5-Nitrofuran-2-ylmethyl group as a potential bioreductively activated pro-drug system
作者:Jane M. Berry、Corrine Y. Watson、William J. D. Whish、Michael D. Threadgill
DOI:10.1039/a607202j
日期:——
5-Substituted isoquinolin-1-ones have been synthesised by one-pot
Curtius rearrangement of the corresponding substituted 3-phenylpropenoyl
azides and cyclisation. Arylmethylation of the anions of the
isoquinolinones with benzyl halides [4-methoxybenzyl chloride,
2-(chloromethyl)furan and 5-nitro-2-(tosyloxymethyl)furan] takes place
exclusively at nitrogen. Nitration of
2-(furan-2-ylmethyl)isoquinolin-1-one in strongly acidic medium gives
2-(5-nitrofuran-2-ylmethyl)isoquinolin-1-one, whereas weaker acidic
conditions lead to dinitration. Curtius rearrangement of
3-carboranylbutanoyl azide and trapping with 5-nitrofuran-2-ylmethanol
gives 5-nitrofuran-2-ylmethyl
N-(3-carboranylpropyl)carbamate. Biomimetic reduction
of these nitrofuranylmethyl derivatives of anticancer drugs triggers
release of the parent drugs. Thus, these nitrofurans have potential
applications as pro-drugs for selective release of therapeutic drugs in
hypoxic solid tumours.