反应详情

To a mixture of Z--(L)--mesoDAP (2) (1.50 g) and triethylamine (1.0 g) in aqueous dioxane (dioxane 30 ml and water 20 ml) was added Boc--D--Ala--OSu (3) (1.32 g) and the mixture was allowed to stand overnight at room temperature. Dioxane was evaporated, and the resulting aqueous solution was acidified with diluted hydrochloric acid and extracted with ethyl acetate. The extract was washed with water, dried over magnesium sulfate and evaporated to give Boc--D--Ala--(D)--Z--(L)--mesoDAP (4) (1.90 g) as a white foam.

1. additionTo a mixture of Z
2. customDioxane was evaporated
3. extractionextracted with ethyl acetate
4. washThe extract was washed with water
5. dry with materialdried over magnesium sulfate
6. customevaporated