Benzaldehyde → HCID 53825859, compound

Participants

Reaction Steps

(3-Aminobenzyl){2-[2-(4-methoxyphenyl)-1-methylcarbamoyl ethylcarbamoyl]-4-methylpentyl}phosphinic acid methyl ester (prepared as described in Example 4/Step A) (150 mg, 0.30 mmole), benzaldehyde (38 mg, 0.36 mmole), sodium cyanoborohydride (23 mg, 0.357 mmole) and acetic acid (1 drop) in methanol were stirred at room temperature for 3 hours. The reaction was quenched with 1N hydrochloric acid (few ml's) and the reaction mixture concentrated. The residue was dissolved in ethyl acetate (20 ml) and washed with 1N hydrochloric acid (20 ml), saturated sodium bicarbonate solution (20 ml) and dried with magnesium sulfate. Filtration and concentration gave the crude product which was purified by chromatography (3:97--methanol:methylene chloride) yielding 133 mg (75%) of (3-Benzylamino benzyl)-{2-[2-(4-methoxyphenyl)-1-methylcarbamoylethylcarbamoyl]-4-methylpentyl}phosphinic acid methyl ester as an oil.

Provenance & Evidence