Chemical and Pharmaceutical Bulletin p. 223 - 225 (1993)
Update date:2022-08-03
Topics:
Okuyama
Kamachi
Oki
The sterically hindered alanine-amide bond of pradimicin A (PRM A, 1) was successfully cleaved via less hindered amide (11) by treatment with NOBF4 in eight steps to afford practical yield of 4'-N-Cbz-pradimic acid (13), which is a useful intermediate for the synthesis of alanine-exchanged derivatives.
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