2-methyl-2-[5-methyl-1-[(2R)-2-(oxan-4-yloxy)-2-[2-(phenylmethoxymethyl)phenyl]ethyl]-6-(1,3-oxazol-2-yl)-2,4-dioxothieno[2,3-d]pyrimidin-3-yl]propanoic acid 在
palladium on activated charcoal 、
溶剂黄146 作用下,
以11%的产率得到2-[1-[(2R)-2-[2-(hydroxymethyl)phenyl]-2-(oxan-4-yloxy)ethyl]-5-methyl-6-(1,3-oxazol-2-yl)-2,4-dioxo-1H,2H,3H,4H-thieno[2,3-d]pyrimidin-3-yl]-2-methylpropanoic acid