Skip to main content
. 2024 Apr 13;10(8):e29518. doi: 10.1016/j.heliyon.2024.e29518

Table 2.

Chemical shifts (δ) of 1H/13C NMR of compounds isolated from V. amygdalina.

Luteolin-7--o-glucuronide
Vernoamyoside D
Vernotolaside
C/H
Atom
13C (ppm) 1H (ppm) C/H
Atom
13C (ppm) 1H (ppm) C/H
Atom
13C (ppm) 1H (ppm)
2 171.1 ___ 1 35.2 1.2(d) 1 102.31 3.40
3 104.0 6.4(s) 2 28.3 2.4(d) 2 63.31 1.07
4 172.9 ___ 3 72.4 3.5(s) 3 82.08 ____
5 160.2 8.1(s) 4 34.5 5.3(s) 4 97.16 ____
6 99.5 6.2 (brs) 5 38.6 1.6(s) 5 60.66 2.42
7 170.2 ___ 6 29.7 3.4(d) 6 70.65 3.70
8 90.3 6.2 (brs) 7 57.3 7.3(s) 7 56.70 ___
9 152.4 ___ 8 60.4 __ 8 75.60 0.97
10 99.6 ___ 9 80.3 __ 9 56.70 0.85
1 120.2 ___ 10 62.4 __ 10 78.42 3.68
2 110.3 7.3(S) 11 40.3 3.4 sugar
3 145.6 8.2 (brs) 12 36.2 5.5(d) 1′ 48.13 3.40
4 150.0 7.4 (brs) 13 39.1 1.9(d) 2′ 38.40 3.20
5 115.9 6.8(s) 14 38.3 2.1(m) 3′ 40.31 3.37
6 119.2 7.4(s) 15 56.2 2.5 4′ 36.76 3.10
Sugar 16 56.3 1.9 5′ 39.50 3.38
1″ 99.0 5.2(s) 17 44.2 1.4 6′ 44.26 3.56
2″ 70.0 5.1(s) 18 56.8 2.2 _ ___ ___
3″ 72.0 5.3(s) 19 70.4 0.8(s) _ ___ ___
4″ 65.0 5.2(s) 20 76.4 0.6(s) _ ___ ___
5″ 63.0 5.2(s) 21 60.4 ___ _ ___ ___
6″ nil ___ 22 38.2 ___ _ ___ ___
23 45.1 7.4 (brs) _ _ ___ ___
_ _ ___ 24 50.4 5.2(m) _ ___ ___
_ _ ___ 25 70.3 2.1(m) _ ___ ___
_ _ ___ 26 40.4 0.8(d) _ ___ ___
_ _ ___ 27 38.3 0.9(d) _ ___ ___
_ _ ___ 28 29.4 ___ _ ___ ___
_ _ ___ 29 44.0 2.0(s) _ ___ ___
_ _ ___ Sugar
_ _ ___ 1′ 74.5 4.1(d) _ ___ ___
_ _ ___ 2′ 79.0 2.8 _ ___ ___
_ _ ___ 3′ 72.0 3.1 _ ___ ___
_ _ ___ 4′ 77.3 3.0 _ ___ ___
_ _ ___ 5′ 64.1 3.2 _ ___ ___
_ _ ___ 6′ 58.3 3.4 _ ___ ___