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. 2022 Aug 3;13(33):9685–9692. doi: 10.1039/d2sc02648a

Screen of protecting groups.

graphic file with name d2sc02648a-u2.jpg
Entry PGb Yielda (%) d.r.a
1 Ac 84 7 : 1
2 Piv 86 11 : 1
3 TBDPS 83 11 : 1
4 Bn 64 15 : 1
a

Yields and diastereomeric ratio (d.r.) determined by 1H NMR spectroscopy using 1,3-dinitrobenzene as internal standard.

b

PG = protecting group.