Nomenclature
CAS number: 1983-72-8
3-Hydroxy-6
H-[1,3]dioxolo[5,6]benzofuro[3,2-
c][1]benzopyran-6-one; 7-hydroxy-11,12-(methylenedioxy)coumestan; 7-hydroxy-5′,6′-methylenedioxybenzofurano(3′,2′:3,4)coumarin.
C
16H
8O
6; mol wt 296.23.
C 64.87%, H 2.72%, O 32.41%.
Description and references
Occurs in alfalfa having viral leafspot infections.
Synthesis: Livingston et al., J. Org. Chem. 30, 2353 (1965); Jurd, J. Pharm. Sci. 54, 1221 (1965);
Fukui et al., Experientia 24, 536 (1968).
Properties
mp 326-327°. uv max (ethanol): 245, 270, 297, 310, 348 nm (log ε 4.29, 3.91, 3.85, 4.03, 4.46).