EP3625277A1 - Polyacetals phenoliques biodegradables ayant des proprietes antiradicalaires, antioxydantes et antimicrobiennes - Google Patents
Polyacetals phenoliques biodegradables ayant des proprietes antiradicalaires, antioxydantes et antimicrobiennesInfo
- Publication number
- EP3625277A1 EP3625277A1 EP18735356.0A EP18735356A EP3625277A1 EP 3625277 A1 EP3625277 A1 EP 3625277A1 EP 18735356 A EP18735356 A EP 18735356A EP 3625277 A1 EP3625277 A1 EP 3625277A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- phenolic
- group
- alkyl
- benzyl
- polyacetals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 229920006324 polyoxymethylene Polymers 0.000 title claims abstract description 59
- 239000003963 antioxidant agent Substances 0.000 title description 12
- 230000003078 antioxidant effect Effects 0.000 title description 12
- 230000000845 anti-microbial effect Effects 0.000 title description 10
- 230000002225 anti-radical effect Effects 0.000 title description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 23
- 125000000217 alkyl group Chemical group 0.000 claims description 20
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 claims description 19
- 150000002989 phenols Chemical class 0.000 claims description 16
- 229930182556 Polyacetal Natural products 0.000 claims description 15
- 125000003118 aryl group Chemical group 0.000 claims description 14
- 229910052727 yttrium Inorganic materials 0.000 claims description 14
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 8
- 238000006068 polycondensation reaction Methods 0.000 claims description 8
- 125000006239 protecting group Chemical group 0.000 claims description 8
- 230000006196 deacetylation Effects 0.000 claims description 7
- 238000003381 deacetylation reaction Methods 0.000 claims description 7
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 6
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 6
- 230000021736 acetylation Effects 0.000 claims description 6
- 238000006640 acetylation reaction Methods 0.000 claims description 6
- 150000001541 aziridines Chemical class 0.000 claims description 6
- 229910052801 chlorine Inorganic materials 0.000 claims description 6
- 239000000460 chlorine Substances 0.000 claims description 6
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 6
- 150000002118 epoxides Chemical class 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 125000001153 fluoro group Chemical group F* 0.000 claims description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 6
- 229910052740 iodine Inorganic materials 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 claims description 4
- 235000013305 food Nutrition 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 4
- 150000003077 polyols Chemical class 0.000 claims description 4
- 230000029936 alkylation Effects 0.000 claims description 3
- 238000005804 alkylation reaction Methods 0.000 claims description 3
- 238000005574 benzylation reaction Methods 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 238000005984 hydrogenation reaction Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 229940124597 therapeutic agent Drugs 0.000 claims description 3
- 230000020335 dealkylation Effects 0.000 claims description 2
- 238000006900 dealkylation reaction Methods 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims 3
- 229920000642 polymer Polymers 0.000 abstract description 29
- RRAFCDWBNXTKKO-UHFFFAOYSA-N eugenol Chemical compound COC1=CC(CC=C)=CC=C1O RRAFCDWBNXTKKO-UHFFFAOYSA-N 0.000 abstract description 24
- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 abstract description 13
- FGQOOHJZONJGDT-UHFFFAOYSA-N vanillin Natural products COC1=CC(O)=CC(C=O)=C1 FGQOOHJZONJGDT-UHFFFAOYSA-N 0.000 abstract description 13
- 235000012141 vanillin Nutrition 0.000 abstract description 13
- NPBVQXIMTZKSBA-UHFFFAOYSA-N Chavibetol Natural products COC1=CC=C(CC=C)C=C1O NPBVQXIMTZKSBA-UHFFFAOYSA-N 0.000 abstract description 11
- 239000005770 Eugenol Substances 0.000 abstract description 11
- UVMRYBDEERADNV-UHFFFAOYSA-N Pseudoeugenol Natural products COC1=CC(C(C)=C)=CC=C1O UVMRYBDEERADNV-UHFFFAOYSA-N 0.000 abstract description 11
- 229960002217 eugenol Drugs 0.000 abstract description 11
- 239000007858 starting material Substances 0.000 abstract 1
- 235000006708 antioxidants Nutrition 0.000 description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 5
- 108010029541 Laccase Proteins 0.000 description 5
- 150000001299 aldehydes Chemical group 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- WMYINDVYGQKYMI-UHFFFAOYSA-N 2-[2,2-bis(hydroxymethyl)butoxymethyl]-2-ethylpropane-1,3-diol Chemical compound CCC(CO)(CO)COCC(CC)(CO)CO WMYINDVYGQKYMI-UHFFFAOYSA-N 0.000 description 4
- 230000004071 biological effect Effects 0.000 description 4
- 238000010511 deprotection reaction Methods 0.000 description 4
- 230000002255 enzymatic effect Effects 0.000 description 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- -1 anti-inflammatory Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000010520 demethylation reaction Methods 0.000 description 3
- 238000006471 dimerization reaction Methods 0.000 description 3
- 239000002609 medium Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- KETPSFSOGFKJJY-UHFFFAOYSA-N Dehydrodieugenol Chemical compound COC1=CC(CC=C)=CC(C=2C(=C(OC)C=C(CC=C)C=2)O)=C1O KETPSFSOGFKJJY-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 2
- 244000061408 Eugenia caryophyllata Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 108090000854 Oxidoreductases Proteins 0.000 description 2
- 102000004316 Oxidoreductases Human genes 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 102000003992 Peroxidases Human genes 0.000 description 2
- 235000016639 Syzygium aromaticum Nutrition 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 125000003158 alcohol group Chemical group 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 229930188610 biseugenol Natural products 0.000 description 2
- ILAHWRKJUDSMFH-UHFFFAOYSA-N boron tribromide Chemical compound BrB(Br)Br ILAHWRKJUDSMFH-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 238000006264 debenzylation reaction Methods 0.000 description 2
- 230000017858 demethylation Effects 0.000 description 2
- 239000000539 dimer Substances 0.000 description 2
- HHEAADYXPMHMCT-UHFFFAOYSA-N dpph Chemical compound [O-][N+](=O)C1=CC([N+](=O)[O-])=CC([N+]([O-])=O)=C1[N]N(C=1C=CC=CC=1)C1=CC=CC=C1 HHEAADYXPMHMCT-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000013355 food flavoring agent Nutrition 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 108040007629 peroxidase activity proteins Proteins 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- ZDYVRSLAEXCVBX-UHFFFAOYSA-N pyridinium p-toluenesulfonate Chemical compound C1=CC=[NH+]C=C1.CC1=CC=C(S([O-])(=O)=O)C=C1 ZDYVRSLAEXCVBX-UHFFFAOYSA-N 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- HDTRYLNUVZCQOY-UHFFFAOYSA-N α-D-glucopyranosyl-α-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OC1C(O)C(O)C(O)C(CO)O1 HDTRYLNUVZCQOY-UHFFFAOYSA-N 0.000 description 1
- JDYHPXSOIGLGHW-UHFFFAOYSA-N 3-[3-[5-(2,3-dihydroxypropyl)-2-hydroxy-3-methoxyphenyl]-4-hydroxy-5-methoxyphenyl]propane-1,2-diol Chemical compound OC1=C(C=C(C=C1C1=CC(=CC(=C1O)OC)CC(CO)O)CC(CO)O)OC JDYHPXSOIGLGHW-UHFFFAOYSA-N 0.000 description 1
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZNZYKNKBJPZETN-WELNAUFTSA-N Dialdehyde 11678 Chemical compound N1C2=CC=CC=C2C2=C1[C@H](C[C@H](/C(=C/O)C(=O)OC)[C@@H](C=C)C=O)NCC2 ZNZYKNKBJPZETN-WELNAUFTSA-N 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 239000004386 Erythritol Substances 0.000 description 1
- UNXHWFMMPAWVPI-UHFFFAOYSA-N Erythritol Natural products OCC(O)C(O)CO UNXHWFMMPAWVPI-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241000297434 Stenotarsus subtilis Species 0.000 description 1
- HDTRYLNUVZCQOY-WSWWMNSNSA-N Trehalose Natural products O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-WSWWMNSNSA-N 0.000 description 1
- 238000007171 acid catalysis Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- HDTRYLNUVZCQOY-LIZSDCNHSA-N alpha,alpha-trehalose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-LIZSDCNHSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000001093 anti-cancer Effects 0.000 description 1
- 230000001430 anti-depressive effect Effects 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 230000002921 anti-spasmodic effect Effects 0.000 description 1
- 230000001147 anti-toxic effect Effects 0.000 description 1
- 239000000935 antidepressant agent Substances 0.000 description 1
- 229940005513 antidepressants Drugs 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000005418 aryl aryl group Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 239000004621 biodegradable polymer Substances 0.000 description 1
- 229920002988 biodegradable polymer Polymers 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000812 cholinergic antagonist Substances 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 description 1
- 229940009714 erythritol Drugs 0.000 description 1
- 235000019414 erythritol Nutrition 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 230000006203 ethylation Effects 0.000 description 1
- 238000006200 ethylation reaction Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000009920 food preservation Methods 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 150000002678 macrocyclic compounds Chemical class 0.000 description 1
- 239000002207 metabolite Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000011987 methylation Effects 0.000 description 1
- 238000007069 methylation reaction Methods 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 229930015698 phenylpropene Natural products 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- QROGIFZRVHSFLM-UHFFFAOYSA-N prop-1-enylbenzene Chemical compound CC=CC1=CC=CC=C1 QROGIFZRVHSFLM-UHFFFAOYSA-N 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G4/00—Condensation polymers of aldehydes or ketones with polyalcohols; Addition polymers of heterocyclic oxygen compounds containing in the ring at least once the grouping —O—C—O—
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P39/00—General protective or antinoxious agents
- A61P39/06—Free radical scavengers or antioxidants
Definitions
- the present invention relates to phenolic polymers. It relates more particularly phenolic polyacetals, their method of preparation and their applications. By way of example, these polymers can be obtained from vanillin or eugenol. In a particular embodiment, the phenolic functions of the polyacetals are free.
- the polyacetals according to the invention can be obtained from biosourced raw materials.
- Vanillin (C 8 H 8 0 3 ) is a metabolite, mainly known for its aromatic properties. It has a wide range of applications in the food industry as a flavoring agent and in perfumery as an additive. It is also used as an antioxidant, antifoam, vulcanization inhibitor and precursor for the pharmaceutical and agrochemical industries.
- Eugenol the main component of Clove Essential Oil (Eugenia caryophyllata L), is an inexpensive and readily available phenylpropene, known since antiquity, and used as a medicinal agent, but also for seasoning and bleaching. food preservation.
- Eugenol is considered a natural antimicrobial, but it is also used as a perfume and flavoring agent in different varieties of cosmetics and food products.
- eugenol has shown several other interesting biological activities, acting as antioxidant, anti-inflammatory, antispasmodic, antidepressant, anti-toxic and anticancer.
- Vanillin and eugenol are both widely exploited, serving as raw material for the synthesis of other natural products and their analogues, bioactive compounds, heterocycles, macrocycles and especially polymers.
- the anti-radical, anti-oxidant and antimicrobial properties of these phenolic compounds are generally lost during the synthesis of polymers. It would be interesting to combine the properties of phenolic compounds with those of polymers known for their thermal stability. In addition, in a sustainable development approach, it is desirable to favor biobased raw materials to manufacture such polymers. State of the prior art and its disadvantages
- the polymerization of phenolic compounds can be obtained by various methods known to those skilled in the art such as a direct mono- or di-functionalization of the compound, a grafting of the compound on an existing polymer or a coupling of two compounds to give a bi-aromatic monomer.
- a method of dimerization of phenolic compounds in the presence of laccase has been described in US Patent 2016/257846.
- Processes of polymerization by formation of acetals have been described.
- US applications 2015/0025278 and US 2015/0031847 describe the preparation of aromatic polyacetals; these, however, have no phenol function, and therefore do not have the properties related to these functions.
- the inventors have provided novel aromatic biodegradable aromatic polymeric structures in which the phenol functions are free conferring on them antiradical, antioxidant and antimicrobial properties, as well as a process for the preparation of such polymers.
- polyacetal-type polymers by engaging these aldehyde functions in acetal bonds (labile bonds under aqueous conditions) with polyols such as pentaerythritol, di (trimethylolpropane), trehalose, 3,3 '- (6,6'-dihydroxy-5,5'-dimethoxy- [1,1'-biphenyl] -3,3'-diyl) bis (propane-1,2-diol) or 1,2,4,5-benzenetraol. Since the acetal bonds are labile under aqueous conditions, the polyacetal-type polymers are biodegradable under aqueous conditions. In addition, they have the same properties as the phenols from which they are derived (eg, antioxidant, antimicrobial) ( Figure 2). The properties of these new polyacetal polymers are therefore very interesting.
- polyols such as pentaerythritol, di (trimethylolpropane), trehalose, 3,3
- polyacetals can also be obtained from eugenol.
- a first object of the present invention relates to a process for the preparation of phenolic polyacetal compounds of formula (I), (II) or (III):
- R 1, R 1, R 2, R '2, R 3 and R' 3 are identical to or different from each other and each represents a hydrogen atom (H), a chlorine atom (Cl), a bromine atom ( Br), an iodine atom (I), a fluorine atom (F), an alkyl group, a benzyl, X-alkyl, optionally substituted, X-benzyl, optionally substituted, X-acyl, B (OR ') 2 , NH-R', N0 2 , S-R'-O or S0 2 -R
- R ' represents an alkyl group or an aryl group
- R 4 and R ' 4 represent H or a protecting group of acetyl, alkyl (methyl, ethyl %) or benzyl (Bn).
- Y and Y ' are identical to or different from each other and each represents a deconjugant group having no epoxide nucleus, no aziridine nucleus or phenol group,
- Z is a molecule capable of forming two acetal functions with the aldehydes of the bis-aromatic compounds
- n is a positive integer, comprising the following steps:
- a method according to the invention comprising the steps a. to c. allows to prepare polyacetals whose phenolic functions are protected.
- R4 and R4 ' are both a protecting group and therefore the phenolic functions of the polymer are protected.
- the method according to the invention may further comprise a step d. corresponding to a step of deacetylation and / or dealkylation and / or hydrogenation of the polyacetals formed in step c. to form polyacetals of which at least a part of the phenol functions are free.
- all the phenolic functions of the polymer are free, with R 4 and R 4 > representing an H.
- the term "deconjugant group” means a group which does not allow a conjugation between the aromatic nucleus (ie, not allowing the delocalization of the electrons from the aromatic nucleus, or else electrically isolating the aromatic nucleus) and the substituent aldehyde carrier in the para position of OR 4 .
- the deconjugating groups Y and Y ' may correspond to a saturated alkyl chain or a saturated carbon ring.
- Z is a molecule capable of forming two acetals, that is to say represents any type of molecule comprising at least 4 alcohol functions.
- the tetraol of formula Z (OH) 4 may be erythritol, pentaerythritol or a tetraol derivative such as ditrimethylolpropane.
- Figure 1 summarizes, for illustrative purposes, the various steps of such a method.
- the fact that the polyacetals comprise "free phenol functions" means that at least part of the phenol functions of the polymers are free. They can all be free, or some can be protected.
- the polyacetals according to the invention comprise at least one free phenolic function.
- a "protected phenolic function” is a phenolic function containing a "cleavable” protecting group chosen from an alkyl (methyl, ethyl, etc.) group, a benzyl (Bn) group or an acetyl group.
- the protection with an acetyl group has the advantage of allowing the deprotection of the phenolic function in a basic aqueous medium.
- the phenolic function is protected by acetylation.
- the oxidation reaction of step a. can be carried out in the presence of peroxidase (HRP), metals (e.g., copper, iron such as iron sulfate), or oxidases such as laccases.
- HRP peroxidase
- metals e.g., copper, iron such as iron sulfate
- oxidases such as laccases.
- the oxidation reaction of step a. is performed in the presence of laccase.
- step a. of a process carried out from vanillin and eugenol are shown in FIG.
- the enzymatic dimerization conditions applied in step a are the following :
- Step b. protection of the phenol functions may consist of alkylation (especially methylation or ethylation) or acetylation or benzylation, or a combination of two or three of these reactions.
- the phenol functions are acetylated in order to make it possible to "release" by deacetylation (in particular under basic conditions) these functions after polycondensation.
- deacetylation in particular under basic conditions
- FIG. 3 An example of a process involving acetylation and deacetylation is shown in Figure 3.
- step c. can be carried out under reduced pressure and can be catalyzed by an acid such as para-toluenesulphonic acid, acid resins, pyridinium p-toluenesulphonate (PPTS).
- PPTS pyridinium p-toluenesulphonate
- This step requires the presence of polyalcohols whose number of alcohol function is greater than or equal to 4.
- the polycondensation step is carried out in the presence of tetraols.
- tetraols may be for example di-trimethylolpropane, pentaerythritol.
- Step d. deacetylation and / or demethylation and / or debenzylation of the polyacetals can be carried out:
- a base for example pyrrolidine or carbonate
- Figure 3 illustrates an example of a process for preparing phenolic polyacetals from vanillin.
- the polyacetals obtained have interesting thermal properties, in particular a very high stability at temperatures above 170 ° C, or even above 300 ° C.
- the polyacetals obtained have biological properties of interest related to the presence of free phenols: they retain the properties of the starting phenolic compounds, especially their antioxidant, anti-radical and antimicrobial properties.
- the polyacetal polymers Compared to phenolic dimeric compounds, the polyacetal polymers exhibit a very high degree of biodegradability, that is to say that their catalytic degradation is obtained in aqueous medium by simple acid catalysis (pH ⁇ 7), without enzymatic intervention.
- the method according to the invention allows the use of biosourced raw materials for the preparation of highly biodegradable polymers carrying multiple biological activities and of great interest. It is however possible to implement the process using raw materials that are not bio-based.
- a second subject of the invention relates to a polyacetal phenolic compound of general formula (I), (II) or (III):
- R 1, R 1, R 2, R '2, R 3 and R' 3 are identical to or different from each other and each represents a hydrogen atom (H), a chlorine atom (Cl), a bromine atom ( Br), an iodine atom (I), a fluorine atom (F), an alkyl group, a benzyl, X-alkyl, optionally substituted, X-benzyl, optionally substituted, X-acyl, B (OR ') 2 , NH-R', N0 2 , S-R'-O or S0 2 -R
- R ' represents an alkyl group or an aryl group
- R 4 and R ' 4 represent a protective group of acetyl, alkyl or benzyl type
- Y and Y ' are identical to or different from each other and each represents a deconjugant group having no epoxide nucleus, no aziridine nucleus or phenol group, Z is a molecule capable of forming two acetal functions with the aldehydes of the bis-aromatic compounds,
- n is a positive integer.
- the phenolic polymers of general formula (I) relate to polyacetals comprising protected phenol functions when R 4 and R ' 4 are protecting groups.
- polyacetals can be obtained from phenolic compounds such as vanillin or eugenol.
- a polyacetal obtained from vanillin will for example be composed of a chain of entities (monomers) of formula (II) as represented below. It will be noted here the presence of two free phenol functions per monomer.
- a third object of the invention relates to the use of polyacetals according to the invention and in particular polyacetals having free phenol functions in any type of industry: agro-food, cosmetics, hygiene and therapy.
- Polyacetals exhibiting free acetal functions retain the properties of the phenolic compounds that compose them, as shown schematically in FIG. 4. They exhibit, in particular, very good anti-radical / antioxidant (DPPH test) and antimicrobial activities, in particular vis-à-vis Gram-like bacteria such as E. Coli and Gram + bacteria such as B. Subtilis. Thus, they can be used as a therapeutic agent.
- DPPH test very good anti-radical / antioxidant
- antimicrobial activities in particular vis-à-vis Gram-like bacteria such as E. Coli and Gram + bacteria such as B. Subtilis.
- R 1, R 1, R 2, R '2, R 3 and R' 3 are identical to or different from each other and each represents a hydrogen atom (H), a chlorine atom (Cl), a bromine atom ( Br), an iodine atom (I), a fluorine atom (F), an alkyl group, a benzyl, X-alkyl, optionally substituted, X-benzyl, optionally substituted, X-acyl, B (OR ') 2 , NH-R', N0 2 , S-R'-O or S0 2 -R
- R ' represents an alkyl group or an aryl group
- R 4 and R ' 4 representing H or an acetyl, alkyl or benzyl protecting group
- Y and Y ' are identical to or different from each other and each represents a deconjugant group having no epoxide nucleus, no aziridine nucleus or phenol group,
- Z is a molecule capable of forming two acetal functions with the aldehydes of the bis-aromatic compounds
- n is a positive integer
- Polyacetals whose phenolic functions are protected can also be used in this type of application as soon as these functions are released at the time of use; this is easily conceivable for polyacetals bearing an acetyl-type protective group, as has been explained previously.
- the polyacetal polymers can be used, for example, in encapsulation or packaging systems for the food industry. Stable in a basic medium, they degrade in an acidic medium, releasing the phenolic starting dimers which are biologically active but also their content in the case of encapsulation.
- FIG. 1 Representation of the different steps of a process for the preparation of polyacetals carrying free phenolic functions.
- Figure 2 Representation of bisphenols derived from enzymatic dimerization on the one hand vanillin (bisvanillin on the left) and on the other hand eugenol (biseugenol on the right).
- Figure 3 Detailed representation of a process for synthesizing a polyacetal with free phenol functions, from vanillin.
- the dimeric molecules were then acetylated or methylated to prevent the phenols from being involved in the acetal functions during the polycondensation reaction, which would prevent any biological activity.
- prior oxidation was performed to obtain the dialdehyde.
- the acetylated dialdehydes were then engaged in a polycondensation, under reduced pressure, with polyols (for example di-trimethylolpropane, pentaerythritol), catalyzed by an acid (para-toluenesulfonic acid).
- polyols for example di-trimethylolpropane, pentaerythritol
- an acid para-toluenesulfonic acid
- the polymers were obtained with a low polydispersity index (1.1) and molar masses between 7 and 35 kDa.
- Acetylated polyacetals obtained have shown a very high thermal stability, above 170 ° C and even for most above 300 ° C (temperatures for 10% degradation under an inert atmosphere) which allows to consider their use in plastics processes.
- the glass transition temperatures range from 35 to 120 ° C depending on the nature of the repeating pattern. he is also It is important to note that the deprotection of the polyacetals carried out to give the phenolic polyacetals does not lead to a significant change in the glass transition temperature.
- the formed polyacetals have a very low solubility in most organic solvents (eg, ethanol, acetone, ethyl acetate, dichloromethane, dimethylsulfoxide). They are not soluble in water but degrade rapidly while they are stable in organic media.
- Phenolic dialdehydes like the polymers derived from them, have shown an ability to trap the free radical of DPPH demonstrating anti-radical (and antioxidant) activity.
- Bisvanillin which is obtained by degradation of polyacetal, whether or not acetylated, has shown antimicrobial potency on both Gram - (E. Coli) and Gram + (S. Subtilis) bacteria.
- Gram - (E. Coli) and Gram + (S. Subtilis) bacteria For oxidized biseugenol, the tests are in progress and already show promising results for the acetylated compound.
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Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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FR1754374A FR3066493A1 (fr) | 2017-05-17 | 2017-05-17 | Polyacetals phenoliques biodegradables ayant des proprietes antiradicalaires, antioxidantes et antimicrobiennes |
FR1758091A FR3066494B1 (fr) | 2017-05-17 | 2017-09-01 | Polyacetals phenoliques biodegradables ayant des proprietes antiradicalaires, antioxydantes et antimicrobiennes |
PCT/FR2018/051176 WO2018211213A1 (fr) | 2017-05-17 | 2018-05-16 | Polyacetals phenoliques biodegradables ayant des proprietes antiradicalaires, antioxydantes et antimicrobiennes |
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EP3625277A1 true EP3625277A1 (fr) | 2020-03-25 |
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EP18735356.0A Withdrawn EP3625277A1 (fr) | 2017-05-17 | 2018-05-16 | Polyacetals phenoliques biodegradables ayant des proprietes antiradicalaires, antioxydantes et antimicrobiennes |
Country Status (3)
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EP (1) | EP3625277A1 (fr) |
FR (2) | FR3066493A1 (fr) |
WO (1) | WO2018211213A1 (fr) |
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US9410016B2 (en) | 2013-07-16 | 2016-08-09 | Dow Global Technologies Llc | Aromatic polyacetals and articles comprising them |
US8962779B2 (en) | 2013-07-16 | 2015-02-24 | Dow Global Technologies Llc | Method of forming polyaryl polymers |
FR3011841B1 (fr) * | 2013-10-14 | 2016-09-16 | Agronomique Inst Nat Rech | Polymere phenolique a liaisons biaryles 5-5, procede pour sa preparation et utilisations |
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2017
- 2017-05-17 FR FR1754374A patent/FR3066493A1/fr active Pending
- 2017-09-01 FR FR1758091A patent/FR3066494B1/fr active Active
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2018
- 2018-05-16 WO PCT/FR2018/051176 patent/WO2018211213A1/fr unknown
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FR3066494B1 (fr) | 2020-01-17 |
FR3066494A1 (fr) | 2018-11-23 |
FR3066493A1 (fr) | 2018-11-23 |
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