Simple Synthesis of 5-Substituted Resorcinols: A Revisited Family of Interesting Bioactive Molecules
作者:Emma Alonso、Diego J. Ramón、Miguel Yus
DOI:10.1021/jo9610624
日期:1997.1.1
through the corresponding mesylates 5 or directly from benzylic derivatives by catalytic hydrogenation, afforded compounds 6, which are finally demethylated to yield 5-alkyl-3,5-dihydroxyresorcinols, such as olivetol (7a), grevillol (7b), 1,3-dihydroxy-5-propylbenzene (7c), or dihydropinosilvine (7d). Dehydration of alcohol derivatives 4 followed by demethylation led to hydroxylated stilbene-type structures
3,5-二甲氧基苄基三甲基甲硅烷基醚(3)与不同醛(n-PrCHO,nC(11)H(23)CHO,MeCHO,PhCHO)在锂粉和催化量萘(4 mol)的存在下反应%)在水解后得到中等产率的预期醇4。这些化合物通过相应的甲磺酸酯5脱羟基或直接由苄基衍生物通过催化加氢脱羟基,得到化合物6,最后将其脱甲基,得到5-烷基-3,5-二羟基间苯二酚,例如橄榄酚(7a),格列维洛(7b) ,1,3-二羟基-5-丙基苯(7c)或二氢吡sil硅(7d)。醇衍生物4脱水后再去甲基化,会生成羟基化的1,2-苯乙烯型结构,如宾诺硅碱(9d),白藜芦醇(9e)或甲基吡啶(9f),在某些情况下,可以将其氢化得到饱和分子,例如康普他汀B-4四甲基醚(6f)或金联双苄基(6g)。最后,当在其他亲电子试剂[Me(3)SiCl,t-BuCHO,CH(3)(CH(2))(4)CHO,4-Me(3)的存在下进行化合物3的萘催化