Long-chain phenols. Part 18. Conversion of anacardic acid into urushiol
作者:Lam Soot Kiong、John H. P. Tyman
DOI:10.1039/p19810001942
日期:——
(15 : 0)-Anacardic acid (6-pentadecylsalicylic acid), prepared by reduction of unsaturated anacardic acid from Anacardium occidentale, has been converted into anacardic alcohol (6-pentadecylsalicyl alcohol) and thence by oxidation at carbon into anacardaldehyde. Phenolic oxidation of anacardic alcoholled to 8-pentadecyl-1-oxaspiro-[2.5]octa-5,7-dien-4-one, itself readily convertible photochemically
(15:0)-通过将西洋参Anacardium的不饱和的熊果酸还原而制得的Anacardic酸(6-pentadecylsalicylic acid),已被转化为anacardic醇(6-pentadecylsalicyl alcohol),然后在碳上被氧化为anacardaldehyde。拟南芥醇的苯酚氧化可生成8-十五烷基-1-氧杂螺-[2.5] octa-5,7-dien-4-one,其本身很容易光化学转化,但在热方面却不太容易转化为仲醛。亚硫酰氯与熊果酸的反应主要产生酸酐,通过氢化物还原,酸酐令人满意地降低了茴香醛。anacardaldehyde的达金反应提供(15:0)-urushiol(3- pentadecylcatechol)相同化学和从argentation TLC与来自氢化天然产物漆树。在氢化漆酚中检测到(15:0)-腰果酚(3-十五烷基苯酚)。漆酚的由不饱和组分的组合