1. Graduate School of Pharmaceutical Sciences, Chiba University, 1-33, Yayoi, Inage, Chiba 263-8522, Japan, Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba 283-8555, Japan, Research and Development of Materials, Shiratori Pharmaceutical Co. Ltd., 6-11-24 Tsudanuma, Narashino, Chiba 275-0016, Japan, and Facultad de Ciencias Quimicas, Universidad de Guayaquil, Guayaquil, Ecuador