反应详情

1-[N-[3-(Benzoylamino)-7-[[(phenylmethoxy)carbonyl]amino]-2-oxoheptyl]-N-[(phenylmethoxy)carbonyl]-L-alanyl]-L-proline, phenylmethyl ester (1.3 g., 1.6 mmole) is dissolved in ethanol (75 ml.) and aqueous hydrochloric acid (1N, 5 ml.). Palladium on carbon catalyst (10%, 450 mg.) is added and the mixture is hydrogenated at atmospheric pressure overnight. The catalyst is filtered off and the solution is evaporated in vacuo. The residue is dissolved in water and lyophilized. The lyophilate is triturated with ether to give 0.6 g. of 1-[N-[7-amino-3-(benzoylamino)-2-oxoheptyl]-L-alanyl]-L-proline, hydrochloride; m.p. 80°-155°; [α]D22 =-50° (c=1.1, methanol). Rf 0.09 (silica gel, n-butanol/acetic acid/water, 4:1:1).

1. customis hydrogenated at atmospheric pressure overnight
2. filtrationThe catalyst is filtered off
3. customthe solution is evaporated in vacuo
4. dissolutionThe residue is dissolved in water
5. customThe lyophilate is triturated with ether
6. customto give 0.6 g