New 3,4-seco-cycloartane triterpenes from Gardenia sootepensis

Abstract

Two new 3,4-seco-cycloartane triterpenes, named sootepins H (1) and I (2), were isolated from the ethyl acetate extract of the leaves and twigs of Gardenia sootepensis. Their structures were elucidated on the basis of 1D- and 2D-nuclear magnetic resonance (NMR) analysis, as well as high-resolution mass spectrometry (HR-MS), infrared (IR), and ultra violet (UV).

Keywords:

• Rubiaceae
• Gardenia sootepensis
• cycloartane
• triterpenes
• sootepins H-I

Acknowledgements

The authors are grateful to the members of the analytical group from the State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, for measuring the [α], IR, UV, NMR and MS spectra.