Hydrochloric Acid → HCID 18398859, compound

Participants

Reaction Conditions

Reaction Steps

A solution of the compound obtained in Example 335 (53 mg) in chloroform (4 ml) is cooled to 0° C., and thereto is added a 4M solution of hydrogen chloride in ethyl acetate (2 ml). The mixture is stirred at 0° C. for two hours, and thereto is added a saturated aqueous sodium hydrogen carbonate solution, and the mixture is extracted with ethyl acetate. The extract is washed, dried, and concentrated under reduced pressure. The residue is purified by silica gel column chromatography (solvent; hexane:ethyl acetate=1:2) to give 2-(4-aminophenyl)-8-benzyloxy-3-methoxycarbonyl-4-(3,4,5-trimethoxyphenyl)-1(2H)-isoquinolinone (20 mg) as listed in Table 30.

Provenance & Evidence