Novel rearrangement products of the degradated derivative of maoecrystal A, an ent-kaurane-type diterpene

Abstract

Two novel rearrangement products of the degradated derivative of maoecrystal A (1), an ent-kaurane-type diterpene via a Wagner–Meerwein process, have been reported.

Keywords:

• Diterpene
• ent-kaurane-type diterpene
• Maoecrystal A
• Rearrangement

Acknowledgements

Financial support for this research was provided by the National Natural Science Foundation of China (No. 0040505401008). The authors also acknowledge with thanks the help of Professor Han-Dong Sun, Kumming Institution of Botany, Chinese Academy of Sciences, in the collection and extraction of the plant (Isodon eriocalyx) materials.