2830. Datiscetin

Nomenclature

CAS number: 480-15-9
3,5,7-Trihydroxy-2-(2-hydroxyphenyl)-4H-1-benzopyran-4-one; 2′,3,5,7-tetrahydroxyflavone; 2′-hydroxycrysidenolon 1493.
C15H10O6; mol wt 286.24.
C 62.94%, H 3.52%, O 33.54%.

Description and references

Cleavage product of datiscin: Stenhouse, Ann. 98, 166 (1856). From roots of Datisca cannabina L., Datiscaceae: Marchlewski, Biochem. Z. 3, 286 (1907). Structure: Leskiewicz, Marchlewski, Ber. 47, 1599 (1914). Synthesis: Kalf, Robinson, J. Chem. Soc. 127, 1968 (1925); Simpson, Wally, ibid. 1955, 166.

Chemical structure

Properties

Pale yellow needles from alc, mp 271°. uv max (96% alc): 264.0, 375.0 nm (log ε 4.265, 4.005). Sol in alcohol, ether, other organic solvents; practically insol in water. Sol in alkaline solns with yellow color.