Caffeic Acid → n-(n'-Caffeoyl-l-aspartyl)dopamine

Participants

Reaction Steps

N-(N′-benzyloxycarbonyl-Oγ-tert-butyl-L-aspartyl)dopamine (1.0 g, 2.3 mmol) was deprotected by hydrogenolysis as described in example 5. The product thus obtained was then coupled with caffeic acid (621 mg, 3.5 mmol) according to the indications of example 4. Purification by flash chromatography using 30-50% AcOEt/CH2Cl2 containing 1% AcOH yielded 519 mg (47%) of the title compound as yellow crystals.

Provenance & Evidence