Bioassay-guided isolation of the active hexane fractions of Curcuma zedoaria led to the identification of five pure compounds, namely, curzerenone (1), neocurdione (2), curdione (3), alismol (4), and zederone (5) and a mixture of sterols, namely, campesterol (6), stigmasterol (7), and β -sitosterol (8). Alismol has never been reported to be present in Curcuma zedoaria. All isolated compounds ex...

Curcuma Kwangsiensis S. G. Lee et C. F. Liang originates from the rhizome of the Curcuma Genus which is commonly used in traditional Chinese medicine. Pharmacological studies showed that curzerenone [1], curcumol, curdione, β-elemene, germacrone were the active ingredients of volatile oil from rhizoma curcuma. In addition, they had the effect of anti-inflammation, antibiosis [2], antivirus [3],...

Two new sesquiterpenoids-13-hydroxycurzerenone (1) and 1-oxocurzerenone (2)-have been isolated from the rhizomes of Curcuma zedoaria, together with 13 known compounds (3-15). The structures of two new compounds were determined through spectroscopic and MS analyses. Among the isolated compounds, 13-hydroxycurzerenone (1), 1-oxocurzerenone (2), curzerenone (3), germacrone (4), curcolone (5), proc...

A preparative gas chromatography (pGC) method was developed for the separation of volatile components from the methanol extract of Curcuma rhizome. The compounds were separated on a stainless steel column packed with 10% OV-101 (3 m × 6 mm, i.d.), and then, the effluent was split into two gas flows. One percent of the effluent passed to the flame ionization detector (FID) for detection and the ...

Wild ginger (Siphonochilus aethiopicus (Schweinf) B.L Burtt) is used in traditional medicines in the West and South of Africa. In the present study, the crude hexane extract of wild ginger was evaluated for in vitro bioactivity. The components isolated from the plant for the first time are: epi-curzerenone, furanodienone (sesquiterpenes), 8(17),12E-labdadiene-15,16-dial, 15-hydroxy-8(17),12E-la...

The present study was aimed to investigate the chemical constituents of Curcuma elata Roxb. (Zingiberaceae) rhizomes originating in Thailand. Ten sesquiterpenes, germacrone (1), curzerenone (2), isofuranodienone (3), furanodienone (4), curdione (5), neocurdione (6), zederone (7), curcumenone (8), 13-hydroxygermacrone (9) and zedoarondiol (10), and four diarylheptanoids, 3-hydroxy-5-platyphyllon...