Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan.
Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan.
Chem Biodivers. 2023 Apr;20(4):e202300131. doi: 10.1002/cbdv.202300131. Epub 2023 Mar 27.
Two new eremophilane-type sesquiterpenoids, fusumaols A (1) and B (2), were isolated from the stem-leafy liverwort, Bazzania japonica collected in Mori-Machi, Shizuoka, Japan. Their structures were established using extensive spectroscopic (IR, MS, and 2D NMR) data, and the absolute configuration of 1 was determined by the modified Mosher's method. This is the first time eremophilanes have been discovered in the liverwort genus Bazzania. Compounds 1 and 2 were evaluated for their repellent activity against the adult population of the rice weevil Sitophilus zeamais using the modified filter paper impregnation method. Both sesquiterpenoids showed moderate repellent activities.
从日本静冈县森町采集的茎叶状地钱中分离得到两种新的半日花烷型倍半萜，fusumaols A（1）和 B（2）。通过广泛的光谱（IR、MS 和 2D NMR）数据确定了它们的结构，并且通过改进的 Mosher 法确定了 1 的绝对构型。这是半日花烷首次在地钱属中被发现。采用改良滤纸浸渍法，评估了化合物 1 和 2 对玉米象成虫种群的驱避活性。两种倍半萜均表现出中等的驱避活性。
