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NO165026B - ANALOGY PROCEDURE FOR THE PREPARATION OF THE SODIUM SALT 9- (1,2-DIHYDROXY-2-PROPOXYMETHYL) GUANINE. - Google Patents

ANALOGY PROCEDURE FOR THE PREPARATION OF THE SODIUM SALT 9- (1,2-DIHYDROXY-2-PROPOXYMETHYL) GUANINE. Download PDF

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Publication number
NO165026B
NO165026B NO890477A NO890477A NO165026B NO 165026 B NO165026 B NO 165026B NO 890477 A NO890477 A NO 890477A NO 890477 A NO890477 A NO 890477A NO 165026 B NO165026 B NO 165026B
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Norway
Prior art keywords
propoxymethyl
guanine
dihydroxy
sodium salt
compound
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Application number
NO890477A
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Norwegian (no)
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NO165026C (en
NO890477L (en
NO890477D0 (en
Inventor
Julien P Verheyden
John C Martin
Original Assignee
Syntex Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US06267210 external-priority patent/US4355032B2/en
Publication of NO890477L publication Critical patent/NO890477L/en
Application filed by Syntex Inc filed Critical Syntex Inc
Priority to NO890477A priority Critical patent/NO165026C/en
Publication of NO890477D0 publication Critical patent/NO890477D0/en
Publication of NO165026B publication Critical patent/NO165026B/en
Publication of NO165026C publication Critical patent/NO165026C/en

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Description

Denne oppfinnelse angår fremstilling av 9-(1,3-dihydroksy-2-propoksymetyl)guanin som er nyttige som anti-virusmidler. This invention relates to the preparation of 9-(1,3-dihydroxy-2-propoxymethyl)guanine which are useful as anti-viral agents.

Virus-infeksjoner er utbredt og medfører en rekke for-skjellige symptomer. Noen virus-infeksjoner bekjempes lett ved hjelp av kroppens forsvarsmekanisme, mens andre er av en Virus infections are widespread and cause a number of different symptoms. Some virus infections are easily fought off using the body's defense mechanism, while others are by a

mer alvorlig natur og fører til permanent skade, for eksempel blindhet eller til og med til død. En slik virus-familie som kan forårsake alvorlige infeksjoner, er Herpes virus-gruppen. more serious in nature and lead to permanent damage, such as blindness or even death. One such virus family that can cause serious infections is the Herpes virus group.

De midler som for tiden anvendes til bekjempelse av virus-infeksjoner, er i mange tilfeller inneffektive eller, hvis de er effektive, må de anvendes i store og/eller kontinuerlige doser som medfører alvorlige bivirkninger og/eller giftvirkninger. Det er derfor et behov for et effektivt anti-virusmiddel som er effektivt ved lavere doser enn de midler som for tiden er tilgjengelige, slik at man reduserer sjansen for mulige bivirkninger og giftvirkninger. The agents that are currently used to combat virus infections are in many cases ineffective or, if they are effective, they must be used in large and/or continuous doses that cause serious side effects and/or toxic effects. There is therefore a need for an effective anti-viral agent which is effective at lower doses than the agents currently available, so that the chance of possible side effects and toxic effects is reduced.

US-patent 4 199 574 beskriver forbindelser med den gene-relle formel: US patent 4,199,574 describes compounds with the general formula:

hvor X er svovel eller oksygen, R1 er hydrogen, halogen, hydroksy, alkoksy, azid, tio, alkyltio, amino, alkylamino eller dialkylamino; R2 er hydrogen, halogen, alkyltio, acylamino, amino eller azid; R<3> er hydrogen, lineær eller forgrenet eller cyklisk alkyl, hydroksyalkyl, benzyloksyalkyl eller fenyl; R where X is sulfur or oxygen, R 1 is hydrogen, halogen, hydroxy, alkoxy, azide, thio, alkylthio, amino, alkylamino or dialkylamino; R 2 is hydrogen, halogen, alkylthio, acylamino, amino or azide; R<3> is hydrogen, linear or branched or cyclic alkyl, hydroxyalkyl, benzyloxyalkyl or phenyl; R

er hydrogen, hydroksy eller alkyl; R<5> er hydrogen, hydroksy, amino, alkyl, hydroksyalkyl, benzyloksy, benzoyloksy, benzoyl-oksymetyl, sulfamoyloksy, fosfat, karboksypropiamyloksy, lineær eller cyklisk acyloksy med fra 1 til 8 karbonatomer, for eksempel acetoksy eller en substituert karbamoylgruppe med formelen is hydrogen, hydroxy or alkyl; R<5> is hydrogen, hydroxy, amino, alkyl, hydroxyalkyl, benzyloxy, benzoyloxy, benzoyloxymethyl, sulfamoyloxy, phosphate, carboxypropiamyloxy, linear or cyclic acyloxy with from 1 to 8 carbon atoms, for example acetoxy or a substituted carbamoyl group of the formula

NHCO-Z hvor Z er alkyl, aryl eller aralkyl eventuelt substituert med en eller flere av sulfonyl, amino, karbamoyl eller halogen; R er hydrogen eller alkyl, forutsatt at når X er oksygen og R2, R"^, r'* og R^ er hydrogen, er R^ ikke amino eller metylamino når R^ er hydrogen eller hydroksy, eller et salt derav. NHCO-Z where Z is alkyl, aryl or aralkyl optionally substituted with one or more of sulfonyl, amino, carbamoyl or halogen; R is hydrogen or alkyl, provided that when X is oxygen and R2, R"^, r'* and R^ are hydrogen, R^ is not amino or methylamino when R^ is hydrogen or hydroxy, or a salt thereof.

Den klasse forbindelser som representeres av den ovenstående formel og de farmasøytisk godtagbare syreaddisjons-salter derav er angitt og ha anti-virus-aktivitet. Se også Tetrahedron Letters, 21, 327-30 (1980). The class of compounds represented by the above formula and the pharmaceutically acceptable acid addition salts thereof are said to have anti-viral activity. See also Tetrahedron Letters, 21, 327-30 (1980).

Det er nu overraskende funnet at forbindelsen 9-(1,3-dihydroksy-2-propoksymetyl)guanin er et særlig aktivt anti-virusmiddel. Den selektive aktivitet av denne forbindelse illustreres særlig klart for forbindelsen sammenlignet med de strukturelt mest likeartede forbindelser beskrevet i US-patent 4 199 574 ved en anti-virus-undersøkelse som ef vist i detalj nedenfor. It has now surprisingly been found that the compound 9-(1,3-dihydroxy-2-propoxymethyl)guanine is a particularly active anti-viral agent. The selective activity of this compound is particularly clearly illustrated for the compound compared to the structurally most similar compounds described in US patent 4,199,574 by an anti-virus study as shown in detail below.

Ifølge oppfinnelsen fremstilles forbindelsen 9-(1,3-dihydroksy-2-propoksymetyl)guanin som kan representeres ved formelen According to the invention, the compound 9-(1,3-dihydroxy-2-propoxymethyl)guanine is produced which can be represented by the formula

ved at natriumsaltet omdannes til den tilsvarende frie forbindelse. in that the sodium salt is converted into the corresponding free compound.

Flere fremgangsmåter for fremstilling av forbindelsen med formel I og salter derav er beskrevet i stamsøknaden 82.1676, patent 161.740. Several methods for preparing the compound of formula I and salts thereof are described in parent application 82.1676, patent 161.740.

I det følgende er oppfinnelsen beskrevet ytterligere som illustrasjon. In the following, the invention is further described by way of illustration.

Eksempel Example

Natriumsaltet av 9-(1,3-dihydroksy-2-propaoksymetyl)guanin ble oppløst i en minimumsmengde vann, og fortynnet saltsyre ble tilsatt for å regulere pH-verdien til 7. 9-(l,3-dihydroksy-2-propoksymetyl)guanin, smp. 250°C (dekomp.) krystalliserte fra oppløsningen. The sodium salt of 9-(1,3-dihydroxy-2-propoxymethyl)guanine was dissolved in a minimum amount of water, and dilute hydrochloric acid was added to adjust the pH to 7. 9-(1,3-dihydroxy-2-propoxymethyl) guanine, m.p. 250°C (decomp.) crystallized from the solution.

Den meget gode antivirus-aktivitet hos forbindelsen med formel I illustreres ved de følgende undersøkelser: The very good antiviral activity of the compound of formula I is illustrated by the following investigations:

Herpes simplex-virus 2 stamme G for infeksjon ble fremstilt Herpes simplex virus 2 strain G for infection was prepared

i HEp-2 celle-kulturer. Virus ble adsorbert i 1 time, friske medier ble anbrakt på cellene, og de ble inkubert ved 35°C inntil alle celler var infisert. Celle-suspensjonen ble frosset ved -70°C, tinet og sentrifugert for å fjerne celle-avfall. in HEp-2 cell cultures. Virus was adsorbed for 1 hour, fresh media was placed on the cells, and they were incubated at 35°C until all cells were infected. The cell suspension was frozen at -70°C, thawed and centrifuged to remove cell debris.

Den supernatante . væske ble inndelt i passende porsjoner og lagret i frossen tilstand ved -70°C inntil den skulle brukes. The supernatant. liquid was divided into appropriate portions and stored frozen at -70°C until use.

En IO<6>'<7> fortynning av supernatant-væsken... ga en 50 % celle-kultur-infiserende dose (CCID^q) i HEp-2 celler, og en 10 3 '7 fortynning medførte en 50 % dødelig smitte (LC^g) hos mus. A 10<6>'<7> dilution of the supernatant fluid... gave a 50% cell culture infectious dose (CCID^q) in HEp-2 cells, and a 10 3 '7 dilution resulted in a 50% lethal infection (LC^g) in mice.

Grupper på 20 hunnmus (15-17 g) ble smittet intraperitonealt under anvendelse av 0,2 ml EMEM inneholdende 10 LC^0/mus av virus. Mus smittet med IO<0>'<5> mer eller mindre virus enn 10 LD5Q smitten, tjente som en kontroll på graden av smitte for å sikre at modellen virket viktig. Groups of 20 female mice (15-17 g) were infected intraperitoneally using 0.2 ml of EMEM containing 10 LC 0 /mouse of virus. Mice infected with IO<0>'<5> more or less virus than the 10 LD5Q infection served as a control on the degree of infection to ensure that the model appeared important.

Behandling med prøveforbindelsen begynte 6 timer efter smitte. Musene, oppdelt i grupper på 20, fikk administrert forbindelsen Treatment with the test compound began 6 hours after infection. The mice, divided into groups of 20, were administered the compound

i saltvann subkutant i en mengde på 5 mg/kg, 10 mg/kg og 20 mg/kg. En gruppe på 20 mus ble anvendt som kontrollgruppe og fikk administrert saltoppløsning subkutant. Behandlingen ble gjentatt 24, 48, 72 og 96 timer efter smitte. in saline subcutaneously in an amount of 5 mg/kg, 10 mg/kg and 20 mg/kg. A group of 20 mice was used as a control group and was administered saline subcutaneously. The treatment was repeated 24, 48, 72 and 96 hours after infection.

Prøveforbindelsene var forbindelsen med formel I og de tre forbindelser beskrevet i US-patent 4 199 574 som er strukturelt nærmest forbindelsen med formel I. The test compounds were the compound of formula I and the three compounds described in US patent 4,199,574 which are structurally closest to the compound of formula I.

Av de ovenstående resultater fremgår det at en sammenligning mellom antall overlevende dyr som har fått forbindelsen med formel I og antall overlevende dyr som har fått de tre tidligere kjente forbindelser, klart viser at forbindelsen med formel I har den beste anti-virus-aktivitet. From the above results, it appears that a comparison between the number of surviving animals that have received the compound of formula I and the number of surviving animals that have received the three previously known compounds clearly shows that the compound of formula I has the best anti-virus activity.

Claims (1)

Analogifremgangsmåte for fremstilling av den terapeutisk aktive forbindelse 9-(1,3-dihydroksy-2-propoksymetyl)guanin, karakterisert ved at natriumsaltet av 9-(1,3-dihydroksy-2-propoksymetyl)guanin omdannes til den frie forbindelse.Analogous process for the production of the therapeutically active compound 9-(1,3-dihydroxy-2-propoxymethyl)guanine, characterized in that the sodium salt of 9-(1,3-dihydroxy-2-propoxymethyl)guanine is converted to the free compound.
NO890477A 1981-05-21 1989-02-06 ANALOGY PROCEDURE FOR THE PREPARATION OF THE SODIUM SALT 9- (1,2-DIHYDROXY-2-PROPOXYMETHYL) GUANINE. NO165026C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NO890477A NO165026C (en) 1981-05-21 1989-02-06 ANALOGY PROCEDURE FOR THE PREPARATION OF THE SODIUM SALT 9- (1,2-DIHYDROXY-2-PROPOXYMETHYL) GUANINE.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US06267210 US4355032B2 (en) 1981-05-21 1981-05-21 9-(1,3-dihydroxy-2-propoxymethyl)guanine as antiviral agent
NO821676A NO161740C (en) 1981-05-21 1982-05-19 ANALOGY PROCEDURE FOR THE PREPARATION OF THERAPEUTIC ACTIVE 9- (1,3-DIHYDROXY-2-PROPOXYMETHYL) GUANINE.
NO890477A NO165026C (en) 1981-05-21 1989-02-06 ANALOGY PROCEDURE FOR THE PREPARATION OF THE SODIUM SALT 9- (1,2-DIHYDROXY-2-PROPOXYMETHYL) GUANINE.

Publications (4)

Publication Number Publication Date
NO890477L NO890477L (en) 1982-11-22
NO890477D0 NO890477D0 (en) 1989-02-06
NO165026B true NO165026B (en) 1990-09-03
NO165026C NO165026C (en) 1990-12-12

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NO890477A NO165026C (en) 1981-05-21 1989-02-06 ANALOGY PROCEDURE FOR THE PREPARATION OF THE SODIUM SALT 9- (1,2-DIHYDROXY-2-PROPOXYMETHYL) GUANINE.

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NO165026C (en) 1990-12-12
NO890477L (en) 1982-11-22
NO890477D0 (en) 1989-02-06

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