Proton number

Chemical Shift (ppm)

Multiplicity

Coupling constant

Integration

H4

8.03

Doublet

³J = 8.9 Hz

1.11

H5

7.67

Doublet of doublet

³J = 8.9 Hz; ⁴J = 2.2 Hz

1.15

H7

7.58

Doublet

⁴J = 2.2 Hz

0.82

H8

3.1

Doublet of doublet

²J = 14.1 Hz; ³J = 8.35 Hz

1.20

H8’

3.35

Doublet of doublet

²J = 14.1 Hz; ³J = 4.05 Hz

1.22

H9

4.4

Doublet of doublet

³J = 4.05 Hz; ³J = 8.35 Hz

1.00

H12

4.1

Doublet of doublet

³J = 3.5 Hz; ³J = 5.2 Hz

1.14

H13

3.7

Doublet of doublet

²J = 12 Hz; ³J = 3.70 Hz

2.57

H13’

3.7

Doublet of doublet

²J = 12 Hz; ³J = 5.1 Hz