Thermal N-9' → N-7' Isomerization of (6'-Substituted)-9-(2,3-Dihydro-5H-1,4-Benzodioxepin-3-yl)-9H-Purines in Solution: Mechanistic Aspects

The purine ring system is undoubtedly among the most ubiquitous of all the heterocyclic compounds. In recent years modified purine structures both of natural and synthetic origin have been a rich source of biologically active materials. The halogen at 6 position of the purine moiety of the (RS)-9 or 7-(2,3-dihydro-5H-1,4-benzodioxepin-3-yl)-9H-or 7Hpurines shows an interesting reactivity which is presented and discussed. The anticarcinogenic potential of the target molecules is reported against the MCF-7 cancer cell line.