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Aldgamycins J-O, 16-Membered Macrolides with a Branched Octose Unit from Streptomycetes sp. and Their Antibacterial Activities

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Aldgamycins J-O, 16-Membered Macrolides with a Branched Octose Unit from Streptomycetes sp. and Their Antibacterial Activities

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作者
Wang CX;Ding R;Jiang ST;Tang JS;Hu D;Chen GD; Lin F;Hong K;Yao XS;Gao H*
刊物名称
Journal of natural products
2016
79
10
2446-2454

{Author}: Wang CX;Ding R;Jiang ST;Tang JS;Hu D;Chen GD; Lin F;Hong K;Yao XS;Gao H*;

{Journal}: Journal of natural products

{Year}: 2016

{Volume}: 79

{Issue}:10

{Pages}: 2446-2454

{Abstract}:Six new 16-membered macrolides with a rare branched octose unit, aldgamycins J-O (1-6), along with two known compounds, swalpamycin B (7) and chalcomycin (8), were isolated from Streptomyces sp. HK-2006-1. Their structures were determined by detailed spectroscopic and X-ray crystallographic analysis. Natural products containing branched sugar units are rare. Aldgaropyranose and decarboxylated aldgaropyranose are branched octoses, specifically aldgarose-type branched octose. Until now, only 11 compounds have been reported to contain an aldgarose-type branched octose. The discovery of aldgamycins J-O (1-6) adds new members of this type of natural product. All the compounds (1-8) herein were tested for antimicrobial activities against Gram-positive Staphylococcus aureus 209P, Gram-negative Escherichia coli ATCC0111, and two fungi, Candida albicans FIM709 and Aspergillus niger R330. Most of these compounds showed antibacterial activity against S. aureus. Their preliminary structure-activity relationships are proposed.

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