HCID 90092689, compound → HCID 90092685, compound

Participants

Reaction Steps

Using the procedure described in example 1, step 5, 4-(8-chloro-5-methyl-3,4-dihydro-2H-1-benzopyran-6-yl)-1-methyl-3-(thiophen-2-yl)-1H-pyrazole-5-carbaldehyde (35a) (180 mg, 0.48 mmol) is converted, after purification by preparative TLC (dichloromethane/ethyl acetate 70/30) into 2-[4-(8-chloro-5-methyl-3,4-dihydro-2H-1-benzopyran-6-yl)-1-methyl-3-(thiophen-2-yl)-1H-pyrazol-5-yl]-2-hydroxyacetate (35b) (69 mg, 0.16 mmol, 33%).

Provenance & Evidence