Citation:
Xiang Li Shen, Qiao Hong Chen, Dong Lin Chen, Feng Peng Wang. Two novel aconane-type diterpenes derived from C-nor-C19-diterpenoid alkaloid[J]. Chinese Chemical Letters,
;2009, 20(4): 431-434.
doi:
10.1016/j.cclet.2008.12.028
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Two novel C-nor-B-homo aconane-type diterpenes 4 and 5, featuring a unique eight-membered ring system, were obtained by the treatment of C-nor-C19-diterpenoid alkaloid 3 with HNO2 in 8% and 21% yields, respectively. Structures of these two compounds were established based on the combination of spectroscopic data, including HRESIMS, 1D and 2D NMR data.A plausible mechanism for the formation of 4 and 5 is also presented.
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Keywords:
- C19-diterpenoid alkaloid,
- C-nor-B-homo-aconane,
- Rearrangement,
- Imine
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