Molnupiravir Capsulesyog ib qho tseem ceeb hauv kev sib ntaus sib tua thoob ntiaj teb tiv thaiv tus kabmob tshiab (SARS CoV-2) hauv xyoo tas los no. Raws li thawj qhov ncauj nucleoside analogue tshuaj tiv thaiv kab mob, nws muab cov kev kho mob yooj yim rau cov neeg mob me mus rau nruab nrab COVID-19, tshwj xeeb tshaj yog tsim rau cov xwm txheej uas tsis muaj tshuaj txhaj tshuaj los yog yuav tsum tau nyob ib leeg. Nws yog ib qho prodrug uas tau dhau ob -cov kauj ruam metabolism hauv lub cev tom qab kev tswj hwm qhov ncauj los hloov mus rau hauv daim ntawv nquag ntawm NHC-triphosphate (NHC-TP): Molnupiravir yog hydrolyzed los ntawm esterases hauv txoj hnyuv thiab ntshav mus rau nruab nrab - D-N4-hydroxycytidine (NHC). Tom qab nkag mus rau hauv lub cell, NHC yog phosphorylated los ntawm cellular kinases rau hauv NHC monophosphate thiab diphosphate, thaum kawg tsim NHC-TP. Cov qauv ntawm NHC-TP zoo ib yam li ntuj nucleoside cytidine triphosphate (CTP), thiab tuaj yeem lees paub tsis raug los ntawm tus kab mob RNA polymerase (RdRp) thiab koom ua ke rau hauv cov kab mob sib txuas RNA strand.
Nyob rau tib lub sijhawm, peb lub tuam txhab tsis yog tsuas yog muab cov hmoov ntshiab, tab sis kuj muaj cov ntsiav tshuaj thiab tshuaj txhaj. Yog tias xav tau, thov koj xav tiv tauj peb txhua lub sijhawm.
Peb cov khoom
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Molnupiravir COA
Molnupiravir yog qhov ncauj nucleoside analog tshuaj tiv thaiv kab mob, uas tau pom muaj txiaj ntsig tshwj xeeb hauv kev cuam tshuam cov kab mob tshwj xeeb (xws li kev kho mob ntawm COVID-19).Molnupiravir Capsules, raws li nws qhov ncauj ntau npaum li cas, muab cov neeg mob nrog kev xaiv kev kho mob yooj yim.
Cov khoom siv raw thiab cov khoom siv pabcuam
Main tshuaj raw khoom
Cov ntaub ntawv pib rau kev sib txuas ntawm Molnupiravir feem ntau yog qee cov organic tebchaw, xws li cov ketones, amines, thiab lwm yam. Cov ntaub ntawv pib no tau dhau los ua ntau yam kev sib txuas ntawm cov organic los maj mam tsim cov qauv molecular complex ntawm Molnupiravir. Piv txwv li, nyob rau hauv ib tug series ntawm cov tshuaj tiv thaiv, tej zaum yuav muaj cov tshuaj tiv thaiv hom xws li nucleophilic ntxiv, redox, hloov, thiab lwm yam. Txhua kauj ruam ntawm cov tshuaj tiv thaiv yuav tsum muaj meej tswj ntawm cov tshuaj tiv thaiv tej yam kev mob, nrog rau cov tshuaj tiv thaiv kub, siab, molar ratio ntawm reactants, cov tshuaj tiv thaiv lub sij hawm, thiab catalyst siv, los xyuas kom meej cov zus tau tej cov high-purity thiab siab- tawm los intermediates, thaum kawg synthesis. raw cov ntaub ntawv uas ua tau raws li cov qauv zoo.
Cov khoom siv pabcuam
Fillers: Feem ntau siv cov fillers xws li lactose, starch, thiab lwm yam. Lactose muaj fluidity zoo thiab compressibility, uas tuaj yeem muab cov ntim thiab qhov hnyav rau cov tshuaj ntsiav filling, thaum muaj kev cuam tshuam me ntsis ntawm kev ruaj ntseg ntawm cov tshuaj. Cov hmoov txhuv nplej siab kuj yog ib qho khoom siv dav siv, uas tsis yog tsuas yog ua kom lub ntim ntawm cov tshuaj ntsiav, tab sis kuj muaj qee yam cuam tshuam, uas pab tso cov tshuaj hauv lub cev.
Lubricants: xws li magnesium stearate. Nyob rau hauv tus txheej txheem ntawm kev npaj tshuaj ntsiav, lub luag hauj lwm ntawm lubricants yog los txo cov kev sib txhuam ntawm cov khoom thiab cov khoom, tiv thaiv cov khoom los ntawm adhering rau cov khoom, xyuas kom meej lub smooth filling ntawm capsules, thiab ua kom lub luj sib txawv ntawm cov tshuaj ntsiav raws li cov kev cai.
Tshuaj tua kab mob: xws li carboxymethyl starch sodium (CMS Na). Cov tshuaj tua kab mob tuaj yeem nqus dej sai sai thiab nthuav dav tom qab cov tshuaj ntsiav nkag mus rau hauv lub cev, ua rau lub plhaub capsule tawg thiab txhawb kev tawg sai sai thiab tawg ntawm cov tshuaj, yog li txhim kho bioavailability ntawm cov tshuaj.
Cov txheej txheem ntau lawm ntws
Kev npaj cov khoom xyaw tshuaj nquag
Teb cov kauj ruam
Kauj Ruam 1 Cov tshuaj tiv thaiv: Cov khoom pib tshwj xeeb A thiab B tau maj mam ntxiv rau cov khoom siv hluav taws xob (xws li boron trifluoride ether complex) hauv cov kuab tshuaj organic (xws li dichloromethane) nyob rau hauv qis kub (xws li 0-5 degree) cov xwm txheej rau nucleophilic ntxiv cov tshuaj tiv thaiv. Nruam stirring yog yuav tsum tau thaum lub sij hawm cov txheej txheem tshuaj tiv thaiv kom meej meej sib tov ntawm cov reactants. Tom qab cov tshuaj tiv thaiv ua tiav, qhov nruab nrab C yog sib cais los ntawm kev rho tawm, ntxuav, ziab, thiab lwm yam haujlwm.
Kauj Ruam 2 Cov tshuaj tiv thaiv: Intermediate C tau txais cov tshuaj tiv thaiv hydrolysis nyob rau hauv alkaline tej yam kev mob (xws li siv sodium hydroxide tov) los tsim nruab nrab D. Cov tshuaj tiv thaiv hydrolysis yuav tsum tau nqa tawm ntawm qhov ntsuas kub (xws li 50-60 degree) rau qee lub sijhawm (xws li 2-3 teev) kom tiav cov tshuaj tiv thaiv. Tom qab cov tshuaj tiv thaiv tiav, purified intermediate D yog tau los ntawm acidification, crystallization, thiab lwm yam kev khiav hauj lwm.
Cov tshuaj tiv thaiv tom qab: Intermediate D tau dhau los ua cov oxidation, txo qis, hloov pauv thiab lwm yam kev cuam tshuam, maj mam hloov mus rau hauv Molnupiravir. Txhua kauj ruam cov tshuaj tiv thaiv yuav tsum muaj kev tswj xyuas nruj ntawm cov tshuaj tiv thaiv thiab kev ntsuas zoo ntawm cov neeg nruab nrab kom ntseeg tau tias lawv ua tau raws li qhov yuav tsum tau ua ntawm cov kauj ruam tom ntej.
Purification thiab refinement
Molnupiravir nyoos hmoov tau txais los ntawm ntau yam tshuaj tiv thaiv yuav tsum tau ua kom huv thiab ua kom zoo los ntawm txoj kev xws li crystallization, recrystallization, thiab chromatographic sib cais. Piv txwv li, thaum siv cov txheej txheem recrystallization, cov kuab tshuaj tsim nyog (xws li ethanol dej sib xyaw cov kuab tshuaj) raug xaiv, thiab cov crystallization kub thiab tus nqi raug tswj kom tau siab -purity Molnupiravir crystals. Cov purified Molnupiravir yuav tsum tau kho kom qhuav kom tshem tawm cov kuab tshuaj seem thiab cov dej noo, thiab tau txais cov khoom siv raw uas ua tau raws li cov qauv zoo.
Kev npaj cov formulations
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Crushing thiab sieving
Sib tsoo Molnupiravir raw cov ntaub ntawv thiab ntau yam excipients cais kom tau raws li qhov xav tau qhov loj me. Tom qab ntawd, cov sieve los ntawm ib lub sieve uas tsim nyog (xws li 80-100 mesh) kom tshem tawm cov khoom uas loj dhau los yog me me, kom ntseeg tau qhov sib xws ntawm cov khoom.
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Sib tov
Ntxiv cov khoom siv tshuaj ntsuam xyuas thiab cov khoom ntxiv rau hauv lub tshuab tov khoom hauv ib qho kev faib ua feem rau kev sib tov. Thaum lub sij hawm sib tov, nws yog ib qho tsim nyog los tswj lub sij hawm sib tov thiab sib tov ceev kom ntseeg tau tias cov tshuaj thiab cov khoom siv ntxiv yog sib xyaw ua ke, ua rau cov hmoov sib tov sib xyaw.
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Granulation (yeem)
Qee qhov xwm txheej, kev ua haujlwm granulation tuaj yeem ua rau ntawm cov hmoov sib tov los txhim kho lawv cov flowability thiab compressibility. Txoj kev granulation tuaj yeem ntub granulation lossis qhuav granulation. Kev ntub dej granulation yog txheej txheem ntawm kev sib xyaw cov hmoov sib xyaw nrog qhov tsim nyog ntawm binder (xws li cov tshuaj aqueous ntawm polyvinylpyrrolidone K30) los tsim cov khoom ntub dej, uas tom qab ntawd qhuav siv lub tshuab ziab khaub ncaws (xws li lub tshuab ziab khaub ncaws) kom tshem tawm cov dej noo thiab kom tau cov khoom qhuav. Qhuav granulation yog cov txheej txheem ntawm ncaj qha compressing cov hmoov sib tov rau hauv cov khoom loj nyob rau hauv siab, thiab ces crushing lawv mus rau hauv haum hais.
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Qhuav (yog tias granulation)
Rau ntub pellets tau los ntawm ntub granulation, kev kho kom qhuav yog xav tau. Kev ziab kom qhuav thiab lub sij hawm ziab yuav tsum tau tswj kom meej raws li cov khoom ntawm cov khoom thiab cov yam ntxwv ntawm cov binder los tiv thaiv overheating, deterioration, los yog tsis txaus ziab ntawm cov khoom. Kev ziab khaub ncaws dav dav yog tswj ntawm 50-70 degree, thiab lub sijhawm ziab yog nyob ntawm qhov loj thiab noo noo cov ntsiab lus, feem ntau 2-4 teev.
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Tag nrho cov nplej thiab tag nrho sib tov
Tom qab ziab, tej zaum yuav muaj ib co clumps los yog oversized hais, uas yuav tsum tau tag nrho cov nplej ua hauj lwm kom lawv cov particle loj sib xws. Tom qab ntawd sib tov tag nrho cov khoom nrog cov roj nplua nyeem thiab lwm cov khoom xyaw ntxiv rau tag nrho kev sib xyaw kom ntseeg tau tias muaj kev faib tawm ntawm ntau yam khoom.
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Capsule filling
Sau cov khoom sib xyaw ua ke rau hauv hollow capsules los ntawm lub tshuab capsule filling tshuab. Thaum lub sij hawm lub capsule filling txheej txheem, nws yog ib qho tsim nyog yuav tsum nruj me ntsis tswj lub filling qhov hnyav kom ntseeg tau tias cov ntsiab lus ntawm txhua lub tshuaj ntsiav ua tau raws li qhov yuav tsum tau ua. Nyob rau tib lub sijhawm, kev saib xyuas yuav tsum tau them rau kev sib khi ntawm cov tshuaj ntsiav kom tiv thaiv cov tshuaj to.
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Ntim
Ntim cov tshuaj ntsiav ntim, feem ntau yog siv txhuas- ntim cov hnab yas lossis lub raj mis ntim. Cov khoom ntim yuav tsum muaj cov khoom thaiv zoo uas tuaj yeem tiv thaiv cov tshuaj los ntawm kev cuam tshuam los ntawm cov yam ntxwv xws li ya raws, oxidation, thiab lub teeb raug, ua kom ruaj khov ntawm cov tshuaj zoo.
Kev tswj kom zoo
Cov yam ntxwv: suav nrog cov tsos, xim, tsw, thiab lwm yam Molnupiravir API yuav tsum yog cov hmoov dawb los yog tawm dawb crystalline hmoov, tsis muaj ntxhiab lossis yuav luag tsis muaj ntxhiab.
Kev txheeb xyuas: Infrared spectroscopy, siab -kev ua haujlwm ua kua chromatography, thiab lwm txoj hauv kev yog siv los txheeb xyuas cov khoom siv tshuaj, kom ntseeg tau tias nws cov qauv tshuaj muaj xws li Molnupiravir.
Kev soj ntsuam huv huv: Txiav txim siab cov ntsiab lus ntawm cov khoom muaj feem xyuam hauv cov khoom siv raw los ntawm siab -kev ua tau zoo ntawm cov kua chromatography los tswj cov kev txwv impurity. Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog los xyuas cov impurities xws li cov hlau hnyav thiab cov kuab tshuaj seem kom ntseeg tau tias lawv ua tau raws li cov qauv zoo.
Kev txiav txim siab txog cov ntsiab lus: Kev ua haujlwm siab ua kua chromatography lossis lwm txoj hauv kev tsim nyog yog siv los txiav txim siab cov ntsiab lus ntawm Molnupiravir hauv cov khoom siv tshuaj, kom ntseeg tau tias cov ntsiab lus nyob rau hauv qhov kev teev tseg.
Kev tswj kom zoo ntawm cov formulations
Qhov tsos:Molnupiravir ntsiav tshuajyuav tsum muaj qhov ua tiav thiab huv si, tsis muaj kev puas tsuaj lossis tsis muaj xim rau lub plhaub capsule.
Kev txheeb xyuas: Zoo ib yam li kev txheeb xyuas cov khoom xyaw tshuaj, siv cov txheej txheem tsim nyog los txheeb xyuas Molnupiravir hauv kev tsim.
Cov ntsiab lus tsis sib xws: Rau qhov qis - cov qauv tshuaj noj, nws yuav tsum tau kuaj xyuas cov ntsiab lus sib xws kom ntseeg tau tias qhov sib txawv ntawm cov ntsiab lus ntawm cov tshuaj nyob rau hauv txhua lub tshuaj ntsiav yog nyob rau hauv qhov kev teev tseg.
Dissolution: Dissolution yog qhov taw qhia tseem ceeb rau kev ntsuas qhov ceev thiab qib ntawm cov tshuaj tso tawm los ntawm kev tsim. Los ntawm kev simulating ib puag ncig sab hauv, ntsuas tus nqi tawg ntawmMolnupiravir ntsiav tshuajnyob rau hauv ib lub sij hawm teev los xyuas kom meej sai thiab zoo tso tshuaj.
Kev txwv microbial: Tshawb xyuas cov kab mob microbial hauv cov qauv, suav nrog cov kab mob, pwm, cov poov xab, thiab lwm yam, kom ua raws li cov qauv txwv microbial thiab xyuas kom muaj kev nyab xeeb ntawm cov tshuaj.
Metabolic transformation thiab active daim ntawv
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Molnupiravir Capsulesyog ribonucleoside analog prodrug. Cov txheej txheem metabolic hloov pauv thiab daim ntawv nquag ntawm cov tshuaj no ua lub luag haujlwm tseem ceeb hauv cov tshuaj tiv thaiv kab mob.
Cov txheej txheem metabolic hloov pauv: Molnupiravir, raws li 5'- isobutyrate prodrug, yuav tsum muaj ob theem metabolic hauv lub cev tom qab kev tswj hwm qhov ncauj los ua haujlwm. Ua ntej, hauv cov hnyuv thiab daim siab, carboxylic acid esterase sai sai hydrolyzes ester daim ntawv cog lus ntawm Molnupiravir, tsim cov tshuaj niam txiv -D-N4-hydroxycytidine (NHC). Qhov kev hloov pauv no ua rau muaj txiaj ntsig zoo ntawm qhov ncauj bioavailability ntawm cov tshuaj, tso cai rau NHC nkag mus rau hauv lub cev. Tom qab ntawd, NHC tau coj los ntawm cov hlwb thiab muab faib rau cov hlwb, qhov uas nws ntxiv phosphorylated los ntawm kinase, thaum kawg tsim cov tshuaj pharmacologically active triphosphate nucleotide daim ntawv - NHC-TP.
Daim ntawv nquag thiab cov txheej txheem ntawm kev ua: NHC-TP yog cov khoom xyaw tseem ceeb ntawm Molnupiravir uas ua rau nws cov tshuaj tiv thaiv kab mob. Nws cov txheej txheem ntawm kev ua yog raws li "tus kab mob yuam kev kev puas tsuaj" txoj kev xav: Thaum lub sij hawm tus kab mob RNA replication txheej txheem, NHC-TP, raws li ib tug substrate, yog yuam kev lees paub los ntawm tus kab mob RNA- nyob ntawm RNA polymerase (RdRp) thiab muab tso rau hauv cov tshiab synthesized viral RNA strand. Vim tias muaj ob hom kev hloov pauv ntawm NHC (Imino-M thiab Amino-M), lawv tuaj yeem ua raws li kev simulate uracil (U) lossis cytosine (C), ua tsis yog- qauv piv nrog adenine (A) lossis guanine (G). Qhov kev sib koom ua ke yuam kev no ua rau muaj kev sib txuam ntawm ntau qhov kev hloov pauv (xws li A / G hloov pauv) hauv cov khoom lag luam RNA. Thaum tus naj npawb ntawm kev hloov pauv ntau dua tus kab mob qhov kev zam txim, tus kab mob genome poob nws txoj haujlwm thiab tsis tuaj yeem ua tiav lub voj voog rov ua dua, yog li raug tshem tawm.
Cov yam ntxwv ntawm metabolic kinetics: Cov metabolism thiab hloov pauv ntawm Molnupiravir yog cov txiaj ntsig zoo thiab tsom. Tom qab kev tswj hwm qhov ncauj, qhov concentration ntawm NHC hauv plasma nce mus txog qhov siab tshaj plaws (lub sijhawm nruab nrab Tmax yog kwv yees li 1.5 teev), thiab nws qhov raug (AUC) thiab qhov siab tshaj plaws concentration (Cmax) nce proportionally nrog cov koob tshuaj. Qhov ua tau zoo ib nrab -NHC lub neej yog kwv yees li 3.3 teev, txhawb nqa ib zaug - lub sijhawm tswj hwm txhua hnub txhua 12 teev. Nws yog ib qho tseem ceeb uas cov txheej txheem metabolic ntawm NHC zoo ib yam li cov pyrimidine endogenous, thaum kawg metabolizing rau hauv uridine los yog cytidine, thiab ob qho tib si NHC thiab Molnupiravir tsis yog substrates los yog inhibitors ntawm cov tshuaj loj -metabolizing enzymes (xws li CYP450) los yog cov kev pheej hmoo ntawm kev thauj mus los.
Qhov tseem ceeb ntawm kev kho mob: Molnupiravir muaj kev xaiv kho qhov ncauj rau COVID-19 los ntawm nws qhov tshwj xeeb hloov pauv metabolic thiab daim ntawv nquag. Nws qhov dav-spectrum tshuaj tiv thaiv kab mob tiv thaiv kab mob RNA (xws li kev ua tau zoo ntawm Omicron variant) thiab txoj kev tswj hwm yooj yim (tsis muaj kev txhaj tshuaj lossis cov cuab yeej siv nyuaj) ua rau nws muaj txiaj ntsig tseem ceeb hauv cov neeg tsis muaj tshuaj tiv thaiv lossis nrog kev cuam tshuam ntawm lub cev tsis muaj zog.
FAQ
1. Puas yog qhov kev hloov pauv induction muaj kev cuam tshuam rau mitochondrial DNA ntawm cov tswv tsev cell?
Raws li txoj cai, cov khoom nquag (NHC-TP) tuaj yeem siv los ntawm mitochondrial DNA polymerase . Txawm li cas los xij, tsis muaj qhov tseem ceeb mitochondrial toxicity tau pom nyob rau hauv cov kev tshawb fawb hauv vitro tam sim no, thiab xav tau cov ntaub ntawv ntau ntxiv los txiav txim siab ntev - lub sij hawm muaj feem cuam tshuam.
2. Tom qab tshem tawm tus kab mob no lawm, puas yuav ua rau cov kab mob sib kis puas tuaj yeem koom ua ke lossis koom nrog cov txheej txheem ntawm tes?
Qhov yuam kev hauv cov khub hauv paus uas nws ua rau lub sijhawm tus kab mob RNA tsim tawm tsuas yog muaj nyob rau hauv luv luv - nyob tus kab mob genome thiab tsis tuaj yeem koom ua ke rau hauv tus tswv tsev DNA. Kuj tsis muaj pov thawj qhia tias nws cov khoom yuav cuam tshuam nrog kev hloov pauv thiab kev txhais lus ntawm cov hlwb li qub.
3. Lub luag haujlwm ntawm cov kab mob symbiotic hauv plab microbiota yog dab tsi?
Raws li qhov dav -spectrum mutagen, nws yog qhov theoretically muaj peev xwm cuam tshuam rau cov kab mob hauv plab hnyuv uas nqa cov kab mob RNA. Txawm li cas los xij, tam sim no, tsis muaj cov kev tshawb fawb cuam tshuam, thiab qhov ntev - cuam tshuam rau qhov sib npaug ntawm txoj hnyuv microecology tseem tsis paub.
Cim npe nrov: molnupiravir capsules, lwm tus neeg, manufacturers, hoobkas, lag luam wholesale, yuav, nqe, tej, kev muag khoom