Resonances of H and C atoms in isoxazolinyl steroids, i.e., structural analogs of ponasterone A and 9α,20-dihydroxyecdysone, were assigned by two-dimensional NMR spectroscopy. Characteristic effects of neighboring functional groups on the chemical shifts of C and H atoms in the NMR spectra were revealed. Data for the spectral characteristics of the previously described compounds were refined.

中文翻译：

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侧链带有异恶唑啉环的松甾酮 α 和 9α,20-二羟基蜕皮激素的结构类似物的 NMR 光谱数据分析

异恶唑啉基类固醇（即松甾酮 A 和 9α,20-二羟基蜕皮激素的结构类似物）中的 H 和 C 原子的共振通过二维 NMR 光谱进行分配。揭示了相邻官能团对 NMR 光谱中 C 和 H 原子化学位移的特征影响。改进了先前描述的化合物的光谱特征数据。