Castillo-Mendoza Elgar, Zamilpa Alejandro, González-Cortazar Manasés, Ble-González Ever A, Tovar-Sánchez Efraín
Centro de Investigación en Biodiversidad y Conservación, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca 62209, Morelos, Mexico.
Centro de Investigación Biomédica del Sur, Instituto Mexicano del Seguro Social, Argentina No. 1, Col. Centro, Xochitepec 62790, Morelos, Mexico.
Plants (Basel). 2022 Oct 4;11(19):2610. doi: 10.3390/plants11192610.
Mexico is considered one of the main regions of diversification of the genus (oaks). Oak species are one of the most important tree groups, particularly in temperate forests, due to its diversity and abundance. Some studies have shown that oak contains specialized metabolites with medicinal importance. In this work, the acetonic extract from leaves of three Mexican oaks (, and ) was separated using thin-layer chromatography and column chromatography. Chemical identification of the major compounds was determined using high-performance liquid chromatography and nuclear magnetic resonance. Nineteen compounds were identified, three belonging to the terpenoid family (ursolic acid, β-amyrin, and β-sitosterol) and 16 from the phenolic family. Of the isolated compounds, seven are new reports for oak species (scopoletin, ursolic acid, β-amyrin, luteolin-7-O-glucoside, kaempferol-3-O-sophoroside, kaempferol-3-O-glucoside, and kaempferol-3-O-sambubioside). More compounds were identified in followed by and then . The characterization of specialized metabolites in oak species is relevant, from both phytocentric and anthropocentric perspectives.
墨西哥被认为是栎属（橡树）多样化的主要地区之一。橡树物种是最重要的树木群体之一，特别是在温带森林中，因其多样性和丰富性。一些研究表明，橡树含有具有药用价值的特殊代谢产物。在这项工作中，使用薄层色谱法和柱色谱法分离了三种墨西哥橡树（[具体树种1]、[具体树种2]和[具体树种3]）叶子的丙酮提取物。使用高效液相色谱法和核磁共振法对主要化合物进行化学鉴定。鉴定出了19种化合物，其中3种属于萜类家族（熊果酸、β-香树脂醇和β-谷甾醇），16种来自酚类家族。在分离出的化合物中，有7种是橡树物种的新报道（东莨菪素、熊果酸、β-香树脂醇、木犀草素-7-O-葡萄糖苷、山柰酚-3-O-槐糖苷、山柰酚-3-O-葡萄糖苷和山柰酚-3-O-接骨木二糖苷）。[具体树种1]中鉴定出的化合物更多，其次是[具体树种2]，然后是[具体树种3]。从植物中心和人类中心的角度来看，橡树物种中特殊代谢产物的表征都具有重要意义。
