5α-Lanost-8-en-3β-yl acetate was converted by way of 3β-acetoxy-5α-lanost-8-en-7-one into 3β-acetoxy-7α-hydroxy-5α-lanost-8-ene, which as the 7α-nitrite did not undergo the Barton reaction, and which with lead tetra-acetate–iodine gave 3β-acetoxy-5α-lanosta-7,9(11)-diene. 3β-Acetoxy-5α-lanost-9(11)-en-7-one, when hydrogenated over platinum in ethyl acetate–perchloric acid gave only 3β-acetoxy-5α-lanosta-7
将5α-Lanost-8-en-3β-
乙酸乙烯酯通过3β-乙酰
氧基-5α-lanost-8-en-7-one转化为3β-乙酰
氧基-7α-羟基-5α-lanost-8-
烯。因为7α-
亚硝酸盐未经历Barton反应,并且与四
乙酸铅-
碘反应生成3β-乙酰
氧基-5α-lanosta-7,9(11)-二
烯。3β-乙酰
氧基-5α-lanost-9(11)-en-7-one,当在
乙酸乙酯-
高氯酸中
铂上
氢化时,仅生成3β-乙酰
氧基-5α-lanosta-7,9(11)-二
烯,同时使用
硼氢化钠的主要产率为3β-乙酰
氧基-7β-羟基-5α-
镧-9(11)-
烯。3β-乙酰
氧基-5α-lanosta-7,9(11)-二
烯的7β,8β-
环氧化物的还原裂解也产生了7β-羟基-5α-lanost-9(11)-
烯;无法制备3β-乙酰
氧基-5α-羊毛脂7,9(11)-二
烯的7α,8α-环
氧化合物。