Fluorosubstitution and 7-alkylation as prospective modifications of biologically active 6-aryl derivatives of tricyclic acyclovir and ganciclovir analogues
作者:Tomasz Ostrowski、Bozenna Golankiewicz、Erik De Clercq、Jan Balzarini
DOI:10.1016/j.bmc.2005.01.004
日期:2005.3
A series of fluorine containing tricyclic analogues of acyclovir (ACV, 1) and ganciclovir (GCV, 2) were synthesized and evaluated for their activity against herpes simplex virus type 1 (HSV-1) and type 2 (HSV-2) and cytostatic activity against HSV-1 thymidine kinase (TK) gene-transduced human osteosarcoma tumour cells. It was found that fluorine substitution reduced the antiviral activity, but most
Aryl or tert-butyl substituent in the 6 position of 3,9-dihydro-3-[(2-hydroxy-ethoxy)methyl]-9-oxo-6-R-5H-imid 1 directs the benzylation reaction partly into N-4 position to give 3. Cleavage of the third ring of 3 gives 3-benzylacycloguanosine 5, a first 3-aralkilo-9-substituted guanine.