Ethyl 3'-hydroxy-4'-oxo-7',8'-dihydro-4'H,6'H-spiro[cyclopentane-1,9'-pyrido[1,2-a]pyrimidine]-2'-carboxylate 1g

Ethyl 3'-hydroxy-4'-oxo-7',8'-dihydro-4'H,6'H-spiro[cyclopentane-1,9'-pyrido[1,2-a]pyrimidine]-2'-carboxylate 1g