TAILIEUCHUNG - Isolation and structural elucidation of terpenoids from Vietnamese Aglaia species

Phytochemical analysis of the leaves of Aglaia gigantea, Aglaia dasyclada and Aglaia oligophylla collected in Vietnam yielded three terpenoids, which included two triterpene Foveolin B (1), Niloticin (2) and one tetraterpene Lutein (3). The structures of these compounds were elucidated through extensive 1D and 2D NMR spectroscopy and analysis of their mass spectrometric data. | Journal of Chemistry Vol. 45 6A P. 346 - 353 2007 ISOLATION AND STRUCTURAL ELUCIDATION OF TERPENOIDS FROM VIETNAMESE AGLAIA SPECIES Received 15 October 2007 DUONG NGOC TU1 DUONG ANH TUAN1 AND PETER PROKSCH2 institute of Chemistry Vietnamese Academic of Sciences and Technology 2Institut fur Pharmazeutische Biologie und Biotechnologie Heinrich-Heine-Universitat Duesseldorf Germany SUMMARY Phytochemical analysis of the leaves of Aglaia gigantea Aglaia dasyclada and Aglaia oligophylla collected in Vietnam yielded three terpenoids which included two triterpene Foveolin B 1 Niloticin 2 and one tetraterpene Lutein 3 . The structures of these compounds were elucidated through extensive 1D and 2D NMR spectroscopy and analysis of their mass spectrometric data. I - INTRODUCTION The genus Aglaia which belongs to the Meliaceae family has been described to yield a variety of different classes of compounds such a as flavonoids lignans cyclopentabenzofurans and putrescine bisamides. In this paper we report two triterpenoids from Aglaia gigantea and Aglaia dasyclada and one tetraterpenoid from Aglaia oligophylla. 346 II - EXPERIMENTAL General experimental procedures. Optical rotations were recorded on a Perkin-Elmer-241 MC polarimeter. Routine detection was at 254 nm in aqueous MeOH. Vacuum liquid chromatography VLC was performed on Silica gel 60. TLC was performed on TLC plates precoated with Si 60 F254 Merck Darmstadt Germany . The compounds were detected from their UV absorbance and with Anisaldehyde H2SO4 spray reagent. 1D and 2D NMR spectra chemical shifts in ppm were recorded on Bruker DRX 500 spectrometers using standard Bruker software and DMSO-d6 was used as a solvent. ESI mass spectra were obtained on a Thermofinnigan LCQ DECA mass spectrometer coupled to an Agilent 1100 HPLC system equipped with a photodiode array detector. Measurements were done at Institute of Pharmaceutical Biology and Biotechnology University of Heirich-Heine-Dusseldorf. Plant materials Leaves of .

• Hoá học
• Công nghệ hóa
• Structural elucidation of terpenoids
• Vietnamese Aglaia species
• Phytochemical analysis
• Hóa hữu cơ
• Kỹ thuật hệ thống công nghệ hóa học
• Hệ thống công nghệ hóa học
• Công nghệ hóa học
• Tối ưu hóa
• Quá trình công nghệ hóa học
• Phương pháp giải thích
• Quy hoạch toán học
• Phương pháp gradient
• Mô hình hóa công nghệ hóa học
• Nghiên cứu công nghệ hóa học
• Mô tả công nghệ hóa học
• giáo trình công nghệ hóa học
• thiết bị công nghệ hóa học
• bài giảng công nghệ hóa học
• công nghệ hóa chất
• tài liệu công nghệ hóa chất
• áp dụng công nghệ hóa chất
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• nghiên cứu công nghệ hóa chất
• công nghệ hóa dầu
• bài giảng công nghệ hóa dầu
• giáo trình công nghệ hóa dầu
• tài liệu công nghệ hóa dầu
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