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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 887680Generated: October 30, 2026

Water → HCID 178493332, compound

https://huagongshe.com/reaction/887680

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantPyridineHCID 1049—
ReactantHydroxylamine HClHCID 21645—
Reactant(8S)-4',9,9'-trihydroxy-6'-methoxy-1,1',3',5',8'-pentaoxospiro[6,7-dihydro-2H-cyclopenta[g]isoquinoline-8,2'-cyclopenta[b]naphthalene]-3-carbaldehydeHCID 178493334—
SolventDimethylformamideHCID 6228—
ProductHCID 178493332HCID 178493332—

Reaction Steps

Ten (10) mg (19.4 μmol) fredericamycin aldehyde (4) are dissolved in 2 mL DMF. After addition of 3.1 mg (44.6 μmol) hydroxylammonium chloride, 3.2 μl pyridine are added. Stirring for 2 h at room temperature. The reaction mixture is added to 50 ml water and extracted 3 times with ethyl acetate. After drying and concentration, a deep red amorphous crystal powder was left (HPLC clean).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08247424B2
Source datasetuspto-grants-2012_08
ORD IDord-93e3b1d57b9442bfa4db85bd7a5ab4d4
Source noteuspto-grants-2012_08