Two new diterpenoid lactones isolated from Andrographis paniculata
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Graphical Abstract
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Abstract
In the present study, two new diterpenoid lactones, 3-deoxy-andrographoside ( 1 ) and 14-deoxy-15-methoxy-androg-rapholide ( 2 ), were isolated from the aerial parts of Andrographis paniculata. Their structures were elucidated by combination of NMR, MS, and chemical methods. The configurations of 1 and 2 were established based on the analysis of ROESY data and single crystal X-ray diffraction experiment.
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