catalytic hydrogenation of bilobol isolated from Ginkgo biloba. Compounds 6 and 7 were prepared from anacardic acid as the starting material while compounds 8 and 9 were prepared from phenol as the starting material. Compounds 1-9 were tested for their ability to cross-react with poison ivy urushiol in sensitized guinea pigs. Compounds 6 and 8 were reactive at the 10-microgram dose level when applied
描述了常春藤漆
酚的不同异构体和类似物的总合成。这些化合物包括位置异构体1-5和含氮类似物6和8及其甲
磺胺基衍
生物7和9。
3,4-二甲氧基苯甲醛,间二
甲氧基苯,
间苯二酚和对二
甲氧基苯用作化合物1的原料, 2、3和4。化合物5是通过对从
银杏分离的双
酚进行催化氢化而制备的。化合物6和7由
茴香酸作为起始原料制备,而化合物8和9由
苯酚作为起始原料制备。测试了化合物1-9与致敏豚鼠中的常春藤漆
酚的交叉反应能力。局部使用时,化合物6和8在10微克剂量
水平具有反应性,而化合物1在该剂量下对皮肤有刺激性。另一方面,化合物2-5、7和9直至30微克剂量
水平都没有交叉反应。讨论了交叉致敏性的结构要求。