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- W1937388909 abstract "In the synthesis of dipeptides (Boc-AA(1)-AA(2)-OPac: AA(1) and AA(2) represent amino acids) protected by phenacyl (Pac) ester, amines and solid bases as the base for the conversion of the trifluoroacetic acid (TFA) salt of the amino component (TFA·H-AA(2)-OPac) into the corresponding free amino component (H-AA(2)-OPac) were examined. The synthesis of a dipeptide (Boc-Ala-Gly-OPac) using amines for the conversion afforded an unsatisfactory yield with by-products. On the other hand, the use of neutral alumina-supported Na(2) CO(3) (Na(2)CO(3) /n-Al(2)O(3)) as a solid base for the conversion provided the dipeptide in a quantitative yield without by-products. The application of Na(2)CO(3) /n-Al2 O3 to the synthesis of some dipeptides protected by Pac ester gave the desired peptides in excellent yields." @default.
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- W1937388909 date "2013-08-28" @default.
- W1937388909 modified "2023-10-16" @default.
- W1937388909 title "An efficient method for the synthesis of phenacyl ester-protected dipeptides using neutral alumina-supported sodium carbonate ‘Na2CO3/n-Al2O3’" @default.
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- W1937388909 doi "https://doi.org/10.1002/psc.2544" @default.
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