Applied Biological Chemistry

Table 1 NMR data for butyroscavin (1)

From: Butenolide derivatives from the fungus Aspergillus terreus and their radical scavenging activity and protective activity against glutamate-induced excitotoxicity

Position	Butyroscavin (1)
Position	¹³C^a	¹H (mult.)^a	HMBC
1	169.6
2	138.6
3	128.0
4	85.7
5	38.3	3.42 (2H, s)	C-4, C-1″, C-2″
6	169.8
7	62.5	4.25 (2H, q, J = 7.2 Hz)	C-8, C-6
8	13.0	1.21 (3H, t, J = 7.2 Hz)	C-7
1′	121.9
2′	129.2	7.60 (2H, d, J = 8.8 Hz)	C-3, C-2′, C-4′
3′	115.4	6.87 (2H, d, J = 8.8 Hz)	C-1′, C-3′, C-4′
4′	158.2
1″	124.1
2″	131.3	6.64 (2H, d, J = 8.8 Hz)	C-5, C-2″, C-4″
3″	114.4	6.51 (2H, d, J = 8.8 Hz)	C-1″, C-3″, c C-4″
4″	156.3

^a ¹H and ¹³C NMR were measured at 400 MHz and 100 MHz, respectively, in CD₃OD and solvent signals were used as reference

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