摘要 缅甸紫胶树 Melanorrhoea usitate 的 28 种成分已被鉴定。树液由噻硫醇 (ca 20 %)、laccol (ca 10 %)、漆酚 (4 %)、具有 12-苯基十二烷基的 3-取代邻苯二酚 (ca 30 %) 或 10-苯基癸基 (ca 8 %) 的同系物组成、4-取代的儿茶酚 (ca 3%) 和 5-取代的间苯二酚 (ca 1%),具有相同的取代基。含有特征侧链基团的 3-取代酚也较少。讨论了这些次生植物代谢物的生物合成途径,尤其是具有 (ω-苯基烷基侧链) 的新型酚类脂质。
Synthesis of 3- and 4-(ω-Phenylalkyl)catechols, the Sap Exuded from a Burmese Lac Tree,<i>Melanorrhoea Usitate</i>
作者:Tetsuo Miyakoshi、Yumin Du、Ju Kumanotani
DOI:10.1246/bcsj.64.1054
日期:1991.3
The presence of 3- and 4-(ω-phenylalkyl)catechols in Burmeselac has been confirmed by their synthesis. 3-(ω-Phenylalkyl)veratroles were synthesized by alkylation of ω-phenylalkyl bromide with aryl lithium derived from veratrole. 4-(ω-Phenylalkyl)veratroles were similarly obtained from ω-phenylalkyl bromide and 4-bromoveratrole. Demethylation of 3- and 4-(ω-phenylalkyl)veratroles with boron tribromide