1. Key Laboratory for the Chemistry
and Molecular Engineering of Medicinal Resources (Ministry of Education), Department of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, People’s
Republic of China
2. Laboratoire
DECOMET, Institut de Chimie de Strasbourg, Université de Strasbourg, CNRS-UMR 7177, 4 rue Blaise Pascal, CS
90032, 67081 Strasbourg Cedex, France