Chemical investigation of the dichloromethane extract of Hypnea nidulans Setchell led to the isolation of squalene (1), β-sitosterol (2), a mixture of ursolic acid (3) andoleanolic acid (4) in a 3:1 ratio, chrorophyll a (5), and hydrocarbons. The structures of these compounds were identified by comparison of their NMR data with those reported in the literature.
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