Reaction of 8,2′-O-cycloadenosine with hydrazine and amines. Convenient preparations of 9-β-D-arabinofuranosyladenine and its derivatives

Abstract

Reaction between 8,2′-O-cycloadenosine (2) and hydrazine gives a high yield of (1b) which on oxidation with yellow mercuric oxide is converted into ara-A (1a) in quantitative yield; reaction between (2) and the appropriate amines gives the 8-amino-ara-A derivatives (1c–g) in good to high yields.