US6740757B2 - Enantiomers of 6-[(4-Chloro-Phenyl)-Hydroxy-(3-Methyl-3h-Imidazol-4-Yl)-Methyl]-4-[3-(3-Hydroxy-3-Methyl-but-1-Ynyl)-Phenyl]-1-Methyl-1h-Quinolin-2-One and Salts Thereof, Useful in the Treatment of Cancer