The Orchidaceae family comprises about 27,000 species and is considered one of the largest families of flowering plants. Herein, the first chemical study of the native Brazilian orchid Cattleya tigrina A. Rich. reports the isolation of 15 compounds of different classes of natural products, among them triterpenoids, stilbenoids, phenolic acids, and 1,4-dihydro-phenanthrenequinone derivatives. The compounds were identified based on spectroscopic analyses. Cytotoxicity assays with plant crude extract, fractions and isolated compounds were performed against the HeLa cells and against the non-cancerous VERO cell lines. The chemophenetic significance of the presence of different compounds in Epidendroideae subfamily and Laeliinae subtribe was also discussed.

兰花科约有 27,000 种，被认为是最大的开花植物科之一。在此，首次对巴西本土兰花Cattleya tigrina A. Rich 进行化学研究。报告分离了 15 种不同类别天然产物的化合物，其中包括三萜、芪类、酚酸和 1,4-二氢菲醌衍生物。基于光谱分析鉴定化合物。使用植物粗提物、馏分和分离的化合物对 HeLa 细胞和非癌性 VERO 细胞系进行细胞毒性测定。还讨论了表树亚科和月桂亚科中不同化合物存在的化学表观意义。