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Chem Pharm Bull (Tokyo) 2016 Nov 01;6411:1654-1657. doi: 10.1248/cpb.c16-00585.
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Pyrrole Oligoglycosides from the Starfish Acanthaster planci Suppress Lipopolysaccharide-Induced Nitric Oxide Production in RAW264.7 Macrophages.

Vien LT , Hanh TT , Huong PT , Dang NH , Thanh NV , Lyakhova E , Cuong NX , Nam NH , Kiem PV , Kicha A , Minh CV .

Two new pyrrole oligoglycosides, plancipyrrosides A and B (1 and 2), were isolated from methanol extract of the Vietnamese starfish Acanthaster planci using various chromatographic procedures. Their structures were elucidated by spectroscopic methods including one and two dimensional (1D- and 2D)-NMR and Fourier transform ion cyclotron resonance (FT-ICR)-MS. The finding of 1 and 2 represents the third case of pyrrole oligoglycosides obtaining reported to date. Moreover, plancipyrroside B (2) exhibits a potent inhibitory effect on lipopolysaccharide (LPS)-induced nitric oxide (NO) production in RAW264.7 cells with IC50 of 5.94±0.34 µM, whereas plancipyrroside A (1) shows this inhibitory activity with IC50 of 16.61±1.85 µM.

PubMed ID: 27600480
Article link: Chem Pharm Bull (Tokyo)