Polar extracts of the stinging nettle (Urtica dioica L.) roots contain the lignans (+)-neoolivil, (-)-secoisolariciresinol, dehydrodiconiferyl alcohol, isolariciresinol, pinoresinol, and 3,4-divanillyltetrahydrofuran. These compounds were either isolated from Urtica roots, or obtained semisynthetically. Their affinity to human sex hormone binding globulin (SHBG) was tested in an in vitro assay. In addition, the main intestinal transformation products of plant lignans in humans, enterodiol and entero-lactone, together with enterofuran were checked for their activity. All lignans except (-)-pinoresinol developed a binding affinity to SHBG in the in vitro assay. The affinity of (-)-3,4-divanillyltetrahydrofuran was outstandingly high. These findings are discussed with respect to potential beneficial effects of plant lignans on benign prostatic hyperplasia (BPH).
刺荨麻(Urtica dioica L.)根的极性萃取物中含有
木脂素(+)-neoolivil、(-)-secoisolariciresinol、dehydrodiconiferyl alcohol、isariciresinol、pinoresinol 和 3,4-divanillyltetrahydrofuran。这些化合物或从荨麻根中分离出来,或通过半合成方法获得。在体外试验中测试了它们与人类性激素结合球蛋白(SHBG)的亲和力。此外,还检测了植物木
酚素在人体肠道中的主要转化产物
肠二醇和肠内酯以及肠
呋喃的活性。在体外试验中,除 (-)-pinoresinol 外,所有木
酚素都与 SHBG 具有结合亲和力。(-)-3,4-divanillyltetrahydrofuran 的亲和力非常高。这些研究结果讨论了植物木
酚素对良性前列腺增生症(BPH)的潜在有益作用。