Patent ID: 8802871

Claim:
A compound of Formula II: wherein: R 1 is C 3-4 alkyl, halo-C 1-4 alkyl, hydroxy-C 1-4 -alkyl, or —C 1-4 -alkyl-OR′, wherein R′ is an oxygen protecting group; and R 2 and R 3 are each independently hydrogen or halo; subject to the proviso that when one of R 2 or R 3 is ortho-fluoro and the other is hydrogen, R 1 is not —CH 2 F; and when one of R 2 or R 3 is ortho-fluoro, the other is hydrogen, and R 1 is —C 1-4 alkyl-OR′, then R′ is selected from the group consisting of methylthiomethyl, benzyloxymethyl, MPM (p-methoxybenzyloxymethyl), 2-(trimethylsilyl)ethyl), benzyl, para-methoxybenzyl, trimethylsilyl, triethylsilyl, triisopropylsilyl, TBDMS (t-butyldimethylsilyl), tribenzylsilyl, TBDPS (t-butyldiphenyl silyl), 2-trimethylsilylprop-2-enyl, t-butyl, tetrahydropyranyl and allyl, or a salt thereof.