Arthrinins E–G (1–3), three new sesquiterpenoids possessing non-isoprenoid botryane skeleton, were isolated from the fermentation of an endophytic fungus named Arthrinium sp. HS66 which colonized in the stems of Isodon xerophilus. Their structures were determined by extensive spectroscopic methods. Furthermore, the structure of 1 was unambiguously confirmed by X-ray diffraction, while those of 2 and 3 were verified through quantum chemical calculation of NMR data and ECD spectra.

中文翻译：

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Arthrinins EG，来自植物内生真菌Arthrinium sp。的三种Botryane倍半萜类化合物。HS66。

Arthrinins E-G（1 - 3），具有非类异戊二烯botryane骨架三个新的倍半萜类中，从内生真菌命名的发酵中分离节菱藻。HS66植于Xerophilus Isodon的茎中。它们的结构通过广泛的光谱方法确定。此外，通过X射线衍射明确地确定了1的结构，而通过NMR数据和ECD光谱的量子化学计算验证了2和3的结构。