1: stigmasta-5,22-dien-3β-ol With hydrogen; Raney-nickel W-2 in ethyl acetate T=20°C; 15 h; atmospheric pressure; 2: acetyl chloride With pyridine in dichloromethane T=20°C; 1 h; Further stages. Title compound not separated from byproducts.;
1: palladium; ethyl acetate / Hydrogenation.Kochen des Reaktionsprodukts mit Zinkacetat in Essigsaeure und Behandlung des erhaltenen 3β-Acetoxy-stigmastens-(5) mit aethanol. KOH View Scheme
参考文献
Journal of the American Chemical Society, , vol. 62, p. 3346