Reynolds G W, Epstein W L, Rodriguez E
Contact Dermatitis. 1986 Jan;14(1):39-44. doi: 10.1111/j.1600-0536.1986.tb01150.x.
The dermatitic constituents of the glandular hairs of plants in the family Hydrophyllaceae comprise a class of uncommon natural products called "phacelioids". The chemical structures consist of various elaborations of hydroquinone attached to a C10 to C20 prenyl chain. Certain of these compounds are equivalent to the urushiols of Toxicodendron (Rhus) in their capacity to sensitize humans. Although structurally related to the urushiols, the phacelioids do not appear to cross-react in humans either with urushiol, or between phacelioids with different prenyl chains.
水叶草科植物腺毛中的皮炎成分包括一类名为“紫草素类”的罕见天然产物。其化学结构由对苯二酚连接到C10至C20异戊二烯链上的各种衍生物组成。其中某些化合物在使人致敏的能力方面与漆树科植物的漆酚相当。尽管紫草素类在结构上与漆酚相关，但它们在人体内似乎不会与漆酚发生交叉反应，也不会在具有不同异戊二烯链的紫草素类之间发生交叉反应。
