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Table 5 The dependence of 31P NMR chemical shifts differences (Δδ) on the pD values, recorded in the presence of α-cyclodextrin (100 mM) for racemic mixture of compound 1 and 2 (10 mM)

From: Phosphonates enantiomers receiving with fungal enzymatic systems

pD

2.5

4.8

7.5

10.3

11.0

12.0

Compound 1

0.04

0.01

0.00

0.00

0.18

0.24

pD

2.4

4.0

7.1

10.0

11.0

12.0

Compound 2

0.11

0.00

0.01

0.07

0.11

0.09