piperine_300-500.pdf
- 1. 7.6 7.4 7.2 7.0 6.8 6.6 6.4 6.2 PPM
300 MHz
500 MHz
14
N
16
5
4
O
1
O
3
2
13
6
O
15
12
11
10
9
7
8
17
21
20
18
19 H
13a
H
12a
H
11a
H
10a
12
6
9 10
11 13
8
CHCl3
piperine
Clauss(cgf) 070107
15mg in 100% CDCl3
- 3. piperine
Clauss(cgf) 070107
15mg in 100% CDCl3
1H spectrum at 500 MHz
8 7 6 5 4 3 2 1 0 PPM
7.487.467.447.427.407.38 PPM
7.00 6.95 6.90 6.85 6.80 6.75 PPM
6.480
6.470
6.460
6.450
6.440PPM
3.80
3.75
3.70
3.65
3.60
3.55
3.50PPM
1.85 1.80 1.75 1.70 1.65 1.60 1.55 PPM
60Hz/cm
all expansions
20Hz/cm unless
otherwise noted
14
N
16
5
4
O
1
O
3
2
13
6
O
15
12
11
10
9
7
8
17
21
20
18
19 H
13a
H
12a
H
11a
H
10a
12
6
9
10
11
13
8
-OH
18 +
20
17 +
21 19
2
- 5. piperine
Clauss(cgf) 070107
15mg in 100% CDCl3
1H gcosy expansion
at 500 MHz
14
N
16
5
4
O
1
O
3
2
13
6
O
15
12
11
10
9
7
8
17
21
20
18
19 H
13a
H
12a
H
11a
H
10a
F2 (ppm)
6.6
6.8
7.0
7.2
7.4
F1
(ppm)
6.6
6.8
7.0
7.2
7.4
- 9. piperine
Clauss(cgf) 070107
15mg in 100% CDCl3
expansion of 1H
gHMBCAD (n-bond
1H-13C correlation)
at 500 MHz
1-bond artifacts
(doublets in the F2
dimension split by
J ~160Hz) have
been colored yellow.
CH
F2 (ppm)
6.0
6.2
6.4
6.6
6.8
7.0
7.2
7.4 F2 (ppm)
6.0
6.2
6.4
6.6
6.8
7.0
7.2
7.4
F1
(ppm)
110
120
130
140
150
160
F1
(ppm)
110
120
130
140
150
160
C14
C10
C8
C7
12
6
9
10
11 13
8
2
C4,C5
C11
C13
C12
C9
C6
14
N
16
5
4
O
1
O
3
2
13
6
O
15
12
11
10
9
7
8
17
21
20
18
19 H
13a
H
12a
H
11a
H
10a