NO814097L - Fremgangsmaate til fremstilling av 3,4-disubstituerte 1,2,5-oksadiazol-2-oksyder - Google Patents
Fremgangsmaate til fremstilling av 3,4-disubstituerte 1,2,5-oksadiazol-2-oksyderInfo
- Publication number
- NO814097L NO814097L NO814097A NO814097A NO814097L NO 814097 L NO814097 L NO 814097L NO 814097 A NO814097 A NO 814097A NO 814097 A NO814097 A NO 814097A NO 814097 L NO814097 L NO 814097L
- Authority
- NO
- Norway
- Prior art keywords
- denotes
- see diagramm
- oxadiazole
- formula
- methyl
- Prior art date
Links
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- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 38
- 239000002253 acid Substances 0.000 claims abstract description 18
- -1 3,4-Disubstituted 1,2,5-oxadiazole-2-oxides Chemical class 0.000 claims abstract description 14
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 12
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 12
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- 125000000217 alkyl group Chemical group 0.000 claims abstract description 8
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- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims abstract description 4
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- 229940032330 sulfuric acid Drugs 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000003765 sweetening agent Substances 0.000 description 1
- 230000035488 systolic blood pressure Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 229960001367 tartaric acid Drugs 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000004809 thin layer chromatography Methods 0.000 description 1
- 238000007395 thrombosis prophylaxis Methods 0.000 description 1
- 235000015961 tonic Nutrition 0.000 description 1
- 230000001256 tonic effect Effects 0.000 description 1
- 229960000716 tonics Drugs 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 229940124549 vasodilator Drugs 0.000 description 1
- 239000003071 vasodilator agent Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7028—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages
- A61K31/7034—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin
- A61K31/704—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin attached to a condensed carbocyclic ring system, e.g. sennosides, thiocolchicosides, escin, daunorubicin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/42—Oxazoles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/47—Quinolines; Isoquinolines
- A61K31/475—Quinolines; Isoquinolines having an indole ring, e.g. yohimbine, reserpine, strychnine, vinblastine
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/50—Pyridazines; Hydrogenated pyridazines
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/54—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one sulfur as the ring hetero atoms, e.g. sulthiame
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/55—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having seven-membered rings, e.g. azelastine, pentylenetetrazole
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
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- A61P9/08—Vasodilators for multiple indications
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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- A61P9/12—Antihypertensives
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D271/00—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms
- C07D271/02—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms not condensed with other rings
- C07D271/08—1,2,5-Oxadiazoles; Hydrogenated 1,2,5-oxadiazoles
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Description
Oppfinnelsen vedrører fremgangsmåte til fremstilling av 3,4-disubstituerte 1,2,5-oksadiazol-2-oksyder med. formel I
og deres farmakologisk godtagbare syreaddisjonsforbindelser.
I formel I har restene følgende betydning:
R<1>betyr for det tilfelle at R<2>betyr -CH3:
dfe o3r ovdeent fotr ilffeor lle R 1 aat ngR i2ttee r bfeotrysdknjeinlgleig r, fbra ety-Cr HR -J, l og -CHha7r ,en av R betyr en alkylenrest -C H„ -, idet n betyr 2, 3 eller 4,48n 2n ' n 2, 4, R og R betyr -CH3, ~C2H5,
R5 betyr -OCH-,, -Cl,
R betyr -H, -CH-./
7
R betyr alkyl med 1-4 C-atomer, cykloalkyl med 5-7 C-atomer, allyl, pyridylmetyl,
X betyr -(CH2)2~0-(CH2)2~,
—CH2CH2CH2CH2
eller -CH2CH2CH2CH2CH2~,
R<2>betyr1-CH-. og for - det tilfelle at R<1>betyr -CH-., har R<2>en for R angitt betydning unntatt -CH.,.
12 Av de ovennevnte definisjoner av restene R og R
fremgår at ved forbindelsene med formel I betyr alltid én
1 2 1
og 2bare en av restene R eller R -CH.,, dvs. restene R og R kan i en forbindelse ikke samtidig bety -CH^, én av dem må imidlertid bety -CH-..
7 8
De for R (og de for nedennevnte R ) angitte al-kylrester og den for R 3 angitte alkylenrest kan være rett-linjet eller forgrenet. R 3 betyr fortrinnsvis -CH2CH2-eller -CH-CH-CH»-. Av forbindelsene med formel I er de fore-2 1 trukket hvor R betyr -CH^, videre de som i resten R har en -NH-gruppering.
2
Forbindelsene med formel I med R er lik -CH^kan ifølge oppfinnelsen fremstilles ved omsetning av 3-metyl-1,2,5-oksadiazol-2-oksyd-4-karboksylsyreestere med formel II med et amin HZ
R g betyr derved en alkylrest med 1-6 C-atomer, spesielt 1-4 C-atomer, fortrinnsvis metyl eller etyl. Aminet HZ velges derved således at resten Z sammen med karbonylgruppen av esteren II i forbindelsen Ia danner resten R''". Z har derved følgende betydninger:
Omsetningen av forbindelsen II med aminet HZ gjen-nomføres hensiktsmessig i et egnet oppløsnings- eller dispergeringsmiddel. Som slike oppløsnings- eller dispergerings-midler kan det eksempelvis anvendes alkoholer som metanol, etanol, i-propanol, videre etere som dietyleter, dioksan, tetrahydrofuran, ketoner som aceton, hydrokarboner som toluen, xylener, petroleter, halogenerte hydrokarboner som kloro-form, klorbenzen, polare aprotiske oppløsningsmidler som f.eks. acetonitril, dimetylformamid eller vandige oppløsning-er av aminet HZ. Reaksjonen gjennomføres vanligvis ved temperaturer fra 15 - 25°C'. Den kan imidlertid også gjennom-føres ved temperaturer på 0°C inntil oppløsnings- eller dis-pergeringsmidlets tilbakeløpstemperatur.
g
Forbindelsen med formel II hvor R betyr etyl er omtalt i Berichte der deutschen chemischen .Gesellschaft 28, 2681 (1895) som ester av peroksydiisonitrososmørsyre. Forbindelser med formel II med andre R g-rester lar seg frem-stille analogt ved valg av egnede utgangsprodukter.
Forbindelsene med R"<*>" = CH^, som tilkommer formel Ib
fremstilles av forbindelsene Ia ved termisk omleiring. Den termiske omleiringen gjennomføres hensiktsmessig uten opp-løsnings- eller dispergeringsmiddel ved oppvarming av stof-fet til temperaturer på 150 - 220°C, fortrinnsvis 180 - 200°C. Den termiske omleiring er vanligvis avsluttet etter 15 - 120 minutter, i de fleste tilfeller etter 30 - 60 minutter. For-løpet av omleiringen kan følges tynnsjiktkromatografisk.
Forbindelsene I som har en basisk sidekjede danner med uorganiske eller organiske syrer salter. Slike syrer er eksempelvis klorhydrogen-, bromhydrogen-, fosfor-, svovel-, oksalsyre-, melke-, vin-, eddik-, salicyl-, benzo-, sitron-, askorbin-, adipin- og naftalindisulfonsyre. Syreaddisjons-forbindelsene fås på kjent måte ved forening av komponentene i et egnet oppløsnings- eller dispergeringsmiddel.
Forbindelsene med formel I og der farmakologisk godtagbare syreaddisjonsforbindelser har verdifulle farmakologiske egenskaper. Spesielt utpreget er deres virkning på hjertekretsløpsystemet.. De senker i lave doseringer blod-trykket, nedsetter den perifere motstand og fører over en senkning av pulmonalarterietrykket ved lite påvirket hjertefrekvens til en nedsettelse av hjertearbeidet.
Forbindelsene med formel I og deres farmakologisk godtagbare syreaddisjonssalter kan derfor administreres på mennesker som helbredelsesmiddel alene, i blanding med hver-andre eller i form av farmasøytiske tilberedninger som mulig-gjør en enteral eller parenteral anvendelse og som aktiv bestanddel inneholder en virksom dose av minst én forbindelse med formel I eller et syreaddisjonssalt herav ved siden av vanlige farmasøytisk ufarlige bære- og tilsetningsstoffer.
Legemidlene kan administreres oralt, f.eks. i form
av piller, tabletter, lakktabletter, drageer, hård- og mykgelatinkapsler, oppløsninger, siruper, emulsjoner eller sus-pensjoner eller aerosolblandinger. Administreringen kan imidlertid også foregå rektalt, f.eks. i form av suppositorier, eller parenteralt, f.eks. i form av injeksjonsoppløsninger eller perkutant, f.eks. i form av salver eller tinkturer.
For fremstilling av farmasøytiske preparater anvendes farmasøytisk inerte uorganiske eller organiske bærestoffer. For fremstillingen av piller, tabletter, drageer og hårdgelatinkapsler anvender man f.eks. laktose, maisstiv-else eller derivater herav, talkum, stearinsyre eller deres salter etc. Bærestoffer for mykgelatinkapsler og suppositorier er f.eks. fett, voks, halvfaste og flytende polyoler, na-turlige eller herdede oljer etc. Som bærestoffer for fremstilling av oppløsninger og siruper egner det seg f.eks. vann, sakkarose, invertsukker, glukose, polyoler etc. Som bærestoffer for fremstilling av injeksjonsoppløsninger egner det seg f.eks. vann, alkoholer, glycerol, polyoler, planteoljer etc.
De farmasøytiske preparater kan ved siden av virksomme stoffer og bærestoffer dessuten inneholde tilsetningsstoffer som f.eks. fyllstoffer, drøyemidler, sprengmidler, bindemidler, glidemidler, fuktemidler, stabiliseringsmidler, emulgeringsmidler, konserveringsmidler, søtningsstoffer, fargestoffer, smakstoffer eller aromatiseringsmidler, for-tykningsmidler, fortynningsmidler, pufferstoffer, videre opp-løsningsmidler eller oppløsningsformidlere eller midler til oppnåelse av en depoteffekt, som salter til endring av det osmotiske trykk, overtrekksmidler eller antioksydanter. De kan også inneholde to eller flere forbindelser med formel I eller deres farmakologisk godtagbare syreaddisjonssalter og dessuten andre terapeutisk virksomme stoffer.
Slike andre terapeutisk virksomme stoffer er eksempelvis: ^-reseptorblokkereré som f.eks. propranolol, pindolol, metoprolol, vasodilatorer som f.eks. karbokromer, beroligel-sesmidler som f.eks. barbitursyrederivater, 1,4-benzodiaze-piner og meprobamat, diuretika som f.eks. klortiazid, hjerte-toniserende midler som f.eks. digitalispreparater, blodtrykk-senkende midler som hydralazin, dihydralazin, prazosin, kloni-din, Rauwolfia-alkaloider, midler som senker fettsyrespeilet i blodet som f.eks. bezafibrat, fenofibrat, midler for trom-boseprofylakse som f.eks. fenprocoumon.
Forbindelsene med formel I, deres farmakologisk godtagbare syreaddisjonssalter og farmasøytiske preparater som inneholder forbindelsene med formel I eller deres farmakologisk godtagbare syreaddisjonssalter som virksomme stoffer, kan anvendes på mennesker ved bekjempelse resp. forebyggelse av sykdommer i det kardiovaskulære system, eksempelvis som anti-hypertensivt helbredelsesmiddel ved de forskjelligste former av høyt blodtrykk, ved bekjempelse resp. forebyggelse av angina pectoris osv. Doseringen kan variere innen vide gren-ser og er i et hvert tilfelle å tilpasse den individuelle tilstand. Vanligvis er det ved oral administrering pr. menneskeindivid å tilmåle en dagsdose fra ca. 0,2 - 150 mg, fortrinnsvis 1 - 30 mg. Også ved andre applikasjonsformer ligger dagsdosen på grunn av de virksomme stoffers gode resorb- sjon i tilsvarende mengdeområder, dvs. vanligvis likeledes ved 0,2 - 150 mg pr. menneske. Dagsdosen oppdeles normalt i flere, f.eks. 2-4 deladministreringer.
De farmasøytiske tilberedninger inneholder av de virksomme stoffer med formel I og deres farmakologisk godtagbare syreaddisjonssalter vanligvis 0,1 - 50 mg, fortrinnsvis 0,5 - 10 mg pr. dose.
Undersøkelsen over den antianginøse og antihyper-tensive virkning av forbindelsene med formel I ble gjennom-ført på bastardhunder av begge kjønn i pentobarbitalnarkose (30 - 40 mg/kg i.v.) eller i uretan-kloralose-narkose (3 ml/kg uretan-kloraloseblanding i.v. = 20 mg/kg kloralose og 250 mg/kg uretan). Dyrenes åndning foregikk med en Bird-Mark-7-respirator. Det sluttekspiratoriske karbonsyreinnhold (målt med uras) utgjorde mellom 4,5 og 5 volum-%. Under det sam-lede forsøk fikk dyrene med pentobarbitalnarkose en perma-nentinfusjon av pentobarbital i.v. = 4 mg/kg/6 ml/h for å sikre en konstant narkosedybde. Dyrene med uretan-kloralose-narkose fikk ingen permanent infusjon. Infusjonen ble gitt gjennom vena cephalica. Etter prepareringen av forsøksdyret ble det ventet ca. 1 time inntil alle hemodynamiske para-metre hadde innstilt seg (steady state). Deretter ble det begynt med det egentlige forsøk.
Det systoliske og diastoliske blodtrykk ble målt perifert i ateria femoralis over en Statham-trykkopptaker.
Et over arteria carotis i den venstre ventrikkel skjøvet Miller-Tip-kateter gir signalet for LVEDP (venstreventrikulært sluttdiastolisk trykk) og hjertefrekvensen. Med et annet over vena jugularis innskjøvet Tip-kateter ble det fastslått midlere blodtrykk i arteria pulmonalis. De oppnådde resul-tater er oppført i følgende tabell.
I tabellen betyr:
LVEDP = venstreventrikulært sluttdiastolisk trykk
PAP = midlere pulmonalarterietrykk
BDm = midlere perifert blodtrykk
HF = hjertefrekvens
ISDN = isosorbiddinitrat (sammenligningsstoff)
A = 1,2,5-oksadiazol-2-oksyd-4-metyl-3-karboksylsyremetylamid
B = 1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyre-metoksyetylamid
C = 1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyre-(pyrid-3-yl--metylamid) .
Oppfinnelsen skal forklares nærmere ved hjelp av noen eksempler.
Eksempel 1
1,2,5-oksadiazol-2-oksyd-3-metyl-4-(karboksylsyre-2-hydroksy-etylamid)
19,2 g 1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksyl-syreetylester ble oppløst i 50 ml etanol. Ved 20°C tildryp-pes en oppløsning av 6,1 g etanolamin i 40 ml etanol. Bland-ingen omrøres 4 timer ved 20°C og avkjøles til 0°C. Det faste stoff suges fra, vaskes med litt kald etanol og omkry-stalliseres fra isopropanol: fargeløse krystaller av smeltepunkt 107 - 108°C.
Analogt denne fremgangsmåte kan det fremstilles følgende forbindelser i de angitte oppløsningsmidler ved de angitte reaksjonstemperaturer: 1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyreallylamid (olje) i metanol ved 15°C.
1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyremetylamid (smeltepunkt 89 - 91°C) i vann ved 0°G.
1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyreetylamid (smeltepunkt 80 - 82°C) i i-propanol ved 20°C. 1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyreisopropyl-amid (smeltepunkt 94 - 95°C) i toluen ved 50°C. 1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyre(2-dietyl-
i
i
aminoetylamid) (smeltepunkt 216°C, NDS-salt) i dietyleter ved tilbakeløpstemperatur.
1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyre-(3-dietyl-aminopropylamid) (olje) i dietyleter ved tilbakeløpstempe-ratur.
1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyre-/3-(4-o-metoksyfenylpiperazin-l-yl)-propylamid7 (smeltepunkt 232°C, NDS-salt) i toluen ved 110°C.
1,2,5-oksadiazol-2-oksyd-3-mety1-4-karboksylsyre-(4-o-metok-syfenylpiperazinid) (smeltepunkt 152 - 153°C) i klorbenzen ved 100°C.
1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyre-/3-(4-o-klorf enylpiperazin-l-yl) -propylamid? (smeltepunkt 205 - 206°C dekomponering NDS-salt) i toluen ved 110°C.
1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyre-/3-(4-o-metoksyfenylpiperazin-l-yl)-2-metyl-propylamid7 (smeltepunkt 114 - 115°C) i toluen ved llo°C.
1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyrecyklopentyl-amid (smeltepunkt 104 - 106°C) i etanol ved 40°C. 1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyrecykloheksyl-amid (smeltepunkt 95 - 96,5°C) i etanol ved 60°C. 1> 2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyre(2-m-toksy-etylamid) (smeltepunkt 69 - 70°C) i etanol ved 20°C. 1.2- bis-/l,2,5-oksadiazol-2oksyd-3-metyl-4-karbonylaming7-etan (smeltepunkt 195 - 200°C dekomponering) i etanol ved 25°C. 1.3- bis-/l,2,5-oksadiazol-2-oksyd-3-metyl-4-karbonylamino7-propan (smeltepunkt 183 - 186°C) i etanol ved 25°C. 1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyremorfolid (smeltepunkt 75 - 78°C) i acetonitril ved 40°C. 1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyrebenzylamid (smeltepunkt 91 - 93°C) i petroleter ved 20°C.
1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyrepyrrolidid (smeltepunkt 65 - 67°C) i etanol ved 15°C.
1,2,5-oksadiazol-2-oksyd-3-mety1-4-karboksylsyre-(4-metyl-piperazid)-hydroklorid (smeltepunkt 278 - 280°C dekomponering) i metylenklorid ved 25°C.
1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyredimetylamid
(smeltepunkt 70 - 72°C) i dimetylformamid/vann ved 30°C. 1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyre-(pyrid-3-yl-metylamid) (smeltepunkt 127 - 129°C) i etanol ved 25°C. Eksempel 2
1, 2, 5- oksadiåzol- 2- oksyd- 4- metyl- 3- karboksylsyremetylamid
5 g 1,2,5-oksadiazol-2-oksyd-3-metyl-4-karboksylsyremetylamid oppvarmes uten oppløsningsmiddel i 30 minutter ved 190°C. Etter smeltens avkjøling oppdeles produkt-blandingen søylekromatografisk (elueringsmiddel: metylenklorid, søylefylling: kiselgel). Den hurtigereløpende frak-sjon inndampes og utrøres med ligroin. Det hvite faste stoff frasuges og er analyserent etter tørking i vakuum: smeltepunkt 57 - 59°C.
Analogt denne fremgangsmåte kan det fremstilles følgende forbindelser ved de etter forbindelsene angitte reaksjonstemperaturer: 1,2,5-oksadiazol-2-oksyd-4-metyl-3-karboksylsyreetylamid (olje) 150°C,
1,2,5-oksadiazol-2-oksyd-4-metyl-3-karboksylsyre-(2-metoksy-etylamid) (olje) ved 220°C,
1,2,5-oksadiazol-2-oksyd-4-metyl-3-karboksylsyre-isopropyl-amid (smeltepunkt 65 - 68°C) ved 200°C,
1,2,5-oksadiazol-2-oksyd-4-metyl-3-karboksylsyre-(2-dietyl-aminoetylamid) (smeltepunkt 200 - 202°C NDS-salt) ved 190°C, 1,2,5-oksadiazol-2-oksyd-4-metyl-3-karboksylsyre-(4-o-met-oksyfenylpiperazinid) (smeltepunkt 129 - 131°C) ved 200°C, 1,2,5-oksadiazol-2-oksyd-4-metyl-3-karboksylsyrecyklopentyl-amid (smeltepunkt 91 - 94°C) ved 190°C,
1,2,5-oksadiazol-2-oksyd-4-metyl-3-karboksylsyremorfolid (smeltepunkt 45 - 46°C) ved 185°C,
1,2,5-oksadiazol-2-oksyd-4-metyl-3-karboksylsyrepyrrolidid (olje) ved 180°C,
1,2,5-oksadiazol-2-oksyd-4-metyl-3-karboksylsyre-(4-metyl-piperazid (smeltepunkt av hydrokloridet 250 - 252°C dekomponering) ved 195°C.
Angivelsen "NDS-salt" i sammenheng med smeltepunktet ved noen av de ovennevnte forbindelser betyr at det dreier seg om smeltepunktet av addisjonsforbindelsen med naftalin-1,5-disulfosyre.
Strukturene av de syntetiserte forbindelser kunne bekreftes ved elementæranalyse og ved IR- og NMR-spektre.
Claims (3)
1. Fremgangsmåte til fremstilling av 3,4-disubstituerte 1,2,5-oksadiazol-2-oksyder med formel I
hvori
R <1> for det tilfelle at R <2> betyr -CH3 =
og for det tilfelle at R 2 er forskjellig fra-CH, og har en 1 1 av de ovenfor for R angitte betydninger, betyr R -CH-,,
3
R betyr en alkylenrest -C H» -, idet n betyr 2, 3 eller 4, 4 8 n
R og R° = -CH3 ," C2 H5 ,
R5
R = —H, —CH_,
7
R betyr alkyl med 1-4 C-atomer, cykloalkyl med 5 - 7 C-atomer, allyl, pyridylmetyl X betyr -(CH2 )2~ 0-(CH2 )2~ ,
-, -CH2 CH2 CH2 CH2 -eller -CH2 CH2 CH2 CH2 CH2~ R <2> betyr -CH
2 1
og R betyr for det tilfelle at R betyr -CH., én av de for R 1 med unntak av -CH^ angitte betydninger samt deres farmakologisk godtakbare syreaddisjonsforbindelser, karakterisert ved at en 3-metyl-l,2,5-oksadiazol-2-oksyd-4-karboksylsyreester med formel II
hvori R g betyr alkyl med 1-6 C-atomer omsettes med et amin HZ og derved utvelges aminet således at resten Z med karbonylgruppen av esteren II danner resten R og den dannede' forbindelse overføres eventuelt i en syreaddisjonsforbindelse eller eventuelt for fremstilling av forbindelser med formel Ib
oppvarmes til temperaturer på 150 - 220°C, fortrinnsvis 180 - 200°C og den dannede forbindelse overføres eventuelt til en syreaddisjonsforbindelse.
2. Fremgangsmåte ifølge krav 1, karakterisert ved at omsetningen av esteren med formel II med aminet HZ gjennomføres i et oppløsnings- eller dispergeringsmiddel ved temperaturer på 0°C inntil oppløsnings- eller dis-pergeringsmidlets tilbakeløpstemperatur.
3. Fremgangsmåte ifølge krav 1 eller 2, karakterisert ved at R g betyr alkyl med 1-4 C-atomer, fortrinnsvis metyl eller etyl.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803047749 DE3047749A1 (de) | 1980-12-18 | 1980-12-18 | 3,4-disubstituierte 1,2,5-oxdiazol-2-oxide, verfahren zu ihrer herstellung, ihre verwendung und sie enthaltende pharmazeutische zubereitungen |
Publications (1)
Publication Number | Publication Date |
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NO814097L true NO814097L (no) | 1982-06-21 |
Family
ID=6119512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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NO814097A NO814097L (no) | 1980-12-18 | 1981-12-01 | Fremgangsmaate til fremstilling av 3,4-disubstituerte 1,2,5-oksadiazol-2-oksyder |
Country Status (14)
Country | Link |
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EP (1) | EP0054873B1 (no) |
JP (1) | JPS57123174A (no) |
AT (1) | ATE9692T1 (no) |
AU (1) | AU7855781A (no) |
CA (1) | CA1173034A (no) |
DD (1) | DD202019A5 (no) |
DE (2) | DE3047749A1 (no) |
DK (1) | DK533781A (no) |
ES (1) | ES8300102A1 (no) |
HU (1) | HU183750B (no) |
NO (1) | NO814097L (no) |
PL (1) | PL234258A1 (no) |
SU (1) | SU1152519A3 (no) |
ZA (1) | ZA818725B (no) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4507485A (en) * | 1984-01-23 | 1985-03-26 | Bristol-Myers Company | 3,4-Disubstituted-1,2,5-oxadiazoles having histamine H2 -receptor antagonist activity |
DE4217794A1 (de) * | 1992-05-29 | 1993-12-02 | Cassella Ag | Phenylfuroxane |
DE4218582A1 (de) * | 1992-06-05 | 1993-12-09 | Cassella Ag | Pyridyl-1,2,5-oxadiazol-carbonamid-2-oxide |
DE4218979A1 (de) * | 1992-06-10 | 1993-12-16 | Cassella Ag | Pyrimidofuroxane |
DE4220264A1 (de) * | 1992-06-20 | 1993-12-23 | Cassella Ag | Phenyl-1,2,5-oxadiazol-carbonamid-2-oxide |
DE4223800A1 (de) * | 1992-07-20 | 1994-01-27 | Cassella Farbwerke Mainkur Ag | Verwendung von 1.2.5-Oxadiazol-2-oxiden zur Behandlung erektiler Dysfunktionen |
DE4401150A1 (de) * | 1994-01-17 | 1995-07-20 | Cassella Ag | Furazancarbonsäurederivate |
Family Cites Families (2)
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CH498854A (de) * | 1968-02-06 | 1970-11-15 | Geigy Ag J R | Verfahren zur Herstellung von neuen Furazanderivaten |
GB1474692A (en) * | 1973-05-21 | 1977-05-25 | Ici Ltd | Furoxan production |
-
1980
- 1980-12-18 DE DE19803047749 patent/DE3047749A1/de not_active Withdrawn
-
1981
- 1981-12-01 DK DK533781A patent/DK533781A/da not_active Application Discontinuation
- 1981-12-01 NO NO814097A patent/NO814097L/no unknown
- 1981-12-12 AT AT81110400T patent/ATE9692T1/de not_active IP Right Cessation
- 1981-12-12 EP EP81110400A patent/EP0054873B1/de not_active Expired
- 1981-12-12 DE DE8181110400T patent/DE3166527D1/de not_active Expired
- 1981-12-14 DD DD81235739A patent/DD202019A5/de unknown
- 1981-12-15 PL PL23425881A patent/PL234258A1/xx unknown
- 1981-12-16 AU AU78557/81A patent/AU7855781A/en not_active Abandoned
- 1981-12-16 SU SU813367546A patent/SU1152519A3/ru active
- 1981-12-17 CA CA000392542A patent/CA1173034A/en not_active Expired
- 1981-12-17 JP JP56202599A patent/JPS57123174A/ja active Pending
- 1981-12-17 ZA ZA818725A patent/ZA818725B/xx unknown
- 1981-12-17 ES ES508087A patent/ES8300102A1/es not_active Expired
- 1981-12-18 HU HU813860A patent/HU183750B/hu unknown
Also Published As
Publication number | Publication date |
---|---|
ES508087A0 (es) | 1982-10-01 |
CA1173034A (en) | 1984-08-21 |
DE3166527D1 (en) | 1984-11-08 |
SU1152519A3 (en) | 1985-04-23 |
EP0054873A1 (de) | 1982-06-30 |
AU7855781A (en) | 1982-06-24 |
ES8300102A1 (es) | 1982-10-01 |
PL234258A1 (no) | 1982-08-02 |
DD202019A5 (de) | 1983-08-24 |
ATE9692T1 (de) | 1984-10-15 |
ZA818725B (en) | 1982-11-24 |
EP0054873B1 (de) | 1984-10-03 |
DE3047749A1 (de) | 1982-07-22 |
HU183750B (en) | 1984-05-28 |
DK533781A (da) | 1982-06-19 |
JPS57123174A (en) | 1982-07-31 |
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