Khoom Taw qhia
| Syringaldehyde Cov ntaub ntawv yooj yim |
| Txheej txheem cej luam Natural sources Extraction and isolations Biological activity and applications References |
| Khoom npe: | Syringaldehyde |
| Synonyms: | syringealdehyde;Syringylaldehyde;3,5-Dimethoxy-4-hydroxybenzaldehyde~4-Hydroxy-3,5-dimethoxybenzaldehyde;Syringaldehyde (4-Hydroxy 3,{{ 8}}dimethoxybenzaldehyde); SYRINGALDEHYDE 99%; Syringealdehyde 98%; Syringaldehyde, 98+%; Syringealdehyde 98% |
| CAS: | 134-96-3 |
| MF: | C9H10O4 |
| MW: | 182.17 |
| EINECS: | 205-167-5 |
| Khoom Categories: | Aromatic Aldehydes & Derivatives (hloov chaw); Lub tsev thaiv; Aldehydes; Tsev Blocks; C9; Carbonyl Compounds; Chemical Synthesis; Organic Building Blocks; bc0001 |
| Mol File: | 134-96-3.mol |
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| Syringaldehyde Chemical Properties |
| Melting point | 110-113 degree (lit.) |
| Boiling point | 192-193 degree 14 mm Hg (lit.) |
| ceev | 1.013 |
| Refractive Index | 1.4500 (kwv yees) |
| FEMA | 4049|4-HYDROXY-3,5,-DIMETHOXY BENZALDEHYDE |
| Fp | 192-193 degree / 14 hli |
| cia temp. | Khaws nyob rau hauv qhov chaw tsaus, kaw hauv qhuav, Chav Kub |
| solubility | Chloroform, Methanol (me ntsis) |
| daim ntawv | Crystalline hmoov |
| pka ua | 7.8 0± 0.23 (Tshaj tawm) |
| xim | Lub teeb daj-ntsuab rau xim av |
| tsw | ntawm 100.00%. me me yas woody tonka qab zib |
| Hom tshuaj tsw qab | ntsuab |
| Dej Solubility | heev sparingly soluble |
| rhiab heev | Huab cua Sensitive |
| Merck | 14,9015 |
| JECFA Number | 1878 |
| BRN | 784514 |
| Kev ruaj ntseg: | Hygroscopic |
| LogP | 1.30 |
| CAS DataBase Reference | 134-96-3(CAS DataBase Reference) |
| NIST Chemistry Reference | Benzaldehyde, 4-hydroxy-3, 5-dimethoxy-(134-96-3) |
| EPA Tshuaj Registry System | Syringaldehyde (134-96-3) |
| Cov ntaub ntawv kev nyab xeeb |
| Hazard Codes | Xn, xis |
| Risk Statements | 22-36/37/38 |
| Cov lus hais txog kev nyab xeeb | 26-37/39-36 |
| WGK Germany | 3 |
| RTECS | wb 5760000 |
| Ceeb toom | Irritant |
| TSCA | Yog lawm |
| HS Code | 29124900 |
| MSDS Cov Ntaub Ntawv |
| Tus kws kho mob | Lus |
|---|---|
| 3, 5-Dimethoxy-4-hydroxybenzaldehyde | Lus Askiv |
| SigmaAldrich | Lus Askiv |
| ACROS | Lus Askiv |
| ALFA | Lus Askiv |
| Syringaldehyde Siv thiab Synthesis |
| Txheej txheem cej luam | Syringaldehyde yog ib qho cog lus muaj ntxhiab aldehyde uas tsis tsim nyog nyob hauv qhov tsis meej. Nws muaj cov khoom tsim nyog bioactive thiab yog, yog li ntawd, siv nyob rau hauv pharmaceuticals, zaub mov, tshuaj pleev ib ce, textiles, pulp thiab ntawv industries, thiab txawm nyob rau hauv kev siv tshuaj lom neeg. Feem ntau, cov khoom siv hluavtaws ntawm syringaldehyde yog siv. Qhov kev txhawj xeeb txog kev nyab xeeb puas tau nce ntxiv ntawm cov khoom siv hluavtaws antioxidants thiab cov teebmeem kev phom sij ntawm cov tshuaj chemo-kev kho mob, nrog rau lawv cov nqi siab.[1], tau tsim txoj hauv kev tshiab rau kev txhim kho cov khoom pheej yig dua, ruaj khov, thiab qhov tseem ceeb tshaj plaws, cov tshuaj tiv thaiv oxidants, tshuaj, thiab khoom noj khoom haus additives.[2]. Syringaldehyde, ib qho chaw pom tsuas yog nyob rau hauv ib feeb kom muaj nuj nqis hauv qhov xwm txheej, ntseeg tau tias yog qhov muaj txiaj ntsig zoo uas phim cov lus hais saum toj no. Syringaldehyde, los yog 3, 5-dimethoxy-4-hydroxybenzaldehyde, yog ib qho tshwm sim ib txwm muaj nrog cov yam ntxwv bioactive uas muaj nyob hauv tsev neeg phenolic aldehyde. Syringaldehyde yog qhov zoo sib xws hauv cov qauv rau nws cov khoom tsis zoo, vanillin, thiab nws muaj cov ntawv sib piv.[3]. Txawm hais tias tsis zoo li kev lag luam zoo li vanillin, syringaldehyde chemistry thiab nws cov kev tswj hwm tau tshwm sim sai heev, tshwj xeeb tshaj yog tom qab tshawb pom nws lub luag haujlwm tseem ceeb hauv nruab nrab ntawm cov tshuaj tua kab mob Trimethoprim, Bactrim, thiab Biseptol.[4]. Bactrim lossis Biseptol yog kev sib xyaw ntawm Trimethoprim nrog sulfamethoxazole. Cov tshuaj no yog cov kab mob bactericides.  Txheeb xyuas cov qauv tshuaj ntawm syringaldehyde |
| Ntuj qhov chaw | Ib qho zoo heev ntawm syringaldehyde nyob rau hauv lub cell phab ntsa ntawm cov nroj tsuag. Ua tus thib ob feem ntau biopolymer tsuas yog rau cellulose, lignin muaj kev txuas ntxiv, txuas ntxiv, thiab pheej yig ntawm syringaldehyde. Qhov no tau cog lus tseg, txij li lignin raug muab pov tseg raws li pov tseg los ntawm kev lag luam pulping thiab tseem yog cov khoom lag luam loj los ntawm cov txheej txheem hloov pauv biomass-rau-ethanol.[5]. Txawm tias muaj tseeb tias txoj hmoo ntawm lignin xaus ntawm bio-fuel refinery[6], nws cov khoom zais cia tuaj yeem muab rho tawm ua ntej nws hloov mus rau biomass feedstock. Txawm hais tias qhov kev coj ua no tsis tshwm sim rau kev rov qab los ntawm syringaldehyde, nws maj mam tshwm sim, txij li cov khoom muaj nqis ntxiv los ntawm cov khoom pov tseg muaj kev cia siab rau yav tom ntej. Ntau xyoo ntawm kev tshawb fawb tedious tau coj mus rau tam sim no txoj kev loj hlob thiab kev nkag siab ntawm cov synthesis ntawm syringyl unit nyob rau hauv cov nroj tsuag. Lignin yog ib qho amorphous heteropolymer, elucidation ntawm nws txoj kev biosynthetic tsis yog ib txoj haujlwm yooj yim. Txhawm rau kom txaus siab rau qhov nyuaj thiab ntau haiv neeg ntawm qhov xwm txheej thiab nws cov yam ntxwv tshwj xeeb, nws yog ib qho tseem ceeb kom paub tias yuav ua li cas lub syringyl unit los rau hauv lub neej hauv lignin. Tsis tas li ntawd, lub hauv paus chiv keeb ntawm cov tshuaj no tsis tau raug tshuaj xyuas zoo. Protolignin (naturally tshwm sim lignin) txawv nyob rau hauv molecular make-up los ntawm cov nroj tsuag mus rau cog thiab txawm los ntawm cell mus rau cell[7]. Kev tshawb fawb pom tau hais tias Arabidopsis mutants tsis ncaj ncees lawm txij li thaum lawv tsis muaj lignified interfascicular fibers, muab pov thawj tias macro-metabolite lignin yog lub luag hauj lwm rau cov qauv kev ncaj ncees ntawm cov nroj tsuag. Lignin tseem muab cov nroj tsuag nrog lub vascular system rau kev xa dej thiab cov kuab tshuaj[8]. Txoj kev biosynthetic ntawm protolignin feem ntau yog los ntawm kev tshawb pom thiab kev ua haujlwm ntawm cov enzymes uas ua rau monolignols syntheses ntawm pcoumaryl, coniferyl, thiab sinapyl alcohols, uas lawv tsim cov hydroxyphenyl (H), guaiacyl (G), thiab syringyl (S) units. hauv lignin, feem. Cov chav no sib txawv raws li qhov sib txawv ntawm cov qib sib txawv ntawm cov tshuaj methoxy[7]. Cov hlab ntsha xylem hauv cov nroj tsuag tau paub tias muab ob qho tib si kev txhawb nqa thiab kev siv dej. Cov hlab ntsha no feem ntau yog tsim los ntawm G-lignin thiab tsis muaj S-lignin vim cov noob caj noob ces encode rau sinapyl cawv yog tsis muaj gymnosperms.[9]. Vim tias G-lignin tsis muaj cov tshuaj angiosperms, cov hlwb tshwj xeeb ntxiv hu ua cov hlwb fiber ntau muab kev txhawb nqa txhua yam xav tau.[10]. Fascinatingly, hauv angiosperms, cov hlwb fiber ntau yog tsim los ntawm S-lignin. Cov noob koom nrog hauv S-lignin synthesis tau tsim ntau dua li G-lignin, ua pov thawj ntawm evolution ntawm cov nroj tsuag softwood (gymnosperms) mus rau hardwood nroj tsuag (angiosperms)[11]. Tsis tas li ntawd, ntau yam nroj tsuag feem ntau siv los ua ntoo thiab qoob loo nrog lawv cov ntsiab lus lignin txheeb xyuas. Cov Slignins no yog qhov los ntawm cov syringaldehyde tuaj yeem tau txais thaum cov ntaub ntawv lignocellulosic tau txais qee qhov kev cuam tshuam oxidation. |
| Extraction thiab cais tawm | Qhov muaj feem pua ntawm cov precursors hauv cov qauv lignin nruj me ntsis txiav txim siab tsim cov phenolic tebchaw xws li vanillin lossis syringaldehyde. Nws dhau los ua qhov tseem ceeb hauv kev tsim cov phenolic aldehydes thaum lub lignin raug txo qis los yog kev kho tshuaj. Nyob rau hauv ib txoj kev tshawb fawb siv lignin oxidation, nyob rau hauv uas lub cawv ntawm lignin keeb kwm, kev mob ntawm zus tau tej cov, thiab hom kev kho ua ntej ntawm tau txais yields ntawm vanillin thiab syringaldehyde raug tshuaj xyuas. Cov txiaj ntsig tau qhia txog kev sib tw ntawm lignin fragments (syringyl fragments thiab guaiacyl fragments) condensation thiab lignin oxidation rau hauv aldehydes[8]. Nws tau txais txiaj ntsig siab tshaj plaws ntawm 14% rau tag nrho phenolic aldehydes (syringaldehyde + vanillin), raws li nitrobenzene oxidation siv lignin precipitated los ntawm kraft dub cawv nrog ntxiv ntawm calcium ntsev yaj nyob rau hauv dej soluble cawv. Hauv lwm txoj kev tshawb fawb, cov txiaj ntsig ntawm li 50 txog 59.7% syringaldehyde thiab vanillin nyob rau hauv qhov sib npaug ntawm tag nrho cov phenolic aldehydes tau txais los ntawm nitrobenzene oxidation los ntawm lignin rho tawm los ntawm straw nplej.[7]. Syringaldehyde tau raug tshaj tawm tias tau muab cais thiab tshuaj xyuas los ntawm cov txheej txheem recrystallization. Kev kawm qub[12]Siv cov txheej txheem recrystallization ntawm cov khoom oxidation ntawm pob kws stems ntawm ib qho ntawm cov feem siv dej thiab tau txais syringaldehyde nrog ib qho qhia txog melting point ntawm 110 txog 112 degree. Nws kuj tau tshaj tawm tias oxidation ntawm pob kws stems tsim 3.2% crude yields thiab 2.6% ntshiab syringaldehyde khoom. Hauv kev tshawb fawb ntawm syringaldehyde muaj pes tsawg leeg hauv angiosperm monocotyledons thiab dicotyledons[13], cov txheej txheem recrystallization tau siv los ntxuav cov syringaldehyde sublimate. Txoj kev tshawb no tau tshaj tawm cov txiaj ntsig ntawm tag nrho cov phenolic aldehydes (vanillin thiab syringaldehyde) hauv monocotyledons ntawm 21 txog 30%, thiab dicotyledons ntawm 39 thiab 48%. |
| Kev ua haujlwm lom neeg thiab kev siv | Kev nce qib hauv cov cuab yeej tshuaj ntsuam xyuas ua ke nrog kev ua tiav hauv chemistry thiab pharmacology tau tso cai rau kev txheeb xyuas, ntsuas, thiab cais cov phenolic aldehydes rau ntau hom kev siv xws li tshuaj tua kab mob antioxidants, tshuaj tua kab mob los yog tshuaj tua kab mob, thiab cov tshuaj tiv thaiv kab mob hauv cov tshuaj. Hauv kev lag luam zaub mov kuj tseem muaj kev nyiam siv cov tshuaj tsw qab uas tshwm sim uas muaj cov tshuaj tua kab mob antioxidant thiab cov tshuaj tua kab mob, yog li muab cov khoom muaj peev xwm ntawm nonsynthetic preservatives thiab additives. Tsuas yog qhov kev sim ua ntej hauv vitro tau tshaj tawm feem ntau, tab sis thaj chaw tshawb fawb tshiab thiab daim ntawv thov ntawm syringaldehyde tau raug txheeb xyuas. Ua raws li qhov no hauv siab, qee qhov qhia txog bioactive zog ntawm syringaldehyde tau ua piv txwv ntawm no. Antioxidant muaj peev xwm Ib txoj kev tshawb fawb ntsig txog cov qauv motifs ntawm syringaldehyde thiab lwm yam benzaldehydes rau lawv cov peev xwm antioxidant tau los ntawm[14]. Nyob rau hauv txoj kev tshawb no pom muaj syringaldehyde nyob rau hauv tsawg qhov ntau pom tau impressive tshwm sim nyob rau hauv peroxyl scavenging kev ua si, raws li CB assay. Nws cov haujlwm antioxidant tau sau tseg kom siab tshaj li ntawm 6 npaug ntawm protocatechuic aldehyde. Qhov siab dua tus nqi sib npaug Trolox (TEV), ntau cov khoom siv tshuaj tua kab mob antioxidant yuav muaj. Tus nqi no txo qis hauv qhov kev txiav txim los ntawm syringaldehyde> protocatechuic aldehyde> vanillin. Txoj kev no ntsuas lub peev xwm ntawm cov molecules nrog cov khoom siv antioxidant los tua ABTS, uas yog xiav-ntsuab chromophore nthuav tawm cov yam ntxwv nqus ntawm 734 nm. Lub peev xwm tiv thaiv ntawm cov molecule yog piv nrog Trolox, vitamin-E analog. Raws li lawv txoj kev tshawb fawb, qhov kev hloov pauv dimethoxy hauv syringaldehyde nrog rau nws cov syringol moiety tau lees paub rau kev nthuav tawm cov khoom muaj zog antioxidant.[14]. Antimicrobial / antifungal kev ua haujlwm Fillat et al. (2012)[15]tau kawm txog cov teebmeem ntawm cov tsis-leachable low molecular hnyav phenols nrog lactase ntawm unbleached flax fibers nyob rau hauv tsim bio-hloov pulp thiab ntawv. Cov kws tshawb fawb tsom mus rau cov tshuaj tiv thaiv kab mob ntawm syringaldehyde thiab acetosyringone (ib qho txiaj ntsig ntawm syringaldehyde) hauv kev txo cov pejxeem ntawm Staphylococcus aureus (Gram+), Klebsiella pneumonia (Gram-), thiab Pseudomonas aeruginosa (Gram-), uas paub dav dav rau cov kab mob. nyob rau hauv tib neeg. Cov pejxeem ntawm Klebsiella pneumonia raug txo mus rau 61% los ntawm syringaldehyde, whereas acetosyringone tau txo qis mus txog 99%. Nyob rau hauv cov ntaub ntawv ntawm Staphylococcus aureus, nws txo cov pej xeem los ntawm syringaldehyde yog 55%, uas yog 15% siab dua acetosyringone. Lwm cov kab mob, Pseudomonas aeruginosa, tau txo los ntawm 71% siv syringaldehyde thiab mus rau staggering 97% qib los ntawm acetosyringone. Lub luag haujlwm ntawm syringaldehyde ua tus neeg sawv cev tiv thaiv kab mob tiv thaiv kab mob tseem ceeb Candida guilliermondii zoo li tau cog lus tseg. Nws tau tshaj tawm tias syringaldehyde ntse inhibited C. guilliermondii kev loj hlob tus nqi thiab txo xylitol ntau lawm zoo. Cov nyhuv fungicidal feem ntau yog vim qhov aldehyde moiety. Cov hydroxyl hloov pauv hauv syringaldehyde yog xav tias ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov nyhuv fungicidal.[16] Tus neeg nruab nrab Syringaldehyde yog ib qho ntawm thawj qhov kev sib haum xeeb laccase pom. Nws tau raug tshaj tawm tias yog siv los ua tus neeg nruab nrab hauv kev degradation ntawm indigo carmine los ntawm cov kab mob laccase (benzenediol oxygen oxidoreducase) tau los ntawm cov kab mob -Proteobacterium JB[18]. Txoj kev tshawb fawb tau lees paub tias syringaldehyde tuaj yeem ua rau kom qhov degradation ntawm indigo carmine los ntawm 57%. Kev txhim kho degradation tau ua tau los ntawm electron pub dawb methyl thiab methoxy hloov pauv. Syringaldehyde kuj tseem siv los ua tus neeg nruab nrab hauv cov txheej txheem laccase-pab biobleaching. Hauv cov txheej txheem no, cov khoom siv hluavtaws xws li HBT, violuric acid, thiab promazine tau siv. Lwm qhov kev tshawb fawb tau tsom mus rau cov txiaj ntsig zoo ligninderived natural mediators, suav nrog syringaldehyde tau los ntawm kev siv cov dej cawv thiab cov khoom siv cog siv hauv cov ntawv pulp laccase-mediator delignification txheej txheem ua ke nrog peroxide bleaching.[17]. Organic markers nyob rau hauv ntoo pa luam yeeb Rau kev pom zoo ntawm cov pa roj carbon monoxide nyob rau hauv cov pa luam yeeb, biomarkers los yog molecular tracers yog ua hauj lwm raws li cov cim qhia los ntawm lub hauv paus chiv keeb los ntawm tej yam ntuj tso khoom ntawm cov nroj tsuag thiab lawv cov tom qab combustion residuals. Phenolic tebchaw (xws li syringaldehyde), uas yog tau los ntawm lignin pyrolysis nyob rau hauv cov nroj tsuag, tau raug npaj raws li tracers tshwj xeeb rau cov nroj tsuag taxonomy. Syringaldehyde yog dav siv los ua tus cim molecular rau biomass pa luam yeeb los ntawm aerosol cov teeb meem, uas yog los saib xyuas qhov chaw muaj kuab paug thiab txheeb xyuas qhov twg ntawm combustion.[19]. Txij li thaum lub ntiaj teb kev hloov pauv huab cua cuam tshuam rau qhov tshwm sim ntawm cov hluav taws kub nyhiab, qhov yuav tsum tau txheeb xyuas qhov tseeb ntawm huab cua los ntawm cov pa luam yeeb zoo li tseem ceeb heev.[20]. Syringaldehyde zoo li ua lub luag haujlwm tseem ceeb hauv kev tshawb nrhiav cov pa luam yeeb tawv tawv. Kev tswj kev ua haujlwm lom neeg lom Syringaldehyde tau tshaj tawm tias yog Agrobacterium tumefaciens virulence gene inducer. Kev tshawb fawb txog cov tshuaj tua kab ntawm syringaldehyde tau ua tiav ntawm Acanthoscelides obtectus beetles[21]. Syringaldehyde pom qhov txo qis hauv kev txav mus los ntawm ntuj tsim los ntawm hnub 4 thiab ua rau muaj kev tuag tseem ceeb rau hnub 8. Kev tshawb nrhiav siv spectrophotometric tsom xam los txiav txim siab amino acids siv syringaldehyde kuj tau tshaj tawm.[22]. Ib txoj kev yooj yim thiab rhiab spectrophotometric yog tsim los rau kev txiav txim siab ntawm cov amino acids los ntawm lawv cov condensation nrog syringaldehyde. Qhov no muab ib qho kev xaiv ntxiv hauv kev txheeb xyuas cov amino acids nrog qhov zoo ntawm reagent muaj, reagent stability, thiab siv sij hawm tsawg. |
| Cov ntaub ntawv |
Vergnenegre, A. (2001). Revue des Maladies Respiratoires 18(5), 507-16. Garrote, G., et al (2004). Trends in Food Science & Technology 15, 191-200. Bortolomeazzi, R., et al (2001) Food Chemistry 100(4), 1481-1489. Rau, H.-L. (1978). Teb Chaws Asmeskas Patent 4,115,650. Xiang, Q., Lee, Y. (2001). Siv Biochemistry thiab Biotechnology 91-93(1), 71-80. Kleinert, M., and Barth, T. (2008). Zog & Roj 22, 13711379. Christiernin, M., et al (2005). Plant Physiology thiab Biochemistry 43(8), 777-785. Hacke, UG, and Sperry, JS (2001). Evolution thiab Systematics 4(2), 97-115. Boerjan, W., et al (2003). Annu Rev Plant Biol 54(1), 519-546. Fergus, BJ, et al (1970). Holzforschung 24(4), 113-117. Li, L., et al (2001) Plant Cell 13(7), 1567-1586. Creighton, RHJ, et al (1941). JACS 63(1), 312. Creighton, RHJ, et al (1941). JACS 63(11), 3049-3052. Boundagidou, OG, et al (2010). Food Research International 43(8), 2014-2019. Fillat, A., et al (2012). Carbohydrate Polymers 87(1), 146-152. Kelly, C., et al (2008). Hauv: Biotechnology for Fuels and Chemicals, Humana Press, 615-626. Camarero, S., et al (2007). Enzyme thiab Microbial Technology 40(5), 1264-1271. Singh, G., et al (2007). Enzyme thiab Microbial Technology 41, 794-799. Robinson, AL, et al (2006). Environmental Science & Technology 40(24), 7811-7819 Simoneit, BRT (2002). Siv Geochemistry 17, 129-162. Regnault-Roger, C., et al (2004). Phau ntawv Journal of Stored Products Research 40(4), 395-408. Medien, HAA (1998). " Spectrochimica Acta Part A.: Molecular thiab Biomolecular Spectroscopy, 54(2), 359-365 |
| Chemical Properties | lub teeb daj-ntsuab rau xim av crystalline hmoov |
| Chemical Properties | 4-Hydroxy-3, 5-dimethoxybenzaldehyde muaj ntxhiab tsw ntxhiab |
| Qhov tshwm sim | Tshaj tawm pom muaj nyob rau hauv pineapple, npias, cawv, txiv hmab txiv ntoo brandy, rum, ntau yam khoom lag luam whiskey, sherry, roasted barley thiab hardwood pa luam yeeb |
| Siv | Syringaldehyde yog siv nyob rau hauv cov kev tshawb fawb lom rau kev sib cais thiab cov yam ntxwv ntawm milled ntoo lignin, dioxane lignin, thiab cellulolytic lignin npaj los ntawm Brewer siv nplej. |
| Siv | Syringaldehyde tuaj yeem siv los ua tus qauv siv tshuaj ntsuam xyuas rau kev txiav txim siab ntawm cov tshuaj ntsuam xyuas hauv guacoextracts thiab kev npaj tshuaj, (1) cognacs thiab wines, (2) plum brandies, (4) thiab nplej straw (5) los ntawm ntau cov txheej txheem chromatography. |
| Kev npaj | Vanillin hloov mus rau 5-iodovanillin, uas tau kho nrog sodium methoxide los ua 4-hydroxy-3, 5- dimethyxybenzaldehyde. |
| Txhais | ChEBI: Ib hydroxybenzaldehyde uas yog 4-hydroxybenzaldehyde hloov los ntawm methoxy pawg ntawm txoj haujlwm 3 thiab 5. cais tawm ntawm Pisonia aculeata thiab Panax japonicus var. Qhov tseem ceeb, nws nthuav tawm cov haujlwm hypoglycemic. |
| Aroma pib qhov tseem ceeb | Aroma yam ntxwv ntawm 1. |
| Synthesis Reference (cov) | Canadian Journal of Chemistry, 31, p. 476 Ib., 1953DOI: 10.1139/v53-064 Synthetic Communications, 20, p. 2659 Ib., 1990DOI: 10.1080/00397919008051474 |
| Kev piav qhia dav dav | Syringaldehyde yog ib qho tshuaj tsw qab phenolic aldehyde thiab cov khoom degradation ntawm lignin. Nws nthuav tawm cov haujlwm antioxidant thiab tau tshaj tawm tias inhibit prostaglandin synthetase enzyme. Daim ntawv hluavtaws ntawm syringaldehyde yog siv rau hauv kev lag luam tshuaj, khoom noj, tshuaj pleev ib ce, textiles, pulp thiab ntawv industries. |
| Biochem/physiol Actions | Cov ntxhiab tsw ntawm 1.0% |
| Txoj Kev Purification | Crystallize syringaldehyde los ntawm tsiaj ether. [Beilstein 8 H 391, 8 IV 2718.] |
| Syringaldehyde Kev Npaj Cov Khoom Siv Thiab Cov Khoom Raw |
| Cov khoom nyoos | Hydrochloric acid-->Pyridine-->Piperidine-->3,4,5-Trimethoxybenzaldehyde |
| Cov khoom npaj | BUTYLFORMAMIDE-->3,4-Dimethoxyphenol-->Methyl vanillate-->2,6-Dimethoxyphenol-->2,6-DIMETHOXY-4-METHYLPHENOL-->Ethyl ethoxyacetate-->4-(DIFLUOROMETHOXY)-3, 5-DIMETHOXYBENZALDEHYDE |
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