Phosalacine

Phosalacine is a natural antimicrobial and herbicidal compound that has been isolated from the Actinobacteria Kitasatosporia phosalacinea.

Phosalacine
Names
IUPAC name
(2S)-2-[[(2S)-2-[[(2S)-2-amino-4-[hydroxy(methyl)phosphoryl]butanoyl]amino]propanoyl]amino]-4-methylpentanoic acid
Other names
(2S)-2-Amino-4-(hydroxymethylphosphinyl)butanoyl-L-alanyl-L-leucine
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/C14H28N3O6P/c1-8(2)7-11(14(20)21)17-12(18)9(3)16-13(19)10(15)5-6-24(4,22)23/h8-11H,5-7,15H2,1-4H3,(H,16,19)(H,17,18)(H,20,21)(H,22,23)/t9-,10-,11-/m0/s1
    Key: GRIZBDACBCXJCF-DCAQKATOSA-N
  • C[C@@H](C(=O)N[C@@H](CC(C)C)C(=O)O)NC(=O)[C@H](CCP(=O)(C)O)N
Properties
C14H28N3O6P
Molar mass 365.367 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

It is a tripeptide consisting of the amino acids glufosinate (phosphinothricin), alanine, and leucine. It is similar in structure to bialaphos, differing by replacement of the terminal alanine with leucine.

Phosalacine has antimicrobial activity against Gram-positive and Gram-negative bacteria and some fungi. It also shows herbicidal activity against alfalfa. It is believed that the herbicidal activity is due to the slow release of glufosinate, which is a commercially-used broad spectrum herbicide.

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