N1[C:6]2[CH2:7][CH2:8][CH2:9][C:5]=2C(=O)NC1=O.N1C=CC(=O)NC1=O.C[Si](C)(C)[CH2:22][CH2:23][O:24][CH2:25][Cl:26]>>[CH2:23]([O:24][CH2:25][Cl:26])[C:22]1[CH:8]=[CH:9][CH:5]=[CH:6][CH:7]=1In a similar manner to the procedures described in Reference Example 3, reactions were carried out using 6,7-dihydro-5H-cyclopenta[d]pyrimidine-2,4-dione, instead of pyrimidine-2,4-dione, and using 2-(trimethylsilyl)ethoxymethyl chloride, instead of benzyloxymethyl chloride, to give the title compound (yield 71%) as a pale yellow powder.
Wird geladen…