. School of Chemistry and Chemical Engineering;
Nanning & Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development;
Guangxi University;
Nanning 530004;
P. R. China;
Department of Chemistry;
Cleveland State University;
Cleveland;
OH 44115;
USA;
Guangxi Key Laboratory of Traditional Chinese Medicine Quality Standards;
Guangxi Institute of Traditional Medical and Pharmaceutical Sciences;
Nanning 530022;
P. R. China;