Semi-synthetic study of some curcumin derivatives to improve water solubility for pharmaceutical applications - 2

LIST OF SYMBOLS AND ABBREVIATIONS



STT

Symbol

Notes

1.

13 C-NMR

Carbon-13 Nuclear Magnetic Resonance spectroscopy

2.

1 H-NMR

Proton nuclear magnetic resonance spectroscopy ( 1 H-Nuclear Magnetic Resonance spectroscopy)

3.

Ac

Acetyl (CH 3 CO-)

4.

AR

Analytical reagent

5.

BDMC

Bisdemethoxycurcumin (curcumin III)

6.

COSY

Correlation spectroscopy

7.

CTCT

Structural formula

8.

CTPT

Molecular formula

9.

DCC

N , N Ɵ-Dicyclohexylcarbodiimide

10.

DCM

Dichloromethane

11.

DCU

N , N -Dicyclohexylurea

12.

dd

Solution

13.

DDMC

Di- O -Demethylcurcumin

14.

DEPT

DEPT spectrum (distortionless enhancement by polarization transfer)

15.

DMAP

4-Dimethylaminopyridine

16.

DMC

Demethoxycurcumin (curcumin II)

17.

DMEM

DulbeccoƟs Modified EagleƟs Medium

18.

DMF

Dimethylformamide

19.

DMSO

Dimethyl sulfoxide

20.

DPPH

1,1-Diphenyl-2-picrylhydrazyl

21.

unit

Carbon unit

22.

EPP

Ethyl phenylpropiolate

23.

eq

Equivalent

24.

Et

Ethyl (C 2 H 5 -)

25.

FBS

Fetal bovine serum

26.

H %

Reaction efficiency (%)

27.

Hela

Human cervix carcinoma cell lines

28.

HEPES

4-(2-hydroxyethyl)-1-piperazinethansulfonic acid

29.

HepG2

Human hepatocellular carcinoma cell lines

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Semi-synthetic study of some curcumin derivatives to improve water solubility for pharmaceutical applications - 2


30.

HIV

Human immunodeficiency virus

31.

HL-60

Human leukemia cell lines

32.

HPLC

High-performance liquid chromatography

33.

HMBC

Heteronuclear multiple bond correlation

34.

HSQC

Heteronuclear single quantum coherence

35.

IC 50

Inhibition concentration at 50% of the test object (Inhibition concentration at 50%)

36.

IPA

Isopropanol

37.

IR

Infrared spectroscopy


38.


IUPAC

Chemical Nomenclature according to the International Union of Pure and Applied Chemistry (International Union of Pure and Applied Chemistry Nomenclature)

39.

K562

Human acute leukemia cell line

myelogenous leukemia cell lines)

40.

KL

Mass

41.

LD 100

Lowest dose that kills 100% of experimental animals

42.

LD 50

Lethal dose for 50% of experimental animals

43.

L -NMMA

N G -methyl- L -arginine acetate

44.

logP

Oil-water distribution coefficient

45.

LPS

Lipopolysaccharide

46.

MCF7

Human breast carcinoma cell lines

47.

Me

Methyl (CH 3 -)

48.

MS

Mass spectrometry

49.

MTT

3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide

50.

OD

Optical density

51.

PEG

Polyethylene glycol


52.


PH1

Dimethyl 3,3-bis(( E )-3-(3-methoxy-4-(2-methoxy-2-oxoethoxy)phenyl)acryloyl)pentandioate

(4,4, O,O Ɵ-tetra(methoxycarbonyl-methyl)curcumin)


53.


PH2

Diethyl 3,3-bis(( E )-3-(4-(2-ethoxy-2-oxoethoxy)-3- methoxyphenyl)acryloyl)pentandioate

(4,4, O,O Ɵ-tetra(ethoxycarbonyl-methyl)curcumin)



54.


PH3

3,3-bis(( E )-3-(4-(carboxymethoxy)-3- methoxyphenyl)acryloyl)pentandioic acid

(4,4,O,OƟ-tetra(carboxymethyl)curcumin)


55.


PH4

Sodium 3,3-bis(( E )-3-(4-(carboxylatomethoxy)-3- methoxyphenyl)acryloyl)pentandioate

(Tetrasodium 4,4, O,O Ɵ-tetra(carboxylatomethyl)curcumin)


56.


PH5

Sodium 2,2'-((((1 E ,6 E )-3,5-dioxohepta-1,6-dien-1,7-diyl)bis(2-

methoxy-4,1-phenylene))bis(oxy))bis(ethane-1-sulfonate) (Disodium O,OƟ -bis(2-sulfonatoethyl)curcumin)


57.


PH6

(1 E ,6 E )-1-(4-hydroxy-3-methoxyphenyl)-7-(4-(2-

hydroxyethoxy)-3-methoxyphenyl)hepta-1,6-dien-3,5-dion (Mono- O -(2-hydroxyethyl)curcumin)


58.


PH7

(1 E ,6 E )-1,7-bis(4-(2-hydroxyethoxy)-3-methoxyphenyl)hepta- 1,6-dien-3,5-dion

(Di- O -(2-hydroxyethyl)curcumin)


59.


PH8

Acid 5-(2-(4-((1 E ,6 E )-7-(4-hydroxy-3-methoxyphenyl)-3,5- dioxohepta-1,6-dien-1-yl)-2-methoxyphenoxy)ethoxy)-5- oxopentanoic acid

(Mono- O -(2-(glutaryloxy)ethyl)curcumin)


60.


PH9

Acid 4-(2-(4-((1 E ,6 E )-7-(4-hydroxy-3-methoxyphenyl)-3,5- dioxohepta-1,6-dien-1-yl)-2-methoxyphenoxy)ethoxy)-4- oxobutanoic acid

(mono- O -(2-(succinyloxy)ethyl)curcumin)


61.


PH10

Sodium 4-(2-(4-((1 E ,6 E )-7-(4-hydroxy-3-methoxyphenyl)-3,5- dioxohepta-1,6-dien-1-yl)-2-methoxyphenoxy)ethoxy)-4- oxobutanoate

(Disodium salt mono- O -(2-(succinyloxy)ethyl)curcumin)


62.


PH11

2-(4-((1 E ,6 E )-7-(4-hydroxy-3-methoxyphenyl)-3,5-dioxohepta- 1,6-dien-1-yl)-2-methoxyphenoxy)ethyl dihydrophosphate

(2-(curcumin- O -yl)ethyl dihydrophosphate)


63.


PH12

Sodium 2-(4-((1 E ,6 E )-7-(4-hydroxy-3-methoxyphenyl)-3,5-

dioxohepta-1,6-dien-1-yl)-2-methoxyphenoxy)ethyl phosphate (Sodium salt of 2-(curcumin- O -yl)ethyl dihydrophosphate)


64.


PH13

Sodium salt 2-(4-((1 E ,6 E )-7-(4-(2-hydroxyethoxy)-3- methoxyphenyl)-3,5-dioxohepta-1,6-dien-1-yl)-2- methoxyphenoxy)ethyl sulfate

(Sodium 2-(O-(2-hydroxyethyl)-curcumin)ethyl sulfate)



65.


PH14

5,5'-((((((1 E ,6 E )-3,5-dioxohepta-1,6-dien-1,7-diyl)bis(2- methoxy-4,1-phenylene))bis(oxy))bis(ethan-2,1- diyl))bis(oxy))bis(5-oxopentanoic acid)

(Di- O -(2-(glutaryloxy)ethyl)curcumin)


66.


PH15

4,4'-((((((1 E ,6 E )-3,5-dioxohepta-1,6-dien-1,7-diyl)bis(2- methoxy-4,1-phenylene))bis(oxy))bis(ethan-2,1- diyl))bis(oxy))bis(4-oxobutanoic acid)

(Di- O -(2-(succinyloxy)ethyl)curcumin)


67.


PH16

((((1 E ,6 E )-3,5-dioxohepta-1,6-dien-1,7-diyl)bis(2-methoxy-4,1- phenylene))bis(oxy))bis(ethan-2,1-diyl)bis(2-amino-3- methylbutanoate)

(Di- O -(2-( ւ -valinoyloxy)ethyl)curcumin)

68.

RAW 264.7

Mouse macrophage line 264.7

69.

R f

Retention factor

70.

ROS

Reactive oxygen species

71.

RSD

Relative Standard Deviation

72.

SA

Scavenging activity

73.

SC 50

Scavenging concentration at 50%

74.

SD

Standard Deviation

75.

SKLM

Thin layer chromatography

76.

SOD

Superoxide dismutase

77.

SP

Product

78.

SRB

Sulforhodamine B

79.

t 1/2

Half-life

80.

Boc

tert -Butyloxycarbonyl

81.

TCA

Trichloroacetic acid

82.

THF

Tetrahydrofuran

83.

TLTK

References

84.

to country

Melting temperature

85.

UV

Ultraviolet spectroscopy

86.

ν ̃ max

Wave number

87.

V

Volume

88.

Ł

Chemical shift

LIST OF TABLES

Table 1.1. Table of pKa values ​​of curcumin molecule 4

Table 2.1. Raw materials and chemicals used in the study 43

Table 2.2. List of tools and equipment used 45

Table 2.3. Solubility classification table of a substance according to Vietnamese Pharmacopoeia V 53

Table 3.1. Results of synthesis of curcumin derivatives 83

Table 3.2. IR spectra results of curcumin derivatives 84

Table 3.3. MS spectra results of curcumin derivatives 85

Table 3.4. 1H-NMR spectral results of PH6, PH8 - PH12 derivatives 85

Table 3.5. Results of 1H-NMR spectral analysis of PH1-PH4, PH5, PH7, derivatives

and PH13 - PH16 86

Table 3.6. 13C-NMR spectral results of PH3, PH4, PH7, PH14 and PH15 derivatives ..86 Table 3.7. 13C-NMR spectral results of PH6 and PH8 - PH12 derivatives 87

Table 3.8. Results of determining the solubility of new derivatives of curcumin 88

Table 3.9. Results of antioxidant activity test of derivatives 89

Table 3.10. Inhibitory ability of NO production on RAW 264.7 cell line and the impact of the studied sample on the survival of RAW 264.7 cells 90

Table 3.11. Results of cytotoxic activity test of derivatives (µM) 91

Table 3.12. Results of comparison of biological activities of selected derivatives (µM)...92 Table 3.13. Results of Maestro docking on COX-1 target (PDB ID: 6Y3C) 94

Table 3.14. Maestro docking results on MCF-7 target (PDB ID: 4XO6) 95

Table 3.15. Results of the survey on the effect of reaction time on PH6 99 generation

Table 3.16. Results of the survey on the influence of molar ratio of reactants on the reaction to create PH6 100

Table 3.17. Results of the survey on the effect of solvent on reaction efficiency 100

Table 3.18. Results of the investigation of the effect of DMF solvent added to 101

Table 3.19. Best parameters for PH6 101 synthesis process

Table 3.20. Results of the survey on the effect of agent concentration on reaction efficiency at a scale of 5 g/batch 102

Table 3.21. Results of the survey on the influence of the method of loading the agent on the reaction efficiency at the scale of 5 g/batch 103

Table 3.22. Results of repeatability survey of PH6 synthesis process at 5 g/batch scale 104

Table 3.23. Summary table of reaction survey results, process development and scale-up of PH6 105 synthesis

Table 3.24. Results of the survey on the effect of mole ratio on the reaction efficiency

PH6 108

Table 3.25. Results of the reaction temperature survey to create PH9 108

Table 3.26. Results of reaction time survey to create PH9 109

Table 3.27. Summary table of the best parameters for the PH9 109 synthesis process

Table 3.28. Results of repeatability survey of PH9 synthesis process at 2 g/batch scale 111

Table 3.29. Summary table of reaction survey results, process development and scale-up of PH9 112 synthesis

Table 3.30. Thin layer chromatography results of PH9 derivative obtained at 20 g/batch scale

................................................................................................................................113

Table 3.31. Results of PH9 content according to the area standardization method 113

Table 3.32. Results of evaluating some quality indicators of PH9 114

Table 3.33. Proposed basic standards for potential 115 derivatives

Table 3.34. Solubility results of curcumin and PH9 at different pH environments

...................................................................................................................................115

Table 3.35. Log DpH results of PH9 at different pH environments 116

Table 3.36. Ear swelling over time 117

Table 3.37. Number of dead mice, external manifestations when drinking sample 118

Table 3.38. Results of monitoring the weight of mice in batches 119

Table 4.1. Table of 1H-NMR, 13C-NMR and DEPT spectral analysis results of PH9 146

Table 4.2. HSQC and HMBC two-dimensional spectral results of PH9 derivative 147

Table 4.3. Table of results of biological effects evaluation of curcumin derivatives according to modification position 157

LIST OF DIAGRAM


Scheme 2.1. Synthesis of carboxylic acid derivatives of curcumin and formation of sodium carboxylate salt 48

Scheme 2.2. Scheme of synthesis of disodium salt O,OƟ-bis(2-sulfonatoethyl)curcumin (PH5)

...................................................................................................................................48

Scheme 2.3. Synthesis of mono-O-(2-hydroxyethyl)curcumin (PH6) and di-

O-(2-hydroxyethyl)curcumin (PH7) 49

Scheme 2.4. Scheme of synthesis of mono-O-(2-(glutaryloxy)ethyl)curcumin (PH8) 49

Scheme 2.5. Scheme of synthesis of mono-O-(2-(succinyloxy)ethyl)curcumin (PH9) and mono-O-(2-(succinyloxy)ethyl)curcumin sodium salt (PH10) 49

Scheme 2.6. Scheme of synthesis of derivative PH11 and formation of salt PH12 50

Scheme 2.7. Scheme of the reaction for synthesizing sulfate salt PH13 from PH7 50

Scheme 2.8. Reaction scheme for the synthesis of glutarate diester PH14 from PH7 50

Scheme 2.9. Scheme of synthesis of diesters of di-O-(2-hydroxyethyl)curcumin 51

Scheme 2.10. Scheme of synthesis of hybrid derivatives of PH7 with valine 51


Diagram 3.1. PH1 64 synthesis reaction diagram

Diagram 3.2. PH2 65 synthesis reaction diagram

Scheme 3.3. Scheme of the reaction for synthesizing PH3 from PH1 65

Scheme 3.4. Scheme of the reaction for synthesizing PH3 from PH2 66

Diagram 3.5. PH4 67 synthesis reaction diagram

Scheme 3.6. Scheme of synthesis of sodium salt 2-bromoethanesulfonate 67

Scheme 3.7. Scheme of the reaction for synthesizing PH5 derivatives 68

Scheme 3.8. Scheme of PH6 synthesis reaction using 2-bromoethanol 69

Scheme 3.9. Scheme of the reaction for the synthesis of PH7 with 2-bromoethanol 70 as the reagent

Diagram 3.10. PH8 71 synthesis reaction diagram

Scheme 3.11. PH9 72 synthesis reaction scheme

Diagram 3.12. PH10 73 synthesis reaction diagram

Scheme 3.13. Scheme of synthesis of PH11 from PH6 using phosphoric acid 74

Scheme 3.14. Scheme of the reaction for the synthesis of PH11 from PH6 using phosphoryl oxychloride ...75

Scheme 3.15. PH12 76 synthesis reaction scheme

Scheme 3.16. PH13 77 synthesis reaction scheme

Scheme 3.17. PH14 78 synthesis reaction scheme

Scheme 3.18. PH15 79 synthesis reaction scheme

Scheme 3.19. Scheme of the synthesis reaction of N-Boc-valine 80

Figure 3.20. TG3 81 synthesis diagram

Figure 3.21. Schematic diagram of Boc group elimination from N-Boc-valine- bis-O-(2-hydroxyethyl)curcumin

...................................................................................................................................82

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