5-ethyl-6-(3,5-dimethylphenoxy)-2,4-pyrimidinedione   、                                                                                      (5-t-Butyldimethylsilyloxymethylcyclopent-1-en-1-yl)methyl bromide                                                                                                                                                                                                                                                                                                          以to obtain the titled compound (52 mg)的产率得到6-(3,5-Dimethylphenoxy)-5-ethyl-1-[[5-(hydroxymethyl)cyclopenten-1-yl]methyl]pyrimidine-2,4-dione