Synthesis of *-Alkylmethylen-2-oxo-chromanes with anticoagulant activity and *-Alkylmethylen-*-lactones from 3-Diethylphosphono-3,4-dihydrocoumarins, 3-Diethylphosphonolactones and Aldehydes. Part 2'

G. FALSONE

CATENI, FRANCESCA

M. M. DE NARDO

ZORZET, SONIA