1-adamantan-2-yl-3-cyclopropylmethyl-4-isopropyl-1,3-dihydro-imidazol-2-one 在
铂 silica gel 、 ethyl acetate heptane 作用下,
以
ethyl acetate heptane 为溶剂,
以provided 1-adamantan-2-yl-3-isobutyl-4-isopropyl-imidazolidin-2-one as the less polar component (16 mg, Rf=0.7, ethyl acetate/heptane 1:1, MS (ESI): 319.3 (MH+)) and 1-adamantan-2-yl-3-cyclopropylmethyl-4-isopropyl-imidazolidin-2-one as the more polar component (24 mg, Rf=0.65, ethyl acetate/heptane 1:1, MS (ESI)的产率得到1-adamantan-2-yl-3-isobutyl-4-isopropyl-imidazolidin-2-one