Table 3.

¹H and ¹³C NMR (CDCl₃, 500.13 MHz and 125.8 MHz) and HMBC assignment for pyripyropene S (6).

Position	δC, Type	δH, (J in Hz)	COSY	HMBC
1	73.2, CH	4.79, dd (11.7, 4.6)	H-2
2	23.2, CH2	1.99, m	H-1
		1.76, m
3	35.5, CH2	2.09, m	H-2
4	38.8, C	-
5	144.5, C	-
6	83.9, C	-
7	77.7, CH	5.23, dd (11.9, 5.4)	H-8	C-6
8	24.3, CH2	1.82, ddd (12.8, 5.1, 1.4)	H-7, H-9
		1.61, m
9	41.1, CH	1.73, brd (12.5)	H-8
10	40.6, C	-
11	64.7, CH2	3.75, d (11.9)		C-1, 9, CO (OAc-11)
		3.79, d (11.9)
12	24.2, CH3	1.26, s		C-3, 4, 9
13	111.2, CH	6.36, s		C-4, 6, 4′
14	21.3, CH3	1.59,s		C-5, 6, 7
15	13.3, CH3	0.88, s		C-1, 10, 11
2′	161.3, C	-
3′	101.1, C	-
4′	161.2, C	-
5′	98.6, CH	6.54, s		C-2′, 3′, 6′, 3″
6′	157.2, C	-
2″	146.6, CH	9.02, brs	H-4″	C-3″, 4″, 6″
3″	127.4, C	-
4″	133.1, CH	8.14, dt (7.8, 1.4, 1.4)	H-2″, 5″	C-6′, 2″, 6″
5″	123.8, CH	7.42, dd (8.0, 4.9)	H-4″, 6″	C-3″, 6″
6″	151.2, CH	8.68, brd (4.0)	H-5″	C-5″
OAc-1	170.4, CO	-
	21.2, CH3	2.05, s		CO (OAc-1)
OAc-7	169.8, CO	-
	21.2, CH3	2.17, s		CO (OAc-7)
OAc-11	171.0, CO	-
	20.8, CH3	2.10, s		CO (OAc-11)