4-{[2-(Methoxycarbonyl)phenyl]amino}-2-methyl-4-oxobutanoic acid amide, the diterpenoid alkaloid delavaine B, and the new talassamine-type alkaloid 15-epinaviculine B were isolated for the first time from the aerial part of Delphinium oreophilum Huth. The structures of the compounds were elucidated using 1D and 2D NMR spectroscopy, mass spectrometry, and an X-ray crystal structure analysis for the new alkaloid. The stereochemistry of the talassamine framework and H-bonds in the crystal of 15-epinaviculine B were analyzed.

中文翻译：

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来自飞燕草的生物碱。新型二萜生物碱 15-Epinaviculine B

首次从空中分离得到4-{[2-(甲氧基羰基)苯基]氨基}-2-甲基-4-氧代丁酰胺、二萜生物碱delavaine B和新塔拉萨胺型生物碱15-epinaviculine B飞燕草的一部分。使用一维和二维核磁共振波谱、质谱分析以及新生物碱的 X 射线晶体结构分析阐明了化合物的结构。分析了15-epinaviculine B晶体中塔拉萨胺骨架和氢键的立体化学。