1. Key Laboratory for the Synthesis and Application of Organic Functional MoleculesCollege of Chemistry and Chemical EngineeringHubei University Wuhan 430062 P.R. China
2. Key Laboratory for the Chemistry and Molecular Engineering of, Medicinal ResourcesSchool of Chemistry and Pharmaceutical SciencesGuangxi Normal University Guilin 541004 P.R. China
3. Institut de Chimie de Strasbourg, CNRS-UMR7177Université de Strasbourg 4 rue Blaise Pascal 67070 Strasbourg France