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O(2),1,9- trimethyluric acid and 1,3,7,9 - tetramethyluric acid in leaves of different coffeea species

by Wanner, H; Pesakova, M; Baumann, T.W.
Publisher: 1975Subject(s): COFFEA LIBERICA | COFFEA EXCELSA | PURINAS | HOJAS | COFFEA ARNOLDIANA | COFFEA ARUWIMIENSIS | COFFEA LIBERICA | COFFEA EXCELSA | PURINES | LEAVES | COFFEA LIBERICA | COFFEA EXCELSA | PURINE | FEUILLE In: Phytochemistry (RU) v. 14(3) p. 747-750Summary: O (2), 1,9 - Trimethyluric acid and 1,3,7,9 - tetramethyluric acid were isolated from young leaves of Coffea liberica, C. arnoldiana, C. dewevrei var. excelsa and var. aruwimiensis. The first purine has not been found before in nature; its identification required the synthesis of nearly all of its possible isomers
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++Dat. num. 16 ref. Sum. (En)

O (2), 1,9 - Trimethyluric acid and 1,3,7,9 - tetramethyluric acid were isolated from young leaves of Coffea liberica, C. arnoldiana, C. dewevrei var. excelsa and var. aruwimiensis. The first purine has not been found before in nature; its identification required the synthesis of nearly all of its possible isomers

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