Abstract
Eighteen aromatic abietane-type diterpenes, including three previously unreported compounds, Salkanoids A-C (1-3), were isolated from the roots of Salvia prattii. Their stuctures were extensively elucidated using 1D/2D NMR, high-resolution electrospray ionization mass spectrometry (HRESIMS) data, and ECD calculation. Among these, compounds 1, 6 and 7 belong to a class of diterpenes featuring a [5, 5]-oxaspirolactones moiety, a rare structure isolated from the Salvia plants. All the isolates were assessed for their protective effects against alcoholic liver disease using ethanol-induced AML-12 cell lines. The findings revealed that compounds 2, 5, 8 and 15 demonstrated potential protective activity.
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