作者:Takashi Matsumoto、Yoshinori Endo、Masaru Okimoto
DOI:10.1246/bcsj.56.2018
日期:1983.7
by treatment with lead tetraacetate and iodine, affored 6β,20-epoxyabieta-8,11,13-triene. This was converted into a separable mixture of abieta-8,11,13-trien-20-ol (13) and 5βH-abieta-8,11,13-trien-20-ol (14) by a series of reactions; ether cleavage with acetic p-toluenesulfonic anhydride, catalytic hydrogenation, and reduction with lithium aluminium hydride. Acetylation of 13 and 14 gave the corresponding
用氢化铝锂还原 abieta-8,11,13,-trien-6-one,然后用四乙酸铅和碘处理,得到 6β,20-epoxyabieta-8,11,13-triene。通过一系列反应将其转化为 abieta-8,11,13-trien-20-ol (13) 和 5βH-abieta-8,11,13-trien-20-ol (14) 的可分离混合物;用乙酸对甲苯磺酸酐进行醚裂解,催化加氢,用氢化铝锂还原。13 和 14 的乙酰化得到相应的乙酸酯,20-乙酰氧基 abieta-8,11,13-triene (11) 和 20-acetoxy-5βH-abieta-8,11,13-triene (12)。在无水氯化铝存在下,11 与乙酰氯的 Friedel-Crafts 酰化得到 20-乙酰氧基-12-乙酰基松香-8,11,13-三烯,通过用间氯过苯甲酸氧化并随后用氢化铝锂处理将其转化为pisiferol。合成的pisiferol