A new cerebroside from the entomopathogenic fungus Ophiocordyceps longiissima: Structural-electronic and antioxidant relations. Experimental and DFT calculated studies

The chemical characterization of n-butanol soluble extract of the fungus Ophiocordyceps longiissima NBRC 106965 afforded a new cerebroside, 1-O-(β-d-glucopyranosyl)-(2S,3R,4E,8E)-2-[(2′R)-2′-hydroxyheptadecanoylamino]-9-methylheptadeca-4,8-diene-1,3-diol, trivially named ophiocordylongiiside A (1), in addition to 22E,24R-24-methylcholest-5,22-diene-3-O-β-D-O-glucopyranoside (2). The chemical structure of 1 was established based upon the by...