Abstract
Total synthesis of abeo-estradiol, abeo-estradiol 3-methyl ether, and 17alpha-ethynyl abeo-estradiol 3-methyl ether is described. Stereochemical assignments in 9(10 through 19) abeo-estradiol and its 3-methyl ether were made by X-ray analysis of the 17-keytone. Single crystals were grown by evaporation of a petroleum ether-ethanol solution and the intensities of 2619 diffraction spectra were measured, of which 1036 had intensity greater than twice the background. The structure was refined by full-matrix least-squares techniques and all hydrogen atoms were located in the Fourier difference syntheses.
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