Novel reactions of lycoctonine analogs: unusual pyrolysis of C4–COOH and hydrogenolysis of N–C6 bond
作者:Pei Tang、Ling Wang、Qiao-Hong Chen、Feng-Peng Wang
DOI:10.1016/j.tet.2010.12.042
日期:2011.2
Pyrolysis of carboxylic acid group at C-4 of 2, an oxidationproduct from the C19-diterpenoid alkaloid lycoctonine 1, generated an unexpected but novel rearranged product 13 (37%). The structure of 13 was confirmed by its 2D NMR data and its single crystal X-raycrystallographic analysis. In addition, hydrogenolysis of 13 in the presence of acetic acid yielded the N–C6 bond fission products 16 and 17, which