a School of Pharmaceutical Sciences, Dalian Medical University, Dalian 116027, PR China;b School of Traditional Chinese Medicines, Shenyang Pharmaceutical University, Shengyang 110016, China
Abstract:
A new ent-labdane diterpenoid lactone with a new natural product was isolated from Andrographis paniculata. Their structures were elucidated on the basis of spectral evidences including 2D NMR.