Table 3. Change in Chemical Shifts (ppm) of Different Protons of Dyphylline and β-CD When Complexed with Each Other at 298.15 K.

	ppm (D2O)
H protons	δdyphylline	δβ-CD	δcomplex	Δδ (difference) (ppm)
Ha	3.207		3.248	0.041
Hb	3.398		3.504	0.106
Hc	3.543		3.603	0.060
Hd	3.962		3.967	0.007
He	4.403		4.439	0.036
He′	4.134		4.170	0.036
Hf	7.865		7.870	0.005
H-1		4.945	4.965	0.020
H-2		3.523	3.549	0.026
H-3		3.842	3.860	0.018
H-4		3.460	3.451	0.009
H-5		3.740	3.749	0.009
H-6		3.754	3.773	0.019