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Bioactive Natural Products (Part I) - download pdf or read online

By Atta-ur-Rahman

ISBN-10: 0444514155

ISBN-13: 9780444514158

The booklet comprises articles written by way of prime professionals of their respective fields of study. It provides present frontiers and destiny directions for study according to very important discoveries made within the box of bioactive normal products.- quantity 28 is a part of an exceptional family members of precious reference books- Illustrates the kinds of severe discoveries that emerge from the interface of chemistry and biology- Contributions are from well-respected authors

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Extra resources for Bioactive Natural Products (Part I)

Example text

Fig. (5). OCH, 41 50 42 43 44 45 46 47 R = glc R«gal R-rha R«glc R-rhi R'^CHj R-'R^'H R'«CHj R-'-R'-^H R'-R^^H R"«CHj R'=R'"=CH3 R*»H R'-R^-CHj R--H In particular compound 40 was purified by Sephadex LH-20 column from the chloroform-methanol extract, while compounds 41-42 were obtained similarly by using Sephadex LH-20 column and Lobar Lichroprep RP 8 chromatography. The structures and molecular formulas of these new derivatives were determined bv positive ion FAB MS and UV spectra, ID and 2 D - ' H , ' ^ C , and C DEPT NMR data.

Pharm, Bull, 1997, 45, 505-508. ; Kusano, G. Chem. Pharm. Bull, 1997, 45, 700-705. ; Kusano, G. Chem. Pharm, Bull, 1998,^(5,1048-1050. ; Minoura, K; Kusano, G. Chem. Pharm. Bull, 1998, 46, 1416-1420. ; Kusano, G. Chem. Pharm. Bull, 1999, ^7,472-476. ; Kusano, G. Chem. Pharm. Bull, 2000,48,1281-1285. ; Kusano, G. Chem. Pharm. Bull, 1999, 47, 907908. ; Kusano, G. Chem. Pharm. Bull, 2001, 49, 14871491. ; Kusano, G. Chem. Pharm. Bull, 2001,49,492-496. Ko. -N. J. Nat. , 1999, 62,164-166. H. YakhakHoechi, 1997,41,439-443.

2 Hz). 83, attributed to H-6, determined the unusual 5,7,8-trihydroxy substitution of ring A. 1 ppm in the ^^C NMR spectrum. The exact position of the methoxyl group was established by typical methoxylation shift observed in the C NMR spectrum with respect to 8-hydroxy naringenin: downfield shift of C-4' (ca. 5 ppm) and upfield shifts of C-3* (ca. 3 ppm), C-5' (ca. 3 ppm), and C-T (ca. 5 ppm) suggested the presence of the methoxyl group at C-4'. 95 (H-3* and H-5').

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Bioactive Natural Products (Part I) by Atta-ur-Rahman


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