J Integr Plant Biol. ›› 2006, Vol. 48 ›› Issue (9): -.DOI: 10.1111/j.1744-7909.2006.00308.x

• Research Articles •    

New Diterpenoids from Andrographis paniculata (Burm. f.) Nees

Xiao-Qi Zhang, Guo-Cai Wang, Wen-Cai Ye, Qian Li, Guang-Xiong Zhou and Xin-Sheng Yao   

Abstract: To investigate diterpenoids from the aerial parts of Andrographis paniculata (Burm. f.) Nees, three new ent-labdane diterpenoids, namely 19-norandrographolides A–C (compounds 1–3), were isolated from the ethanolic extract of A. paniculata. Their structures were established by HRESIMS and NMR spectral data in combination with X-ray crystallographic analysis.(*Author for correspondence. Tel (Fax): +86 (0)20 8522 1559; E-mail: chywc@yahoo.com.cn)

Key words: Andrographis paniculata, diterpenoid, 19-norandrographolides A–C.

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