Preparation of N-Acylated Phosphonopeptides with Free Phosphonic Group

References

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• Satisfactory microanalyses were obtained: P ± 0.10, Si ± 0.29
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• Satisfactory microanlyses were obtained: C ± 0.48, H ± 0.30, N ± 0.38, P ± 0.29. Compounds 3bc, e, f are the mixtures of two diastereomers
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• N-Deprotection of 3b affords the mixture of two diastereomeric phosphonopetides, which are distinctly distinguishable in NMR-31P-{1H} spectrum (Δ δP 0.12 ppm)
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