two-dimensionalNMR相关论文
Structure elucidation and NMR assignments of two unusual xanthones from Lomatogonium carinthiacum (W
Two new unusual xanthones, 5-O-β-D-glucopyranosyl-1, 3, 8-trihydroxy-5, 6, 7,8-tetrahydroxanthone (1),1,3,5,8-tetrahydr......
