Five hydroxylated analogues of tamoxifen [1,(2)-2-[p-(1, 2-diphenyl-l-butenyl) phenoxy]-~,~- dimethylethylamine] and its geometric isomer were prepared by reaction of protected hydroxy-a-ethyldeoxybenzoins with 4-[2-(di-methylamino) ethoxy] phenylmagnesium bromide, followed by acid-catalyzed dehydration-deprotection and chromatographic separation of isomer mixtures. Estrogen receptor binding affinity and estrogenic and ...