Two new C19-diterpenoid alkaloids, davidisines A （1） and B （2） along with thirteen known alkaloids were isolated from the whole herb of Delphinium davidii Franch. Their structures were established by spectral meth...Two new C19-diterpenoid alkaloids, davidisines A （1） and B （2） along with thirteen known alkaloids were isolated from the whole herb of Delphinium davidii Franch. Their structures were established by spectral methods, especially 2D NMR techniques.展开更多
目的研究天台山翠雀花Delphinium taiantishanense W.J.Zhang et G.H.Chen中生物碱的化学成分。方法采用酸提碱沉法提取总碱,硅胶层析法分离,波谱法鉴定结构。结果从中分得7个单体化合物。结论应用光谱法鉴定了这些化合物的结构。7个化...目的研究天台山翠雀花Delphinium taiantishanense W.J.Zhang et G.H.Chen中生物碱的化学成分。方法采用酸提碱沉法提取总碱,硅胶层析法分离,波谱法鉴定结构。结果从中分得7个单体化合物。结论应用光谱法鉴定了这些化合物的结构。7个化合物均为已知的C19-二萜生物碱,分别为:6-acetyldelpheline、deltaline、氨茴酰牛扁碱、牛扁碱、德尔色明甲、德尔色明乙和甲基牛扁碱。展开更多
A new synthesis of the bridged [6-6-6] ABE tricyclic ring analogues of methyllycaconitine with the C-1 oxygenated substituents has been developed using an efficient aza-annulation of β-enamino ketone followed by a fa...A new synthesis of the bridged [6-6-6] ABE tricyclic ring analogues of methyllycaconitine with the C-1 oxygenated substituents has been developed using an efficient aza-annulation of β-enamino ketone followed by a facile decarboxylation to form BE rings.Subsequent elaboration to form the A ring was achieved by a transannular acyl radical cyclization with concomitant equipment of the key C-1 oxygen functionality.展开更多
文摘Two new C19-diterpenoid alkaloids, davidisines A （1） and B （2） along with thirteen known alkaloids were isolated from the whole herb of Delphinium davidii Franch. Their structures were established by spectral methods, especially 2D NMR techniques.
文摘目的研究天台山翠雀花Delphinium taiantishanense W.J.Zhang et G.H.Chen中生物碱的化学成分。方法采用酸提碱沉法提取总碱,硅胶层析法分离,波谱法鉴定结构。结果从中分得7个单体化合物。结论应用光谱法鉴定了这些化合物的结构。7个化合物均为已知的C19-二萜生物碱,分别为:6-acetyldelpheline、deltaline、氨茴酰牛扁碱、牛扁碱、德尔色明甲、德尔色明乙和甲基牛扁碱。
基金the National Natural Science Foundation of China(31860095)Guizhou Science and Technology Foundation of China(QKHJC[2018]1193)Zhuhai Premier-Discipline Enhancement Scheme of Pharmacology,Zhuhai Campus of Zunyi Medical University
基金National Natural Science Foundation of China (Nos.21472129 and 21871190) for financial support of this work by grants。
文摘A new synthesis of the bridged [6-6-6] ABE tricyclic ring analogues of methyllycaconitine with the C-1 oxygenated substituents has been developed using an efficient aza-annulation of β-enamino ketone followed by a facile decarboxylation to form BE rings.Subsequent elaboration to form the A ring was achieved by a transannular acyl radical cyclization with concomitant equipment of the key C-1 oxygen functionality.
