Table 2.

¹H- and ¹³C-NMR, COSY and HMBC spectral data of compound (MYA-3) (CDCl₃).

Position	H	C	COSY	HMBC (H with C)
1	-	172.1	-	-
2	2.42, 2.32 m	39.3(CH2)	3.86	172.1, 69.9, 35.1
3	3.86, m	69.9(CH)	2.32, 2.42	43, 172.1
4	1.67, m	35.1(CH)	3.86, 1.25, 0.84	69.9, 39.3, 27.2
5	0.92, 1.25	43.1(CH2)	1.67, 1.57	18.23, 47.8, 69.9
6	1.57	27.2(CH)	1.10, 0.97, 1.25	26.3, 35.1
7	0.97, 1.10	47.8	1.62, 1.57	37.5, 43.1
8	1.62	26.3(CH)	0.85, 1.03, 1.1	65.3, 27.2
9	1.03, 0.76	37.5(CH2)	1.85, 1.62	14.9, 73.2, 26.3
10	1.85	65.3(CH)	4.1, 1.03	118.1, 26.3
11	4.10, d, J = 9.6	73.2(CH)	1.85	116.1, 37.47, 143.9, 14.9
12	-	118.1	-	-
13	6.80, d, J = 10.8	143.9(CH)	6.40	118.1, 138.5, 73.2,126.9
14	6.40, m	126.9(CH)	6.20, 6.80	116.1, 35.9, 143.9
15	6.20, m	138.5(CH)	6.40, 2.56	143.9, 35.9, 76.6
16	2.56, 2.59, m	35.9(CH2)	5.0, 6.20	126.9, 138.5, 76.5, 45.9
17	5.0, m	76.5 (CH)	2.56, 2.59, 2.70	172.1,138.5, 29.6,35.9
18	2.70, t	45.9 (CH)	1.30, 1.97, 2.51	176.1, 76.5, 47.8, 29.6
19	1.97, 1.30m	29.6(CH2)	2.70, 5.0, 2.51	76.5, 47.8, 31.1, 25.2
20	1.83, 1.79	25.2 (CH2)	1.30, 2.03, 1.90	45.9, 47.8
21	2.03, 1.90 m	31.1(CH2)	1.83, 1.79, 2.51	176.1, 45.9, 47.8
22	2.51, m	47.8(CH)	1.90, 2.03, 2.70	176.1, 76.5, 45.9, 29.6, 31.1
CH3 at C4	0.84, d, J = 6	17.0	-	35.1, 43.1, 69.9
CH3 at C6	0.80, d, J = 6	18.2	-	27.2, 47.8, 43.1
CH3 at C8	0.85, d, J = 6	20.2	-	26.3, 37.5, 47.8
CH3 at C10	1.04, d, J = 6	14.9	-	65.3, 73.2
CN	-	116.1	-	-
COOH	-	176.1	-	-