. Author manuscript; available in PMC: 2009 Mar 1.

Published in final edited form as: Bioorg Med Chem. 2007 Nov 19;16(5):2676–2686. doi: 10.1016/j.bmc.2007.11.039

Table 3.

Percentages of C_3′-endo (N) versus C_2′-endo (S) conformers and equilibrium constants (N/S) for pseudouridine and uridine derivatives at 25 °C

Compound	% C₃′-endo (N)	% C₂′-endo (S)	K_eq (N/S)
Ψ^a	48	52	0.9
m¹Ψ	46	54	0.9
m¹acp³Ψ^a	48	52	0.9
m¹hb³Ψ	52	48	1.1
Ψm	43	57	0.8
U^b	53	47	1.1
acp³U^a	60	40	1.5
acb³U	55	45	1.2
hb³U	58	42	1.4
cp³U	58	42	1.4

^a)