Citation
M. A. Sukari, . and Neoh B.K., . and M. Rahmani, . and M. N. Lajis, . and Ee G. C. L., . and Yap A. L. C., . (2006) Bioactive constituents from Kaempferia species Zingiberaceae. [Proceedings Paper]
Abstract
A new cyclohexane epoxide angustifolienol together with 6-methylzeylenol which is new to the species were isolated from rhizomes of Kaempferia angustifolia. Acetylation of angustifolienol gave triacetoxyangustifolienol and diacetoxyangustifolienol. Two known cyclohexane diepoxides crotepoxide and boesenboxide 2;-hydroxy-4 4; 6;-trimethoxychalcone and zeylenol were also isolated from the rhizomes of K. angustifolia. Isolation of extracts from K. rotunda has yielded five pure compounds; crotepoxide stigmasterol benzoic acid tetracosanoic acid and -sitosterol. Four pure flavanoids were isolated from Boesenbergia rotunda Kaempferia pandurata which were pinostrobin cardamonin alpinetin and pinocembrin. The structure of these compounds were determined by spectroscopic methods such as infrared IR nuclear magnetic resonance 1H 13c and 2D-NMR and mass spectrometry MS and by comparison with the data reported previously.
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Abstract
A new cyclohexane epoxide angustifolienol together with 6-methylzeylenol which is new to the species were isolated from rhizomes of Kaempferia angustifolia. Acetylation of angustifolienol gave triacetoxyangustifolienol and diacetoxyangustifolienol. Two known cyclohexane diepoxides crotepoxide and boesenboxide 2;-hydroxy-4 4; 6;-trimethoxychalcone and zeylenol were also isolated from the rhizomes of K. angustifolia. Isolation of extracts from K. rotunda has yielded five pure compounds; crotepoxide stigmasterol benzoic acid tetracosanoic acid and -sitosterol. Four pure flavanoids were isolated from Boesenbergia rotunda Kaempferia pandurata which were pinostrobin cardamonin alpinetin and pinocembrin. The structure of these compounds were determined by spectroscopic methods such as infrared IR nuclear magnetic resonance 1H 13c and 2D-NMR and mass spectrometry MS and by comparison with the data reported previously.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. RS180 M3I61 2005 Call Number |
| AGROVOC Term: | Kaempferia |
| AGROVOC Term: | Zingiberaceae |
| AGROVOC Term: | Acetylation |
| AGROVOC Term: | Rhizomes |
| AGROVOC Term: | Extracts |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:14 |
| URI: | http://webagris.upm.edu.my/id/eprint/11717 |
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