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Phytochemical investigation on the acetone extract of  Salvia mirzayanii  Rech. f. and Esfand. aorded seven new isoprenoids including six new sesterterpenoids salvimirzacolide A-F ( 1–6 ), and one new nor-diterpenoid ( 7 ). Their structures were established by comprehensive spectroscopic and spectrometric data analysis (1D and 2D NMR, HRMS) and DP4+ NMR chemical shift probability calculation technique. Moreover, the absolute conguration of compounds was determined by using electronic circular dichroism spectroscopy. Evaluation of antiproliferative properties of compounds isolated against four human melanoma cancer cells displayed no cytotoxic activity at the concentration range used.

New Sesterterpenoids from Salvia mirzayanii Rech.f. and Esfand. Stereochemical Characterization by Computational Electronic Circular Dichroism