Cytotoxic sesquiterpenoid dimers from the resin of Commiphora myrrha Engl.

Seven undescribed sesquiterpenoid dimers, commiphomyrones A - G, together with three known analogs, were isolated from the resin of Commiphora myrrha Engl.. The structures of the undescribed compounds were elucidated based on a comprehensive analysis of spectroscopic data (NMR, UV, IR, and MS), and the absolute configurations were defined by comparing the experimental and calculated ECD spectra as well as by performing X-ray crystallographic analysis.

Anti-inflammatory flavonoid derivatives from the heartwood of T. Chen.

Two pairs of flavonoid enantiomers (/ and /) together with three known analogues (-) were isolated from the heartwood of T. Chen. Their structures were elucidated by extensive spectroscopic analysis (1 D and 2 D NMR, UV, IR, and HRMS) and experimental and calculated ECD data.

[One new cembranoid diterpene from gum resin of Boswellia carterii].

This study aims to study the chemical components from the gum resin of Boswellia carterii. Five cembranoid diterpenes were isolated from the gum resin of B. carterii by various of column chromatographies including silica gel, Sephadex LH-20, and semi-preparative HPLC.