Two new oleanane triterpenoids, sysamarins F (1) and G (2), along with one known analogue (3), were isolated from the leaves of Syzygium samarangense. Their structures were elucidated by means of extensive spectroscopic techniques, including interpretation of 1D and 2D NMR spectra and comparison with the values reported in the literature.

中文翻译：

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苏木的两种新齐墩果三萜类化合物

两种新的齐墩果烷三萜类化合物 sysamarins F (1) 和 G (2)，以及一种已知的类似物 (3)，是从 Syzygium samarangense 的叶子中分离出来的。它们的结构是通过广泛的光谱技术阐明的，包括对 1D 和 2D NMR 光谱的解释以及与文献中报道的值的比较。