Table 1.

¹H and ¹³C NMR data (δ in ppm and J in Hz) of compounds 1–3

No.	1		2		3
	δCa	δHb, mult (J)	δCa	δHb, mult (J)	δCc	δHd, mult (J)
2	131.8,CH	7.40, d (2.2)	130.9,CH	7.36, d (2.2)	131.6,CH	7.61, d (2.2)
3	123.9,C		123.5,C		124.3,C
4	126.7,C		123.1,C		127.0,C
5	122.4,CH	6.72, d (2.2)	123.7,CH	6.70, d (2.2)	122.4,CH	6.77, d (2.2)
6	58.5,CH2	4.56, s	68.6,CH2	4.54, d (0.8)	58.5,CH2	4.59, d (0.8)
6-OMe			58.2,CH3	3.34, s
7	197.4,C		196.4,C		197.5,C
8	26.9,CH3	2.32, s	27.3,CH3	2.29, s	27.0,CH3	2.40, s
1'	139.5,C		139.5,C		49.9,CH2	3.99, t (7.0)
2'	129.9,CH	7.13, d (7.8)	129.9,CH	7.12, d (7.8)	27.4,CH2	2.08, m
3'	129.6,CH	7.24–7.28, m	129.6,CH	7.23–7.27, m	31.4,CH2	2.32, t (7.3)
4'	127.7,CH	7.18–7.22, m	127.7,CH	7.18–7.22, m	174.8,C
5'	129.6,CH	7.24–7.28, m	129.6,CH	7.23–7.27, m	52.2,CH3	3.65, s
6'	129.9,CH	7.13, d (7.8)	129.9,CH	7.12, d (7.8)
7'	38.6,CH2	3.06, t (7.1)	38.7,CH2	3.06, t (7.1)
8'	52.5,CH2	4.16, t (7.1)	52.5,CH2	4.16, t (7.1)

^aRecorded at 150 MHz, Recorded in Methanol-d₄

^bRecorded at 600 MHz, Recorded in Methanol-d₄

^cRecorded at 126 MHz, Recorded in Methanol-d₄

^dRecorded at 500 MHz, Recorded in Methanol-d₄