作者:J.R. Hanson
DOI:10.1016/s0040-4020(01)92846-7
日期:1970.1
Beyer-15, 16-en-2α,3α, and 3β-alcohols have been prepared and their stereochemistry assigned. 2α-Hydroxybeyer-15,16-epoxide undergoes reaction with lead tetra-acetate to form a 2–20 ether which may be rearranged to a kaurenoid skeleton. Reduction of 3α-hydroxybeyer-15,16-en-2-one affords the 2α,3α-diol. Treatment of the 3-monotoluene-p-sulphonate of this diol with alumina affords the 2-ketone. Beyer-15
已制备了Beyer-15、16-en-2α,3α和3β-醇,并指定了它们的立体化学。2α-羟基拜耳-15,16-环氧与四乙酸铅反应生成2–20醚,该醚可能会重新排列为kaurenoid骨架。3α-羟基拜耳-15,16-en-2-one的还原得到2α,3α-二醇。用氧化铝处理该二醇的3-单甲苯-对磺酸酯得到2-酮。Beyer-15,16-en-3-one经过乙酰氧基化反应得到相应的2β-乙酸盐,可以将其还原为2β,3α-二醇。已研究了这些化合物的NMR光谱中的溶剂位移。