Appendix 1—table 7. NMR spectroscopic data for iglu#9 (SI-4).

¹H (600 MHz), HSQC, and HMBC NMR spectroscopic data were acquired in methanol-d₄. Chemical shifts were referenced to δ(CHD₂OD)=3.31 ppm and δ(¹³CHD₂OD)=49.00 ppm.

Position	δ 13C [ppm]	δ 1H ([ppm] JHH[Hz])	HMBC
1	86.9	5.47 (J1,2 = 9.1)	C-2, C-3, C-5, C-2’, C-9’
2	73.2	3.96 (J2,3 = 9.0)	C-1, C-3
3	78.7	3.62 (J3,4 = 9.8)	C-4
4	71.3	3.61 (J4,5 = 9.7)	C-3
5	77.9	3.86 (J5,6a = 5.7)
6a	63.9	4.38 (J6a,6b = 11.9)	C-5, C-1′′
6b		4.68 (J5,6b = 2.1)	C-4, C-1′′
2′	126.6	7.36 (J2’,3’=3.4)	C-3', C-4’, C-9’
3′	103.1	6.47	C-2', C-4’, C-9’
4′	130.6
5′	121.4	7.52 (J5’,6’=7.8)	C-7’, C-9’
6′	120.8	7.02 (J6’,7’=7.3, J3’,6’=1.2)	C-4’, C-8’
7′	122.4	7.05	C-5’, C-9’
8′	111.6	7.50	C-4’, C-6’
9′	137.4
1′′	162.4
2′′	123.0
4′′	124.7	6.96 (J4’’,5’’=2.5, J4’’,6’’=1.4)	C-2’’, C-5’’, C-6’’
5′′	110.6	6.20 (J5’’,6’’=3.8)	C-2’’(weak), C-4’’(weak)
6′′	116.8	6.90	C-2’’, C-4’’, C-5’’