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. Author manuscript; available in PMC: 2009 Jan 22.

Published in final edited form as: Coord Chem Rev. 2008 Apr;252(8-9):886–902. doi: 10.1016/j.ccr.2007.07.026

Table 1.

Sodium ion transport rates determined by ²³Na NMR^a

No.	Compound	Rate^b
	Gramicidin D	100
1	C₁₂<N18N>C₁₂<N18N>C₁₂<N18N>C₁₂	28
2	C₁₂<N18N>C₁₂<N15N>C₁₂<N18N>C₁₂	25
3	C₁₂<N18N>C₁₂(OCH₂CH₂)₃OC₁₂<N18N>C₁₂	14
4	PhCH2<N18N>C₁₂<N18N>C₁₂<N18N>CH₂Ph	39
5	H<N18N>C₁₂<N18N>C₁₂<N18N>H	28
6	<18N>C₁₂<N18N>C₁₂<N18>	<2
7	C₁₂[<N18N>(OCH₂CH₂)₃O]₂<N18N>C₁₂	3
8	C₁₂<N18N>C₁₂	<2
9	PhCH₂<N18N>CH₂Ph	<2
10	C₁₂<N18N>C₁₂<N18N>C₁₂	<2

^a

Data obtained at 25 °C by using egg lecithin vesicles.

^b

Transport rate observed in each experiment arbitrarily set to 100 and all other values are normalized to it.