours. The solution was neutralised with aqueous sodium hydroxide (10%) and then allowed to cool. The solution was filtered and the solid washed with water to afford 9-(4-hydroxy-3-hydroxymethylbut-1-yl)guanine as a white crystalline solid (2.18 g, 72%), m.p. 275-277° C.; (Found: C, 47.31; H, 6.02; N, 27.81%; C10H15N5O3 requires C, 47.43; H, 5.97; N, 27.65%).

Provenance & Evidence