α-(R)-(3-(R)-Formyl-4-(S)-phenyl-pyrrolidin-1-yl)cyclohexaneacetic acid, para-methoxybenzyl ester 、
4-(5-Methyl4-phenyl-1H-pyrazol-3(2H)-on-2-yl)-piperidine 在
silica gel 作用下,
以there was obtained 0.061 g of α-(R)-(3-(S)-((4-(5-methyl-4-phenyl-1H-pyrazol-3(2H)-on-2-yl)-piperidin-1-yl)methyl)-4-(S)-phenylpyrrolidin-1-yl)-cyclohexaneacetic acid 4-methoxybenzyl ester after chromatography on silica gel (20 mL column—elution with 3% MeOH in dichlormethane)的产率得到α-(R)-(3-(S)-((4-(5-Methyl-4-phenyl-1H-pyrazol-3(2H)-on-2-yl)piperidin-1-yl)methyl)-4-(S)-phenylpyrrolidin-1-yl)-cyclo-hexaneacetic acid 4-methoxybenzyl ester