9150. Tephrosin

Nomenclature

CAS number: 76-80-2
(7aR-cis)-13,13a-Dihydro-7a-hydroxy-9,10-dimethoxy-3,3-dimethyl-3H-bis[1]benzopyrano[3,4-b:6′,5′-e]pyran-7(7aH)-one; hydroxydeguelin; toxicarol.
C23H22O7; mol wt 410.42.
C 67.31%, H 5.40%, O 27.29%.

Description and references

Occurs in leaves of Tephrosia vogelii Hook. f., Leguminosae, in derris root, cubé root: Hanriot, Compt. Rend. 144, 150 (1907); Clark, J. Am. Chem. Soc. 53, 729 (1931). Structure: Butenandt, Hilgetag, Ann. 495, 172 (1932).

Chemical structure

Properties

Prisms. mp 198° (218-220°). Practically insol in water. Sol in chloroform, ether, acetone; sparingly sol in methanol.