TAILIEUCHUNG - Aglaxiflorin D from Aglaia abbriviata collected in Nghe An

Phytochemical analysis of the leaves of Aglaia abbriviata collected in Nghean yielded a aglain derivative, which is structurally similar groups of compounds to rocaglamides. The structure of this compound Aglaxiflorin D (1) was elucidated through extensive 1D and 2D NMR spectroscopy and analysis of their mass spectrometric (ESI-MS) data. | Journal of Chemistry Vol. 45 6A P. 362 - 366 2007 AGLAXIFLORIN D FROM AGLAIA ABBRIVIATA COLLECTED IN NGHEAN 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 Dasseldorf Germany SUMMARY Phytochemical analysis of the leaves of Aglaia abbriviata collected in Nghean yielded a aglain derivative which is structurally similar groups of compounds to rocaglamides. The structure of this compound Aglaxiflorin D 1 was elucidated through extensive 1D and 2D NMR spectroscopy and analysis of their mass spectrometric ESI-MS data. I - INTRODUCTION The genus Aglaia which belongs to the Meliaceae family has been described to yield a variety of different rocaglamide derivatives which are responsible for strongly insecticidal activity. To date more than fifty natural occurring rocaglamide derivatives were isolated from different Aglaia species collected mainly in Indonesia China Thailand and Vietnam. Aglains have been shown to be devoid of insecticidal activity against Nugroho et al. 1997 . However rocaglamides and aglains have been hypothesized to originate biosynthetically from common structurally related precursors that include cinnamic acid amides and flavonoids Proksch et al. 2001 see Fig. 1 . In this paper we report on isolation and structure elucidation of a Aglain Aglaxiflorin D from Aglaia abbriviata. II - EXPERIMENTAL General experimental procedures. Optical rotations were recorded on a Perkin-Elmer-241 MC polarimeter. For HPLC analysis samples 362 were injected into an HPLC system with a photodiode-array detector Dionex Munich Germany . Routine detection was at 254 nm in aqueous MeOH. The separation column 125 x 4 mm . was prefilled with C18 Knauer Berlin Germany . Semi-preparative HPLC was performed on Merck-Hitachi Eurospher-100-C18 pump L-7100 and L-7400 UV detector. TLC was .

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