Table 1.

¹H- (600 MHz) and ¹³C-NMR (150 MHz) Data of 1 and 2 in Acetone-d₆ (δ in ppm, J in Hz).

1			2
Position	δH	δC, mult.	Position	δH	δC, mult.	Position	δH	δC, mult.
1 and 1′	―	110.4, C	1	―	110.4, C	1′	―	110.4, C
2 and 2′	―	160.1, C	2	―	160.0, C	2′	―	160.0, C
3 and 3′	6.97 (d; 7.8)	116.5, CH	3	6.96 (d; 7.8)	116.5, CH	3′	6.96 (d; 7.8)	116.6, CH
4 and 4′	7.44 (dd; 7.8, 7.8)	133.6, CH	4	7.42 (dd; 7.8, 7.8)	133.7, CH	4′	7.42 (dd; 7.8, 7.8)	133.7, CH
5 and 5′	6.92 (dd; 7.8, 7.8)	118.6, CH	5	6.91 (dd; 7.8, 7.8)	118.6, CH	5′	6.91 (dd; 7.8, 7.8)	118.7, CH
6 and 6′	7.67 (d; 7.8)	128, CH	6	7.65 (d; 7.8)	128.0, CH	6′	7.63 (d; 7.8)	128.0, CH
7 and 7′	―	166.2, C=N	7	―	166.2, C=N	7′	―	166.2, C=N
8 and 8′-a	4.47 (m)	69.8, CH2	8-a	4.46 (m)	69.9, CH2	8′-a	4.29 (m)	69.3, CH2
8 and 8′-b	4.62 (m)		8-b	4.62 (m)		8′-b	4.53 (dd; 8.4, 9.6)
9 and 9′	4.62 (m)	71.4, CH	9	4.61 (m)	71.2, CH	9′	4.77 (m)	67.9, CH
10 and 10′	4.24 (d; 6.0)	78.5, CH	10	4.22 (d; 6.6)	78.6, CH	10′	4.62 (m)	77.1, CH
11 and 11′-a	2.90 (dd; 6.6, 11.4)	34.2, CH2	11-a	2.90 (m)	34.2, CH2	11′-a	2.77 (m)	32.6, CH2
11 and 11′-b	3.15 (dd; 6.6, 11.4)		11-b	3.18 (m)		11′-b	3.00 (m)
12 and 12′	3.49 (m)	70.4, CH	12	3.49 (m)	70.3, CH	12′	3.84 (m)	67.0, CH
13 and 13′-a	2.92 (dd; 7.2, 13.8)	47.4, CH2	13-a	2.90 (m)	47.5, CH2	13′-a	3.13 (m)	42.6, CH2
13 and 13′-b	4.05 (dd; 6.6, 13.8)		13-b	4.03 (m)		13′-b	4.05 (m)
14 and 14′	―	168.8, C=O	14	―	168.9, C=O	14′	―	169.3, C=O
15 and 15′	3.65 (d; 3.6)	45.4, CH2	15	3.64 (m)	45.4, CH2	15′	3.62 (m)	45.6, CH2
16 and 16′	4.75 (t; 3.8)	60.1, CH	16	4.78 (m)	60.2, CH	16′	4.75 (m)	59.4, CH
17 and 17′	2.52 (s)	44.2, CH3	17	2.54 (s)	44.4, CH3	17′	2.45 (s)	36.2, CH3