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  • Title: Preparative isolation and purification of two amides from Mallotus lianus Croiz by high-speed counter-current chromatography.
    Author: Jiang L, Lu Y, He S, Pan Y, Sun C, Wu T.
    Journal: J Sep Sci; 2008 Dec; 31(22):3930-5. PubMed ID: 18985666.
    Abstract:
    High-speed counter-current chromatography (HSCCC) was applied to the preparative isolation and purification of two amides from Mallotus lianus Croiz. In a single HSCCC separation, using the two-phase solvent system composed of n-hexane/ethyl acetate/methanol/water (5:1:5:1 v/v), 247.5 mg of the enriched crude sample was separated to afford 10.3 mg of N-isobutyl-2E,4E,12Z-octadecatrienamide and 15.7 mg of (7Z,10Z,18Z)tricosa-7,10,18-trienamide, a novel compound, with the purities of 98.0 and 94.6%, respectively. The HSCCC fractions were analyzed by HPLC and chemical structures of the compounds were identified by 1D- and 2D-NMR, ESI-, and GC-MS.
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