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New minor cyclic peptides, named arenariphilin C 1 and arenariphilin D 2, were isolated from the whole plants of Arenaria oreophila (Caryophyllaceae). Their structures were determined as cyclo(Pro1-Pro2-Leu1-Leu2-Phe-Ser-Gly-Thr) and cyclo (Ser-Cys) on the basis of spectroscopic data, especially by two-dimension NMR (2D NMR) technologies.
They were isolated from the whole plant of Arenaria oreophila (Caryophyllaceae). Their structures were determined as cyclo (Pro1-Pro2-Leu1-Leu2-Phe-Ser-Gly- Thr) and cyclo (Ser-Cys) on the basis of spectroscopic data, especially by two-dimensional NMR (2D NMR) technologies.