Acetonitrile → Salicylhydroxamic Acid

Participants

Reaction Steps

Ten milliliters of unmodified M280 or M450 magnetic beads (Dynal) were gradually dehydrated into acetonitrile, and converted to aldehyde modified beads using oxalyl chloride activated N,N-dimethylsulfoxide and triethylamine in dichloromethane at -78° C. The resulting aldehyde bearing beads were gradually rehydrated and suspended in 5 mL of 0.1 M sodium acetate pH 5.5. The aldehyde groups were coupled N'-[(4-(N-hydroxycarbamoyl)-3-hydroxy-phenyl)methyl]-N-(2-{N-[2-(4-{N-[(N-hydroxycarbamoyl)-3-hydroxyphenyl)methyl]carbamoyl}-butanoylamino)ethyl]-4-(N-aminocarbamoyl)butanoylamino}ethyl)pentane-1,5-diamide (21Y-SHA-hydrazide) by adding 25 milligrams dissolved in 200 uL N,N-dimethylsulfoxide, and rotating coupling reaction over night at room temperature. The beads were then washed extensively with water and stored in 5 mL of 10% ethanol.

Provenance & Evidence