Polyoxin B
5-[[2-Amino-5-O-(aminocarbonyl)-2-deoxy-L-xylonoyl]amino]-1,5-dideoxy-1-[3,4-dihydro-5-(hydroxymethyl)-2,4-dioxo-1(2H)-pyrimidinyl]-β-D-allofuranuronic Acid; Duoyangqing; Milpan; Polar; Polar antibiotic; (2S)-2-[[(2S,3S,4S)-2-Amino-5-carbamoyloxy-3,4-dihydroxypentanoyl]amino]-2-[(2R,3S,4R,5R)-3,4-dihydroxy-5-[5-(hydroxymethyl)-2,4-dioxopyrimidin-1-yl]oxolan-2-yl]acetic acid
Polyoxin B is a fungicide used in the protection of crops and pesticides. Polyoxin B is a natural product that is produced by the fungus Polyporus umbellatus. It is a synthetase inhibitor that specifically inhibits the enzyme malic acid synthetase in bacteria and fungi. Polyoxin B has been shown to have antifungal activity in vitro and to inhibit the growth of Cryptococcus neoformans, which may be due to its ability to inhibit terminal residues, such as acetate extract, bacterial strain, and synthase enzyme.
Synonyms
5-[[2-Amino-5-O-(aminocarbonyl)-2-deoxy-L-xylonoyl]amino]-1,5-dideoxy-1-[3,4-dihydro-5-(hydroxymethyl)-2,4-dioxo-1(2H)-pyrimidinyl]-β-D-allofuranuronic Acid; Duoyangqing; Milpan; Polar; Polar antibiotic; (2S)-2-[[(2S,3S,4S)-2-Amino-5-carbamoyloxy-3,4-dihydroxypentanoyl]amino]-2-[(2R,3S,4R,5R)-3,4-dihydroxy-5-[5-(hydroxymethyl)-2,4-dioxopyrimidin-1-yl]oxolan-2-yl]acetic acid
Molecular Formula
C₁₇H₂₅N₅O₁₃
Appearance
Off-white to yellow to brown powder.
Melting Point
150-153°C (dec)
Storage and Stability
May be stored at RT for short-term only. Long-term storage is recommended at 4°C. Protect from air, light and moisture.
Important Note
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
Toxicity and Hazards
All products should be handled by qualified personnel only, trained in laboratory procedures.
