@article{oai:nagasaki-u.repo.nii.ac.jp:00017086,
 author = {Matsuo, Yosuke and Tanaka, Takashi and Kouno, Isao},
 issue = {12},
 journal = {Tetrahedron Letters},
 month = {Mar},
 note = {An unstable intermediate proepitheaflagallin B (2), a precursor of proepitheaflagallin (3), was isolated as an enzymatic oxidation product of (?)-epigallocatechin (1), and the structure of 2 was determined based on spectroscopic data. The structure and its decomposition revealed that the detailed production mechanism of proepitheaflagallin (3) via a bicyclo[3.2.1]octane-type intermediate was related to that of major black tea pigments, theaflavins., Tetrahedron Letters, 50(12), pp.1348-1351; 2009},
 pages = {1348--1351},
 title = {Production mechanism of proepitheaflagallin, a precursor of benzotropolone-type black tea pigment, derived from epigallocatechin via a bicyclo[3.2.1]octane-type intermediate},
 volume = {50},
 year = {2009}
}