1986 Communications to the Editor Chem. Pharm. Bull. 44(lO) 1986—1988 (1996) Vol. 44, No. to EFFICIENT AND CONVENIENT SYNTHESIS OF ANGULAR FURANOCOUMARINS FROM HYDROXYCOUMARINS Takashi HARAYAMA * and Yoshitaka NISHITA Faculty of Pharmaceutical Sciences, Okayama University, Tsushima-naka 1-1—1, Okayama 700, Japan Angular furanocoumarins (1) were synthesized via sequential reactions of vinylation of halo—hydroxycoumarins (5 ...