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Two new guaiane-type sesquiterpenes, kwangsiensis A and B (1-2) were isolated from the roots of Curcuma kwangsiensis. Their structures were elucidated by extensive spectroscopic methods, including NMR, circular dichroism (CD) and high-resolution mass-spectrometry. The anti-inflammatory activity of the two compounds was evaluated on the basis of their inhibition of lipopolysaccharide (LPS)-induced nitric oxide (NO) production in mouse RAW 264.7 macrophages. Compounds 1 and 2 showed moderatedoi:10.6084/m9.figshare.5426428 fatcat:wscgnwkedvdzjluphjfymwynwa