Steroids

Novel approach to determining the absolute configurations at the C3-positions of various types of sterols based on an induced circular dichroism

…, Y Katsumoto, T Tanaka, M Ozeki, H Iwasaki, M Node…

Index: Fujiwara, Toshio; Taniguchi, Yuka; Katsumoto, Yukiteru; Tanaka, Takeyuki; Ozeki, Minoru; Iwasaki, Hiroki; Node, Manabu; Yamashita, Masayuki; Hosoi, Shinzo Steroids, 2012 , vol. 77, # 12 p. 1198 - 1204

Full Text: HTML

Citation Number: 1

Abstract

Circular dichroism (CD) spectra of the 2, 2′-binaphthyl ester derived from Δ5-sterols showed not bisignate CD but diagnostic CD bands at around 210 and 240nm. These bands might be attributable to an interaction between an olefinic chromophore and a binaphthyl one. Various types of unsaturated sterols were thus derivatized followed by complete hydrogenation, to give saturated sterols. As a result, CD spectra of the binaphthyl ...