A compound of the formula: wherein: R 1 is hydrogen or halogen; R 2 is hydrogen or halogen; R 3 is hydrogen; R 5 is m is an integer between 0 and 5, inclusive; and each occurrence of R f is independently hydrogen; halogen; cyclic or acyclic, substituted or unsubstituted, branched or unbranched aliphatic; cyclic or acyclic, substituted or unsubstituted heteroaliphatic; substituted or unsubstituted, branched or unbranched acyl; substituted or unsubstituted aryl; substituted or unsubstituted heteroaryl; -OR g; -C(=O)R g; - CO 2 R g; -CN; -SCN; -SR g; -SOR g; -SO 2 R g; -NO 2; -N 3; -N(R g) 2; NR g C(=O)R g;-NR g C(=O)N(R g) 2; -OC(=O)OR g; -OC(=O)R g; -OC(=O)N(R g) 2; -NR g C(=O)OR g; or -C(R g) 3; wherein each occurrence of R g is independently hydrogen; halogen; a protecting group selected from methyl ether, substituted methyl ether (e.g. MOM (methoxymethyl ether), MTM (methylthiomethyl ether), BOM (benzyloxymethyl ether), PMBM or MPM (p-methoxybenzyloxymethyl ether), substituted ethyl ether, substituted benzyl ether, silyl ether (e.g. TMS (trimethylsilyl ether), TES (triethylsilylether, TIPS (triisopropylsilyl ether), TBDMS (t-butyldimethylsilyl ether), tribenzyl silyl ether, TBDPS (t-butyldiphenyl silyl ether)), ester (e.g. formate, acetate, benzoate (Bz), trifluoroacetate, dichloroacetate), carbonate, cyclic acetal and ketal, carbamate (including methyl, ethyl, and substituted ethyl carbarmates (e.g. Troc)), amide, cyclic imide derivatives, N-alkyl and N-aryl amines, imine derivatives and enamine derivatives; an optionally substituted aliphatic or heteroaliphatic moiety; an acyl moiety; or an optionally substituted aryl or heteroaryl moiety; or a pharmaceutically acceptable salt thereof; and wherein the compound is not of one of the formulae: R 1 is hydrogen or halogen; R 2 is hydrogen or halogen; R 3 is hydrogen; R 5 is m is an integer between 0 and 5, inclusive; and each occurrence of R f is independently hydrogen; halogen; cyclic or acyclic, substituted or unsubstituted, branched or unbranched aliphatic; cyclic or acyclic, substituted or unsubstituted heteroaliphatic; substituted or unsubstituted, branched or unbranched acyl; substituted or unsubstituted aryl; substituted or unsubstituted heteroaryl; -OR g; -C(=O)R g; - CO 2 R g; -CN; -SCN; -SR g; -SOR g; -SO 2 R g; -NO 2; -N 3; -N(R g) 2; NR g C(=O)R g;-NR g C(=O)N(R g) 2; -OC(=O)OR g; -OC(=O)R g; -OC(=O)N(R g) 2; -NR g C(=O)OR g; or -C(R g) 3; wherein each occurrence of R g is independently hydrogen; halogen; a protecting group selected from methyl ether, substituted methyl ether (e.g. MOM (methoxymethyl ether), MTM (methylthiomethyl ether), BOM (benzyloxymethyl ether), PMBM or MPM (p-methoxybenzyloxymethyl ether), substituted ethyl ether, substituted benzyl ether, silyl ether (e.g. TMS (trimethylsilyl ether), TES (triethylsilylether, TIPS (triisopropylsilyl ether), TBDMS (t-butyldimethylsilyl ether), tribenzyl silyl ether, TBDPS (t-butyldiphenyl silyl ether)), ester (e.g. formate, acetate, benzoate (Bz), trifluoroacetate, dichloroacetate), carbonate, cyclic acetal and ketal, carbamate (including methyl, ethyl, and substituted ethyl carbarmates (e.g. Troc)), amide, cyclic imide derivatives, N-alkyl and N-aryl amines, imine derivatives and enamine derivatives; an optionally substituted aliphatic or heteroaliphatic moiety; an acyl moiety; or an optionally substituted aryl or heteroaryl moiety;