SK280115B6 - Kyselina 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-met - Google Patents
Kyselina 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-met Download PDFInfo
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Description
Je opísaná 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová kyselina vzorca (I) a jej solí v základnej a izomémej forme, spôsob jej výroby, medziprodukt tohto spôsobu všeobecného vzorca (IV), farmaceutický prostriedok s jej obsahom a jej použitie ako liečiva, najmä na znižovanie obsahu cholesterolu v krvi.
SK 280115 Β6
Oblasť techniky
Vynález sa týka kyseliny 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énovej, spôsobu jej výroby, farmaceutického výrobku túto látku obsahujúceho a medziproduktu najej výrobu.
Doterajší stav techniky
Je známe, že laktónové deriváty izolované z kultúr plesní sú inhibítormi 3-hydroxy-3-metyl-glutaryl koenzým A reduktázy (HMG-CoA-reduktáza) (Mevinolin, EP 22472, US4 231 938).
Okrem toho je známe, že pyridín-substituované dihydroxyhepténové kyseliny sú inhibítormi HMG-CoA-reduktázy (EP 325 130, EP 307 342, EP 306 929).
Podstata vynálezu
COOH
V súčasnosti sa zistilo, že kyselina 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová všeobecného vzorca (I)
COOH (I) a jej soli, prípadne v izomémej forme, majú silnejší inhibičný účinok na HMG-CoA-reduktázu, a tak spôsobujú prekvapujúco dobré zníženie obsahu cholesterolu v krvi.
Kyselina 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová môže byť vo forme svojich solí. Všeobecne ide o soli s organickými alebo anorganickými bázami. V rozsahu predloženého vynálezu sú výhodné fyziologicky prijateľné soli. Fyziologicky prijateľnými soľami kyseliny 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énovej podľa vynálezu môžu byť kovové alebo amóniove soli. Výhodné sú soli sodné, draselné, horečnaté alebo vápenaté, ako i amóniove soli, odvodené od amoniaku alebo organických amínov, ako je napríklad metylamín, etylamín, propylamín, izopropylamin, di- prípadne trietylamin, díizopropylamín, di-, prípadne trietanolamín, dicyklohexylamín, arginín, lyzín alebo etyléndiamín. Obzvlášť výhodné sú soli sodné a draselné.
7-[4-(4-Fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová kyselina podľa vynálezu, ako i jej soli majú dva asymetrické uhlíkové atómy, najmä obidva atómy uhlíka, na ktoré sú viazané hydroxyskupiny a môžu preto existovať v rôznych stereochemických formách. Vynález zahrnuje jednotlivé izoméry a tak tiež ich zmesi. Látky podľa vynálezu sa tak môžu podľa relatívneho postavenia hydroxyskupín vyskytovať v erytroalebo v treo-konfígurácii:
treo - forma
Výhodná je erytro-konfigurácia.
Od zlúčeniny tak v treo-, ako tiež v erytro-konfigurácii existujú vždy dva enantioméry, najmä 3R,5S-izoméry, prípadne 3S,5R-izoméry (erytro-forma), ako i 3R,5R-izoméry a 3S,5S-izoméry (treoforma). Výhodné sú 3R,5S/3S,5R-racemát, ako i 3R,5S-enantiomér.
Vzhľadom na dvojitú väzbu môžu zlúčeniny podľa vynálezu existovať v E-konfigurácii alebo Z-konfigurácii. Výhodné sú tie zlúčeniny, ktoré sú v E-konfigurácii.
Obzvlášť výhodné sú (+)-enantioméry substituované pyridyl-dihydroxy-hepténovej kyseliny v erytro-(E)-konfigurácii a taktiež ich solí.
7-[4-(4-Fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová kyselina všeobecného vzorca (I)
COOH (I) ako i jej soli, prípadne v izomémej forme, sa pripraví, keď sa
A) v prípade raccmických produktov hydrolyzuje zodpovedajúci racemický ester všeobecného vzorca (II)
COOR5 (II), v ktorom
R1 znamená C|-C4-alkyl alebo benzyl, alebo
B) v prípade stereoizoméme jednotných produktov sa najprv racemické estery všeobecného vzorca (II) prevedú pôsobením (+)- alebo (-)-enantiomérov amínu všeobecného
kde
R2 prípadne hydroxylom substituovaný Q-C^alkyl a
R3 znamená vodík, halogén, CrC4-alkyl alebo CrC4-alkoxy, na zodpovedajúce diastereoméme amidy všeobecného vzorca (IV)
R3 (IV) zmes diastereomémych amidov sa rozdelí chromatografícky alebo kryštalizáciou na jednotlivé diastereoméry, a nakoniec sa čisté diastereoméme amidy hydrolyzujú na enantioméme čisté produkty.
Spôsob môže byť napríklad znázornený nasledujúcou schémou:
COOCH,
Ricemit
(*>Enántiomér (ý-Enantíomcr
Hydrolýza esteru vzorca (II) sa všeobecne vykonáva tak, že sa ester spracuje bázou v inertnom rozpúšťadle, pričom všeobecne najprv vznikne soľ, ktorá sa nakoniec v druhom stopni spracovaním s kyselinou prevedie na voľnú kyselinu všeobecného vzorca (I).
Ako rozpúšťadlá sú na hydrolýzu esterov vhodné voda alebo na zmydelnenie esterov bežné organické rozpúšťadlá. Medzi ne patria výhodne alkoholy, ako je metanol, etanol, propanol, izopropanol alebo butanol alebo étery ako tetrahydrofurán alebo dioxán alebo dimetylformamid alebo dimetylsulfoxid. Obzvlášť výhodné sú alkoholy ako metanol, propanol alebo izopropanol. Je rovnako možné používať zmesi uvedených rozpúšťadiel.
Ako báza na hydrolýzu esterov sú vhodné bežné anorganické bázy. K nim výhodne patria hydroxidy alkalických kovov alebo hydroxidy kovov alkalických zemín, ako je napríklad hydroxid sodný, hydroxid draselný alebo hydroxid bámatý alebo uhličitany alkalických kovov, ako je uhličitan sodný alebo draselný alebo hydrogenuhličitan sodný alebo alkoholáty alkalických kovov, ako je metanolát sodný, etanolát sodný, metanolát draselný, etanolát draselný alebo tere.-butanolát draselný. Ako obzvlášť výhodné sa používajú hydroxid sodný alebo hydroxid draselný.
Hydrolýza esteru sa všeobecne vykonáva v teplotnom rozsahu od -10 °C do +100 °C, výhodne od +20 °C do +80 °C.
Všeobecne sa hydrolýza esteru vykonáva za normálneho tlaku. Je ale tiež možné pracovať za zníženého tlaku alebo za pretlaku (napr. od 0,5 až 5.105 Pa).
Pri vykonávaní hydrolýzy sa všeobecne báza používa v množstve od 1 do 3 mol, výhodne 1 až 5 mol, vzťahujúc na 1 mol esteru. Obzvlášť výhodne sa používajú molárne množstvá reaktantov. Pri vykonávaní hydrolýzy vznikajú v prvom stupni soli kyseliny podľa vynálezu, ktoré môžu byť izolované. Kyselina podľa vynálezu sa získa spracovaním soli s bežnými anorganickými kyselinami. K tým patrí výhodne minerálna kyselina ako napríklad kyselina chlorovodíková, kyselina bromovodíková, kyselina sírová alebo kyselina fosforečná. Ako výhodné sa pri výrobe karboxylovej kyseliny preukázalo okyslenie bázickej zmesi po hydrolýze bez izolácie soli v druhom stupni.
Reakcia esteru vzorca (II) s enantiomémymi amínmi vzorca (III) na diastereoméme amidy vzorca (IV) sa všeobecne vykonáva v inertných rozpúšťadlách.
Ako rozpúšťadlá sú vhodné bežné organické rozpúšťadlá používané na amidáciu. Hlavne k nim patria étery ako dietyléter, dioxán alebo tetrahydrofurán alebo chlórované uhľovodíky ako metylénchlorid alebo chloroform alebo dimetylformamid. Obzvlášť výhodne sa používa zodpovedajúci amín vzorca (III) v prebytku, prípadne s tetrahydrofuránom alebo dioxánom ako rozpúšťadlom.
Reakcia sa výhodne vykonáva v rozmedzí +20 °C až +80 °C, všeobecne v teplotnom rozsahu od 0 °C do 100 °C.
Reakcia sa všeobecne vykonáva za normálneho tlaku, je však tiež možné pracovať za zníženého alebo zvýšeného tlaku.
Pri reakcii sa ako výhodné preukázalo použiť amín priamo ako rozpúšťadlo vo veľmi veľkom prebytku alebo pri použití ďalšieho rozpúšťadla v až 10-násobnom prebytku.
Hydrolýza diastereomémych amidov vzorca (IV) sa vykonáva bežnými metódami, napríklad spracovaním amidu bázami alebo kyselinami v inertných rozpúšťadlách.
Ako inertné rozpúšťadlá sú vhodné voda a/alebo organické rozpúšťadlá. Ako organické rozpúšťadlá sú obzvlášť vhodné alkoholy, ako je metanol, etanol, propanol alebo izopropanol alebo éter ako dietyléter, dioxán alebo tetrahydrofurán. Obzvlášť výhodné sú voda alebo zmesi voda/alkohol.
Ako kyseliny sú na hydrolýzu amidov vhodné bežné anorganické alebo organické kyseliny. Výhodné sú kyselina chlorovodíková, kyselina bromovodíková, kyselina sírová, ako i kyselina metánsulfónová alebo toluénsulfónová.
Ako bázy sú na hydrolýzu amidov vhodné bežné anorganické bázy, ako je hydroxid sodný alebo draselný alebo metanolát sodný alebo draselný alebo etanolát sodný alebo draselný alebo uhličitan sodný alebo draselný.
Výhodne sa hydrolýza amidov v prípade fenetylamidu vykonáva v etanolickej kyseline chlorovodíkovej a v prípade fenylglycinolamidu v hydroxide sodnom, prípadne za prítomnosti alkoholu.
Hydrolýza diastereomémych amidov vzorca (IV) sa všeobecne vykonáva v teplotnom rozmedzí od 0 °C do 150 °C, výhodne od +20 °C do +100 °C.
Hydrolýza amidov sa všeobecne vykonáva za normálneho tlaku, môže ale tiež byť vykonávaná za tlaku zníženého alebo zvýšeného.
Je tiež možné vyrobiť enantioméme čisté soli vzorca (I) tak, že sa zodpovedajúci racemát robí bežnými spôsobmi, používanými v chromatografii.
Východiskové látky amíny vzorca (III) sú známe alebo môžu byť pripravené známymi metódami. Výhodne sa pri reakcii podľa vynálezu používajú amíny vzorca III, v ktorom R3 znamená vodík a R2 znamená metyl alebo hydroxymetyl.
Diastereoméme amidy vzorca (IV) sú nové. Sú cennými medziproduktmi pri výrobe enantioméme čistej substituovanej pyridyl-dihydroxy-hepténovej kyseliny a jej solí.
Substituovaná pyridyl-dihydroxy-hepténová kyselina podľa vynálezu, jej soli, ako i izomérne formy majú cenné, v porovnaní so stavom techniky, farmakologické vlastnosti, obzvlášť sú vysoko účinnými inhibítormi 3-hydroxy-3-metyl-glutaryl koenzým A (HGM-CoA) reduktázy a v dôsledku toho inhibítormi biosyntézy cholesterolu. Môžu sa preto teda použiť na liečenie hyperlipoproteinémie. Účinné látky podľa vynálezu okrem toho spôsobujú pokles hladiny cholesterolu v krvi.
Farmakologická účinnosť zlúčenín podľa vynálezu bola stanovená nasledujúcimi testami:
A) Stanovenie enzymatickej aktivity bolo vykonané modifikovaným postupom podľa G. C. Nessa a spol., Archives of Biochemistry and Biophysics 197, 493 - 499 (1979). Samci Rico krýs (tel. hmotnosť 300 až 400 g) boli kŕmení 11 dní práškovitou potravou Altromin, ku ktorej bolo pridaných 40 g cholesterylamínu/kg potravy. Po dekapitácii bola zvieratám vybraná pečeň a uložená do ľadu. Pečeň bola rozdrvená a homogenizovaná trikrát v Potter - Elvejovom homogenizátore v 3 objemoch 0,1 M sacharózy, 0,05 M KC1, 0,04 M KxHy - fosfátu (zmes K2HPO4 a KH2PO4 s pH 7), 0,03 M kyseliny etyléndiamíntetraoctovej, 0,002 M ditiotreit (SPE)-pufra (pufor sacharóza - fosfát - kyselina EDTA) pH 7,2. Potom bola odstreďovaná 15 minút a sediment bol odložený. Supematant bol sedimentovaný 75 minút pri 1 000 000 g. Peleta bola vybraná do 5-násobku svojho objemu SPE pufra, homogenizovaná a zmrazená pri -78 °C a skladovaná (roztok enzýmu).
Testovali sa zlúčeniny (prípadne Mevinolin ako referenčná látka) rozpustené v DMF za prídavku 5 % obj. 1 N NaOH a použité po 10 μΐ v rôznych koncentráciách v enzýmovom teste. Test je naštartovaný po 20 - minútovej predchádzajúcej inkubácii zlúčenín s enzýmom pri 37 °C. Na test bolo použitých 0,380 ml, obsahujúcich 4 pmol glukóza-6-fosfátu, 1,1 mg hovädzieho sérového albumínu, 2,1 pmol ditiotreitu, 0,35 pmol NADP (beta-nikotínamid-adenín-dinukleotid-fosfát), 1 jednotku glukóza-6-fosfátdehydrogenázy, 35 pmol KxHy-fosfátu pH 7,2, 20 μΐ enzýmového prípravku a 56 mmol 3-hydroxy-3-metyl-glutaryl koenzýmu A (glutaryl-3-14C) 100 000 dpm.
Inkubuje sa 60 minút pri 37 °C a reakcia sa skončí prídavkom 300 μΐ 0,25 M HC1. Po ďalšej inkubácii 60 minút pri 37 °C sa násada odstredí a 600 μΐ supernatantu sa nanesie na kolónu 0,7 x 4 cm, plnenú 5-chlorid aniónovýmennou živicou s veľkosťou zrna 0,074 až 0,147 mm. Potom sa premyje 2 ml destilovanej vody a eluuje premývacou vodou s 3 ml scintilačnej kvapaliny a spočíta sa v scintilačnom čítači. IC50-hodnoty sa stanovia vynesením percentuálneho zníženia proti koncentrácii zlúčeniny v teste a intrapoláciou. Na stanovenie relatívnej inhibičnej schopnosti sa hodnota IC50 referenčnej substancie mevinolínu hodnotí ako 100 a porovnáva sa so súčasne stanovenou hodnotou IC50 testovanej zlúčeniny
Porovnanie relatívnej aktivity zlúčeniny podľa príkladu 1 s mevinolínom ako referenčnou látkou podľa testovacej metódy A/je uvedené v nasledujúcej tabuľke.
Tabuľka
zlúčenina | relatívna aktivita | |
mevinolin | 1 - | |
F | 1 | |
ιϊ | OH <?H ϊ I jCOO’Na* | |
|| | 14 0 | |
^ο'Λ''γ'Ύ | ||
1 |
B) Pôsobenie zníženia sérového cholesterolu zlúčeninami podľa vynálezu na krvnú hladinu cholesterolu u psov sa zisťovalo viactýždennými pokusmi s potravou. Na tento účel boli skúšané substancie podávané v priebehu viacerých týždňov raz denne vo forme kapsuly zdravým psom plemena beagle spolu s potravou p.o. K potrave bol počas celého obdobia pokusu, t. j. pred, počas a po aplikačnej perióde skúšanej substancie primiešavaný colestyramín (4 g/100 g potravy 9 ako sekvestrant žlčových kyselín). Dvakrát týždenne bola psom odoberaná venózna krv a enzymaticky bol stanovený obsah cholesterolu obchodne dostupným gitom na test. Hodnoty sérového cholesterolu počas aplikačnej periódy boli porovnávané s hodnotami sérového cholesterolu pred aplikačnou periódou (kontrola).
K predloženému vynálezu patria tiež farmaceutické prípravky, ktoré obsahujú okrem inertných, netoxických, farmaceutický vhodných pomocných a nosných látok jednu alebo viacero zlúčenín všeobecného vzorca (I) alebo sú tvorené jednou alebo viacerými účinnými látkami vzorca (I), ako i spôsoby prípravy týchto prípravkov.
Účinné látky vzorca (I) sú v týchto prípravkoch v koncentrácii od 0,1 do 99,5 % hmotn., výhodne od 0,5 do 95 % hmotn. vztiahnuté na celkovú zmes.
Okrem účinných látok vzorca (I) môžu farmaceutické prípravky obsahovať tiež ďalšie farmaceutický vhodné účinné látky.
Uvedené farmaceutické prípravky môžu byť vyrobené bežným spôsobom známymi metódami, napríklad s pomocnou alebo nosičovou látkou (látkami).
Všeobecne sa ako vhodné prejavilo kvôli dosiahnutiu požadovaných výsledkov podávanie účinnej látky (látok) vzorca (I) v celkovom množstve od asi 0,1 pg/kg do asi 100 pg/kg, výhodne v celkovom množstve od asi 1 pg/kg do 50 pg/kg telesnej hmotnosti počas 24 hodín, prípadne vo forme viacerých jednotlivých dávok.
Uvedené množstvá sa môžu vhodne upraviť, a to v závislosti od druhu a telesnej hmotnosti ošetrovaného objektu, individuálnej odozvy na liek, druh a závažnosť ocho
SK 280115 Β6 renia, druhu prípravku a aplikácie, ako i prípadne intervalu, v ktorom sa podávanie realizuje.
Nasledujúce príklady slúžia na ilustráciu vynálezu a v žiadnom prípade ho neobmedzujú.
Príklady uskutočnenia vynálezu
Príklad 1
3R,5S-(+)-Nátrium-erytro-(E)-7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-enoát
Príklad 2
3S,5R-(-)-Nátrium-erytro-(E)-7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-enoát
Variant A spôsobu - delenie R-(+)-fenyletylamínom
a) Výroba a delenie diastereomérnych fenetylamidov
4,7 g (10 mmol) metyl-erytro-(E)-4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-enoátu sa rozpustí v 20 ml R-(+)-fenetylamínu a zahrieva 72 hodín na 40 °C. Reakčný roztok sa naleje do 150 ml vody a pH roztoku sa nastaví na 4 IN kyselinou chlorovodíkovou. Potom sa niekoľkokrát extrahuje éterom. Spojené organické extrakty sa premyjú nasýteným roztokom chloridu sodného, sušia sa nad síranom horečnatým a odparia sa. Po predčistení cez silikagél 63 - 200 pm (elučné činidlo octan/petroléter 4/6 -> 6/4) sa delí na 15 pm - hotovej kolóne (elučné činidlo octan/petroléter 1/1).
Výťažok: 2,1 g diastereoméru Al (37,4 % teor.)
1,5 g diastereoméru B1 (26,6 % teor.)
b) Výroba enantioméme čistej sodnej soli (pr. 1/2)
2,1 g (3,7 mmol) diastereoméru Al sa rozpustí v 70 ml 15 % etanolu a po prídavku 13 ml IN kyseliny chlorovodíkovej sa zahrieva 48 hodín pod refluxom. Po ochladení sa supematant odfiltruje a zvyšok sa viackrát rozmieša s etanolom. Spojené etanolové roztoky sa odparia a zvyšok sa vyberie do 50 ml vody a 50 ml dichlórmetánu. pH roztok sa upraví na 3,5 IN kyselinou chlorovodíkovou a roztok sa potom viackrát extrahuje dichlórmetánom. Spojené organické roztoky sa sušia nad síranom sodným a odparia sa. Zvyšok sa vyberie do 50 ml tetrahydrofuránu/vody 1/1 a pH sa nastaví na hodnotu 7,5 IN hydroxidom sodným. Tetrahydrofurán sa odparí na rotačnej odparke a zvyšný vodný roztok sa lyofilizuje. Surový lyofilizát sa prečistí cez RP 18 (elučné činidlo: acetonitril : voda 30/70). Po vymrazení frakcií obsahujúcich produkt sa získa 8,50 mg (48 % teória) (+)-enantiomémej sodnej soli (pr. 1).
'H-NMR (DMSO-d6): delta (ppm) = 1,0 (m, 1H), 1,23 (d, 6H), 1,28 (d, 6H), 1,3 (m, 1H), 1,75 (dd, 1H), 1,98 (dd, 1H), 3,07 (s, 3H), 3,2 - 3,4 (m, 3H), 3,52 (m, 1H), 4,02 (m, 2H), 5,28 (dd, 1H), 6,17 (d, 1H), 7,1 - 7,3 (m, 4H). Špecifická otáčavosť (EtOH): (a)D 20 = 24,1° (c = 1,0)
Z 1,5 g (2,6 mmol) diastereoméru BI sa uvedeným postupom získalo 800 mg (61,5 % teor.) (-)-enantiomémej sodnej soli (pr. 2).
Špecifická otáčavosť (EtOH): (a)D 20 = -23,2° (c = 1,0) Variant B spôsobu - delenie racemátu pomocou S-(+)-fenylglycinolu
a) Výroba diastereomérnych fenylglycinolamidov
418 g (0,88 mol) metyl-erytro-(E)-7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-enoátu a 360 g (2,6 mol) S-(+)-fenylglycinolu sa rozpustí v 1 1 absolútneho tetrahydrofúránu a zahrieva 96 hodín na 50 °C. Po ochladení na teplotu miestnosti sa pridá 1 1 vody, pH roztoku sa nastaví na 4 5N kyselinou chlorovodíkovou a trikrát sa extrahuje vždy 400 ml éteru. Spojené organické fázy sa premyjú 400 ml nasýteného roztoku chloridu sodného, sušia sa síranom sodným a odpa ria sa na rotačnej odparke. Zvyšok (500 g surového produktu) sa po dvoch častiach pretiahne stĺpcom (vždy asi
1,8 kg silikagélu) (elúcia octan/petroléter 8/2). Získa sa tak 350 g predčisteného surového produktu, ktorý je tvorený oboma diastereomémymi amidmi. Predčistený surový produkt sa v 7 podieloch á 50 g delí na stĺpci silikagélu (Bilchi - stĺpec, dĺžka 63 cm, priemer 7 cm, silikagél 20 pm, nanášanie vzorky 100 ml zabrúsenou vzorkovnicou).
Výťažok: 195 g (38,2 % teória) diastereoméru A2. Diastereomér B2 nebol izolovaný čistý, ale pri vymývaní stĺpca sa môže získať na prípadné neskoršie použitie ako surový produkt.
b) Výroba enantiomérne čistej sodnej soli (pr. 1/2)
195 g (0,34 mol) diastereomérne čistých amidov A2 sa rozpustí v 1 1 etanolu p.a. a po pridaní 1,2 1 IN hydroxidu sodného sa cez noc zahrieva na teplotu refluxu. Po vychladnutí na teplotu miestnosti sa supematant oddekantuje a olejovitý zvyšok sa trikrát rozmieša vždy s 50 ml etanolu p.a. Roztoky sa spoja a odparia. Zvyšok sa vyberie do 500 ml vody a 500 ml metylénchloridu a pH roztoku sa nastaví na 3,5 IN kyselinou chlorovodíkovou. Potom sa organická fáza oddelí a vodná fáza sa trikrát extrahuje vždy 400 ml metylénchloridu. Spojené organické fázy sa sušia (síran sodný) a odparia. Zvyšok sa rozpustí v 100 ml tetrahydrofuránu a roztok sa zriedi 500 ml vody. Potom sa hodnota pH nastaví na 7,5 IN hydroxidom sodným, tetrahydrofurán sa odtiahne na rotačnej odparke a zvyšný vodný roztok sa lyofilizuje.
Získa sa 142 g surového lyofilizátu, ktorý bol kvôli odsoleniu ďalej v 27 podieloch po 5 g a 2 podieloch po 3,5 g prečistený na stĺpci RP 18 (dĺžka 40 cm, priemer 3 cm, silikagél RP 18, 30 pm, elučné činidlo acetonitril/voda 30/70) a odsolený. Všetky frakcie, obsahujúce produkt, sa spoja, acetonitril sa odtiahne na rotačnej odparke a vodný zvyšok sa lyofílizuje. Výťažok: 102 g (62,5 % teória) (+)-enantiomémej sodnej soli (pr. 1).
PATENTOVÉ NÁROKY
1. Kyselina 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová so vzorcom (I)
Claims (11)
1. Kyselina 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová so vzorcom (I) ajej soli, v základnej a izomémej forme.
2. Kyselina 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová so vzorcom (I) podľa nároku 1 ajej soli v erytro-konfigurácii.
3. Kyselina 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová so vzorcom (I) podľa nároku 1 ajej soli ako (+)-enantioméry.
4. Kyselina 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová so vzorcom (I) podľa nároku 1 ajej soli ako (+)-enantioméry v erytro-konfigurácii.
5. Kyselina 7-[4-(4-fluórfcnyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová kyselina so vzorcom (I) podľa nároku 1 ako sodná, draselná, horečnatá a amóniová soľ, v základnej a izomémej forme.
6. Kyselina 7-[4-(4-fluórfcnyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énová so vzorcom (I) podľa nároku 1, ktorou je 3R, 5S -(+)-nátrium-erytro-(E)-7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-enoát.
7. 7-[4-(4-Fluórfenyl)-2,6-diizopropyl-5-metoxymetylpyrid-3-yl]-3,5-dihydroxy-hept-6-énové kyseliny so vzorcom (I) podľa nárokov 1 až 6 na použitie ako liečivo na liečenie hyperlipoproteinémie.
8. 7-[4-(4-Fluórfenyl)-2,6-diizopropyl-5-metoxymetylpyrid-3-yl]-3,5-dihydroxy-hept-6-énová so vzorcom (I) podľa nárokov 1 až 6 na použitie ako liečivo na liečenie artériosklerózy.
9. Spôsob výroby kyseliny 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énovej so vzorcom (I), ajej solí, v základnej a izomémej forme, vyznačujúci sa tým, že sa (A) v prípade racemických produktov hydrolyzuje zodpovedajúci raccmický ester so všeobecným vzorcom (II) v ktorom znamená
R1 alkylovú skupinu s 1 až 4 uhlíkovými atómami alebo benzylovú skupinu, alebo sa (B) v prípade stereoizoméme jednotných produktov prevedie racemický ester so všeobecným vzorcom (II) pomocou (+)- alebo (-)-enantiomémeho amínu so všeobecným vzor (ΠΙ), v ktorom znamená
R2 prípadne hydroxyskupinou substituovanú alkylovú skupinu s 1 až 4 uhlíkovými atómami a
R3 vodíkový atóm, atóm halogénu, alkylovú skupinu s 1 až 4 uhlíkovými atómami alebo alkoxyskupinu s 1 až 4 uhlíkovými atómami, na zodpovedajúce diastereoméme amidy so všeobecným vzorcom (IV) tieto sa rozdelia pomocou chromatografie alebo kryštalizácie na jednotlivé diastereoméry a nakoniec sa čisté diastereoméme amidy hydrolyzujú na enantiomérne čisté produkty.
10. Farmaceutický prostriedok, vyznačujúci sa t ý m , že ako účinnú látku obsahuje kyselinu 7-(4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3-yl]-3,5-dihydroxy-hept-6-énovú so vzorcom (I) podľa nárokov 1 až 6.
11. Diastereoméme amidy so všeobecným vzorcom (IV), v ktorom majú R2 a R3 uvedený význam, ako medziprodukty na výrobu 7-[4-(4-fluórfenyl)-2,6-diizopropyl-5-metoxymetyl-pyrid-3 -yl]-3,5-dihydroxy-hept-6-énovej kyseliny so vzorcom (I) podľa nárokov 1 až 6 a ich solí.
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DE4040026A DE4040026A1 (de) | 1990-12-14 | 1990-12-14 | Substituierte pyridyl-dihydroxy-heptensaeure und deren salze |
IT002125A ITMI912125A1 (it) | 1991-07-31 | 1991-07-31 | Acidi piridil-diidrossi-eptenoici sostituiti e loro sali |
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1991
- 1991-11-26 US US07/798,675 patent/US5177080A/en not_active Expired - Lifetime
- 1991-11-27 CZ CS913602A patent/CZ282642B6/cs not_active IP Right Cessation
- 1991-11-27 SK SK3602-91A patent/SK280115B6/sk unknown
- 1991-11-29 NO NO914696A patent/NO177140C/no not_active IP Right Cessation
- 1991-12-03 EP EP91120745A patent/EP0491226B1/de not_active Expired - Lifetime
- 1991-12-03 AT AT91120745T patent/ATE141261T1/de active
- 1991-12-03 ES ES91120745T patent/ES2091852T3/es not_active Expired - Lifetime
- 1991-12-03 DK DK91120745.4T patent/DK0491226T3/da active
- 1991-12-03 DE DE59108081T patent/DE59108081D1/de not_active Expired - Lifetime
- 1991-12-09 JP JP3349473A patent/JP2786363B2/ja not_active Expired - Fee Related
- 1991-12-11 CA CA002057444A patent/CA2057444C/en not_active Expired - Fee Related
- 1991-12-11 AU AU89615/91A patent/AU652977B2/en not_active Ceased
- 1991-12-11 NZ NZ240946A patent/NZ240946A/xx unknown
- 1991-12-11 IL IL10032791A patent/IL100327A/en not_active IP Right Cessation
- 1991-12-12 FI FI915854A patent/FI101069B/fi active Protection Beyond IP Right Term
- 1991-12-12 PT PT99776A patent/PT99776B/pt not_active IP Right Cessation
- 1991-12-13 HU HU945/91A patent/HU221293B1/hu not_active IP Right Cessation
- 1991-12-13 IE IE435091A patent/IE75691B1/en not_active IP Right Cessation
- 1991-12-13 PL PL91292764A patent/PL169757B1/pl unknown
- 1991-12-13 MY MYPI91002310A patent/MY107492A/en unknown
- 1991-12-13 KR KR1019910022918A patent/KR100192625B1/ko not_active IP Right Cessation
- 1991-12-14 CN CN91107973A patent/CN1034073C/zh not_active Expired - Fee Related
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1995
- 1995-05-26 CN CN95106818A patent/CN1092641C/zh not_active Expired - Fee Related
- 1995-06-09 HU HU95P/P00173P patent/HU211695A9/hu unknown
-
1996
- 1996-08-16 GR GR960402166T patent/GR3020826T3/el unknown
-
1997
- 1997-08-19 NL NL970033C patent/NL970033I1/nl unknown
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1998
- 1998-03-18 LU LU90230C patent/LU90230I2/fr unknown
- 1998-04-30 HK HK98103707A patent/HK1004552A1/xx not_active IP Right Cessation
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2000
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