Two new dihydro-β-agarofuran sesquiterpenes, named monichinines G and H (1 and 2), were isolated from the stems and leaves of Monimopetalum chinense Rehd., and their structures were elucidated by spectroscopic analysis including 1D (¹H-NMR and ¹³C-NMR) and 2D (HSQC, HMBC, and NOESY) NMR. The absolute configuration of 2 was determined by using quantum chemical ECD calculations. In addition, the anti-microbial activities of 1 and 2 were tested against seven plant-pathogenic fungi and three plant-pathogenic bacteria, and 2 showed moderate anti-fungal activities against Magnaporthe oryzae, Fusarium graminearum, and Sclerotinia sclerotiorum.

从Monimopetalum chinense Rehd。的茎和叶中分离出两个新的二氢-β- agarofuran倍半萜烯，命名为monichinines G和H（1和2），并通过光谱分析（包括1D（¹ H-NMR和^13）对它们的结构进行了阐明。C-NMR）和2D（HSQC，HMBC和NOESY）NMR。的绝对构型2通过使用量子化学计算ECD确定。此外，的抗微生物活性1和2对7植物致病真菌和三种植物致病菌进行了测试，和2表现出中等抗真菌活性对稻瘟病菌（Magnaporthe oryzae），禾镰刀菌（Fusarium graminearum）和菌核菌（Sclerotinia sclerotiorum）。