a
Department of Chemistry, Wake Forest University, Winston-Salem, USA
E-mail: bierbau@wfu.edu
;
Fax: +1 336-758-4656
;
Tel: +1 336-758-3507
b
School of Pharmaceutical Sciences, Tianjin Medical University, Tianjin 300070, PR China
c
Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest University Health Sciences, Winston-Salem, USA