5168. 8-Isoestrone

Nomenclature

CAS number: 517-06-6
(8α)-3-Hydroxyestra-1,3,5(10)-trien-17-one; Δ1,3,5-8-epiestratrien-3-ol-17-one; 8α-estrone; 8-epiestrone.
C18H22O2; mol wt 270.37.
C 79.96%, H 8.20%, O 11.84%.

Description and references

Prepn: Serini, Logemann, Ber. 71, 186 (1938); Johnson et al., J. Am. Chem. Soc. 80, 661 (1958); Ananchenko, Torgov, Tetrahedron Lett. 1963, 1553.

Chemical structure

Derivative

dl-Form.

Properties

Prisms from methanol, mp 254-255°.

Derivative

dl-Methyl ether.
C19H24O2; mol wt 284.39.
C 80.24%, H 8.51%, O 11.25%.

Properties

Blades from methanol, mp 153-155°.

Derivative

dl-Benzoate.
C25H26O3; mol wt 374.47.
C 80.18%, H 7.00%, O 12.82%.

Properties

Prisms from methanol, mp 197-198°.