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. 2015 Oct 26;10(10):e0139347. doi: 10.1371/journal.pone.0139347

Table 3. Coupling of N-phthaloyl-L-amino acids with 5f afforded C2-symmetric molecules (6r-6u).

Entry R Yield (%)
6r CH2CH(CH3)2 63
6s CH2C6H5 51
6t CH(CH3)2 44
6u CH(CH3)CH2CH3 41