Chemical shifts values (δ) of H1–3 protons in the presence and absence of DTX.

	H1	H1/DTX	Δδ	H2	H2/DTX	Δδ	H3	H3/DTX	Δδ
	δ	δ		δ	δ		δ	δ
H-1	4.93	4.90	−0.03	4.94	4.91	−0.03	4.99	4.94	−0.05
H-2	3.53	3.52	−0.01	3.52	3.50	−0.02	3.56	3.53	−0.03
H-3	3.86	3.81	−0.05	3.84	3.80	−0.04	3.86	3.81	−0.05
H-4	3.45	3.44	−0.01	3.43	3.42	−0.01	3.50	3.46	−0.04
H-5	3.82	3.78	−0.04	3.82	3.79	−0.03	3.84	3.78	−0.06
H-6	3.73	3.70	−0.03	3.71	3.69	−0.02	3.75	3.72	−0.03