For the first time, the n-hexane extract from the dried stem bark of Cassia grandis L.f. was investigated, and one new fatty acid derivative, named casgraester A (1), was obtained, together with three known ones, 2,3-dihydroxypropyl 28-hydroxyoctacosanoate (2), 2,3-dihydroxypropyl octacosanoate (3), bis-(2,3-dihydroxypropyl)tetracosanedioate (4), three known triterpenoids, lupeol (5), betulinic acid (6), oleanolic acid (7), and three known steroids, β-sitosterol (8), 3-O-β-D-glucopyranosyl-β-sitosterol (9), and 3-O-β-D-glucopyranosylbrassicasterol (10). For the first time, compounds 2–4, 6, and 10 were reported from the genus Cassia, while compounds 5, 7, and 9 were found for the first time from this species. Their structures were elucidated by IR, HR-ICR-MS, ESI-MS/MS, and NMR experiments.

中文翻译：

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来自大决明茎皮的新脂肪酸衍生物

首次对大决明干皮中的正己烷提取物进行了研究，获得了一种新的脂肪酸衍生物，命名为casgraester A (1)，以及三种已知的2,3-二羟丙基脂肪酸衍生物。 28-羟基辛烷酸酯 (2)、2,3-二羟丙基二十二烷酸酯 (3)、双-(2,3-二羟丙基)二十烷二酸酯 (4)、三种已知的三萜、羽扇豆醇 (5)、桦木酸 (6)、齐墩果酸 (7) )，以及三种已知的类固醇，β-谷甾醇 (8)、3-O-β-D-吡喃葡萄糖基-β-谷甾醇 (9) 和 3-O-β-D-吡喃葡萄糖基芸苔甾醇 (10)。化合物 2-4、6 和 10 是首次从决明属中报道，而化合物 5、7 和 9 则是首次从该物种中发现。通过IR、HR-ICR-MS、ESI-MS/MS和NMR实验阐明了它们的结构。