06-SUBSTITUTED GUANINE DERIVATIVES, A PROCESS FOR THEIR PREPARATION AND THEIR USE IN TREATING TUMOUR CELLS

O &cir& _ -hetarylalkyl- or naphthylalkylguanine derivatives of formula (I) wherein Y is H, ribosyl, deoxyribosyl, or R"XCHR"', wherein X is O or S, R'' and R''' are alkyl, or substituted derivatives thereof; R' is H, or alkyl or hydroxyalkyl; R i...

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Hauptverfasser: RAFFERTY,JOSEPH ANTHONY, MCCORMICK,JOAN ELIZABETH, WILLINGTON,MARK ANDREW, MARGISON,GEOFFREY PAUL, KELLY,JANE, ELDER,RHODERICK HUGH, MCMURRY,THOMAS BRIAN HAMILTON, WATSON,AMANDA JEAN, MCELHINNEY,ROBERT STANLEY
Format: Patent
Sprache:eng
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Zusammenfassung:O &cir& _ -hetarylalkyl- or naphthylalkylguanine derivatives of formula (I) wherein Y is H, ribosyl, deoxyribosyl, or R"XCHR"', wherein X is O or S, R'' and R''' are alkyl, or substituted derivatives thereof; R' is H, or alkyl or hydroxyalkyl; R is (i) a cyclic group having at least one 5- or 6-membered heterocyclic ring, optionally with a carbocyclic or heterocyclic ring fused thereto, the or each heterocyclic ring having at least one hereto atom chosen from O, N or S, or a substituted derivative thereof; or (ii) naphthyl or a substituted derivative thereof; and pharmaceutically acceptable salts thereof, exhibit the ability to deplete O &cir& _ -alkylguanine-DNA alkyltransferase (ATase) activity. A process for preparation of the compounds is described. The compounds have utility in combination with alkylating agents in the chemotherapeutic treatment of tumour cells.