1. Heterocyclic N-glycosides—V
2. Compounds like III i.e., 1,2,3-trideoxy-4-O-acctyl-3-(6′-chloro-9′-purinyl)-D-threo-pent-l-enopyranose (1) (obtained from the reaction of 6-chloropurine with 3,4-di-O-acetyl-D-xylal) along with that recently reported by Townsend et al., (4), 3-deoxy-3-(6-chloro-2-methylthio-9-purinyl)-D-ery thro-hex-1-enopyranoses, represent a new class of nucleoside analogs.
3. These compounds have been previously obtained from the reaction of 3,4-di-O-acetyl-L-arabinal with 5,6-dichlorobenzo-triazole. Their structure and conformation were established by NMR studies (6).