Roth, H J [On the preparation of 7,7-spiroalkyl-6-oxa-tetrahydro-cumarinones-(5)]. [electronic resource] - Archiv der Pharmazie und Berichte der Deutschen Pharmazeutischen Gesellschaft Nov 1968 - 810-8 p. digital Publication Type: Journal Article ISSN: 0376-0367 Standard No.: 10.1002/ardp.19683011103 doi Subjects--Topical Terms: AcetoacetatesChemistry, PharmaceuticalCoumarins--chemical synthesisEstersKetones--chemical synthesisPyrans