12-05105. Irisolone [Archived]
Nomenclature
CAS number: 3301-68-6
7-(4-Hydroxyphenyl)-9-methoxy-8H-1,3-dioxolo[4,5-g][1]benzopyran-8-one; “Sosan”; 4′-hydroxy-5-methoxy-6,7-methylenedioxyisoflavone. C17H12O6; mol wt 312.27.
C 65.39%, H 3.87%, O 30.74%.
Description and references
From rhizomes of Iris nepalensis D. Don, Iridaceae. Isoln and structure: Gopinath et al., Tetrahedron 16, 201 (1961). Synthesis: Fukui, Matsumato, Bull. Chem. Soc. Jpn. 38, 887 (1965).
Properties
Pale yellow crystals from ethyl acetate, mp 269-270°. uv max: 270 nm (log ε 4.62), inflection 330 nm (log ε 3.97).Derivative
Methyl ether.C18H14O6; mol wt 326.30.
C 66.26%, H 4.32%, O 29.42%.
Properties
Plates, mp 184-185°.Status
This monograph has been retired and is no longer subject to revision or update.