@article{oai:repo.qst.go.jp:00045671,
 author = {Fukuhara, Kiyoshi and Ohno, Akiko and Nakanishi, Ikuo and Imai, Kohei and Nakamura, Asao and Anzai, Kazunori and Miyata, Naoki and Okuda, Haruhiro and 中西 郁夫 and 安西 和紀},
 issue = {50},
 journal = {Tetrahedron Letters},
 month = {Oct},
 note = {The reaction of ninhydrin with (+)-catechin in the presence of TMSOTf resulted in condensation product, which consists of a 2:1 mixture of epimers at the C-2 position.  The antioxidative radical-scavenging activity of this catechin derivative against galvinoxyl radical, a stable oxyl radical, was significantly enhanced compared to (+)-catechin.  Our results provide a new method for chemical modification of natural phenolic antioxidants.},
 pages = {6989--6992},
 title = {Novel Ninhydrin Adduct of Catechin with Potent Antioxidative Activity},
 volume = {50},
 year = {2009}
}