Adler J H, Salt T A
Department of Biological Sciences, Drexel University, 19104, Philadelphia, PA.
Lipids. 1983 Mar;18(3):229-32. doi: 10.1007/BF02534553.
The 4-desmethylsterols from the leaves ofBeta vulgaris are a mixture of Δ(7)-sterols (71%) and Δ(5)-sterols (29%). The Δ(7)-sterols isolated are spinasterol (24α-ethylcholesta-7,22-dien-3β-ol; 45%), 22-dihydrospinasterol (24α-ethylcholest-7-en-3β-ol; 24%), and avenasterol (24-ethylcholesta-7,24(28)-dien-3β-ol; 1.5%). The Δ(5)-sterols isolated are sitosterol (24α-ethylcholest-5-en-3β-ol; 15%), 24ζ-ethylcholesta-5,22-dien-3β-ol (7.5%), and 24ζ-methylcholest-5-en-3β-ol (7%).
甜菜叶中的4-去甲基甾醇是Δ(7)-甾醇（71%）和Δ(5)-甾醇（29%）的混合物。分离得到的Δ(7)-甾醇有菠菜甾醇（24α-乙基胆甾-7,22-二烯-3β-醇；45%）、22-二氢菠菜甾醇（24α-乙基胆甾-7-烯-3β-醇；24%）和燕麦甾醇（24-乙基胆甾-7,24(28)-二烯-3β-醇；1.5%）。分离得到的Δ(5)-甾醇有谷甾醇（24α-乙基胆甾-5-烯-3β-醇；15%）、24ζ-乙基胆甾-5,22-二烯-3β-醇（7.5%）和24ζ-甲基胆甾-5-烯-3β-醇（7%）。
