Abstract
Four iridoids (1-4), five iridoid glucosides (5-9), and three triterpenoids (10-12) were isolated from the ethyl acetate soluble fraction of 70% Me2CO extract of the aerial parts of Viburnum ternatum through various column chromatographies over silica gel, ODS, Sephadex LH-20 and MCI. Their structures were elucidated as ternatumin A (1), 2,9-dioxatricyclo[4.3.1.03，7]decanes (2), 7,10,2'-triacetylsuspensolide F (3), 7,10,2',3'-tetraacetylsuspensolide F (4), viburtinoside IV (5), viburtinoside II (6), viburtinoside B (7), luzonoside A (8), luzonoside B (9), 2α,3β,24-trihydroxy-12-ursen-28-oic acid (10), 6-hydroxy-20(29)-lupen-3-one (11), and pomalic acid (12) based on the their chromatographic properties, chemical and physicochemical methods, and spectroscopic data. Compound 1 was a new compound and compounds 3-12 were isolated from this plant for the first time. Furthermore, we note here the first isolation of compound 2 as a new natural product.
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