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Table 1 1H (400 MHz) and 13C (100 MHz) NMR data of bruceine D in CD3OD

From: Antidiabetic effects of Brucea javanica seeds in type 2 diabetic rats

Position

Bruceine D

Bruceine E

δH

δC

δH

δC

1

4.26 (1H, s)

81.6

3.54 (1H, d 7.3)

81.4

2

-

198.5

4.01 (1H, dd 1.3, 7.3)

72.8

3

6.05 (1H, s)

123.8

5.41 (1H, d 1.3)

123.8

4

-

164.3

-

135.3

5

2.96 (1H, d)

43.0

2.42 (1H, d 12.8)

42.4

6

2.38 (1H, dt), 1.85 (1H, td)

27.3

2.17 (1H, dt 2.8,), 1.70 (1H, td)

27.2

7

5.12 (1H, t)

79.8

5.08 (1H, t 2.7)

80.6

8

-

49.3

-

49.6

9

2.42 (1H, d)

44.8

2.08 (1H, d 4.2)

45.9

10

-

44.8

-

44.0

11

4.60 (1H, d)

74.1

4.60 (1H, d 4.4)

74.4

12

3.78 (1H, brs)

80.0

3.76 (1H, brs)

79.8

13

-

83.6

-

83.4

14

-

81.0

-

81.0

15

5.24 (1H, s)

69.3

5.15 (1H, s)

69.2

16

-

174.9

-

175.0

18

1.99 (3H, s)

21.2

1.67 (3H, s)

19.7

19

1.19 (3H, s)

10.1

1.24 3H, s)

10.8

20

4.54 (1H, d), 3.84 (1H, d)

69.0

4.63 (1H, d 7.3), 3.83 (1H, d 7.3)

69.4

21

1.44 (3H, s)

17.1

1.43 (3H, s)

17.0

  1. Chemical shifts are in ppm. Coupling constants in the parentheses are in Hz