英文同义词: | tert-butyl 4'-oxo-3',4'-dihydrospiro[piperidine-4,2'-pyrano[2,3-b]pyridine]-1-carboxylate;tert-butyl 4-oxospiro[3H-pyrano[2,3-b]pyridine-2,4'-piperidine]-1'-carboxylate;Spiro[piperidine-4,2'-[2H]pyrano[2,3-b]pyridine]-1-carboxylic acid, 3',4'-dihydro-4'-oxo-, 1,1-dimethylethyl ester |