Bulletin of the Chemical Society of Japan p. 3573 - 3579 (1986)
Update date:2022-08-05
Topics:
Shin, Chuung-gi
Yonezawa, Yasuchika
Ikeda, Masahiro
The one-pot syntheses of N-protected Δ1- and Δ2-dehydrodipeptide esters by the coupling of N-carboxy α-dehydroamino acid anhydride (ΔNCA) with several kinds of C- or N-protected L-α-amino acids are described.In addition, it was found that a similar coupling of ΔNCA with both C- and N-protected α-amino acids also took place to give Δ2-dehydrotripeptide derivatives, involving eight kinds of important C-terminal segments of antrimycins and cirratiomycins.The configurational confirmation of the α-dehydroisoleucine residue of the antibiotics is also discussed.
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