Abstract

Three new compounds named tanshinoic acid A (1), tanshinoic acid B (2), and tanshinoic acid C (3) were isolated from the rhizomes of Salvia miltiorrhiza, together with two known compounds methyl salvianolate A (4) and methyl salvianolate C (5). Their structures were determined on the basis of spectroscopic data (UV, IR, HRESIMS, 1 D and 2 D NMR). The in vitro assay indicated that 4 and 5 could improve the survived rate of cells on oxygen glucose deprivation (OGD) induced neurons damage model and glutamate-induced neurons damage model at a concentration of 10 μM.

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