A synthesis of the phenolic lipid, 3-[(Z)-pentadec-8-enyl] catechol, (15:1)-urushiol
作者:John H.P Tyman、Brian G Schofield、Choong H Khor
DOI:10.1016/s0009-3084(02)00125-1
日期:2002.12
formed by demethoxylation. Reaction of the dimethoxy compound with boron tribromide resulted in both bromination and demethylation to give 7-(2,3-dihydroxyphenyl) heptylbromide. This bromide in tetrahydrofuran (THF) containing hexamethylphosphoric triamide reacted with excess lithium oct-1-yne to give 3-(pentadec-8-enyl)catechol which, by catalytic hydrogenation in ethyl acetate containing quinoline
(15:1)-漆酚,漆酚单烯,3-[((Z)-pentadec-8-enyl]儿茶酚,1,2-二羟基-3-[(Z)-pentadec-8-enyl]苯,描述了Rhus毒杜鹃和Rus vernicifera的毒性原理之一。在OH存在下用乙基乙烯基醚保护的6-氯己基-1-醇在锂的存在下与2,3-二甲氧基苯甲醛反应,在用甲醇4-甲苯磺酸除去保护基后得到1-(2,3 -二甲氧基苯基)庚烷-1,7-二醇。在乙醇中用钯-碳催化氢解选择性地得到7-(2,3-二甲氧基苯基)庚烷-1-醇,并伴随着少量的由脱甲氧基化形成的7-(3-甲氧基苯基)庚烷-1-二醇。二甲氧基化合物与三溴化硼的反应导致溴化和脱甲基,得到7-(2,3-二羟基苯基)庚基溴化物。