Add time:08/13/2019         Source:sciencedirect.com

Six new gallotannins: 1-O- and 1,4-di-O-galloyl proto-quercitols, 1,4-di-O- and 1,3,4-tri-O-galloylquinic acids and 4-O- and 5-O-galloyl(−)-shikimic acids have been isolated from Quercus mongolica and Q. myrsinaefolia and their structures elucidated on the basis of chemical and spectroscopic evidence.

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