Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Lin Kuaile and Cai Zhengyan and Wang Fei and Zhang Wei and Zhou Weicheng,Synthesis and Biological Evaluation of Xanthine Derivatives on Dipeptidyl Peptidase 4,Chemical and Pharmaceutical Bulletin,00092363,The Pharmaceutical Society of Japan,2013,61,4,477-482,https://cir.nii.ac.jp/crid/1390282679153876864,https://doi.org/10.1248/cpb.c12-01046