CH378894A - Process for the preparation of purine derivatives - Google Patents
Process for the preparation of purine derivativesInfo
- Publication number
- CH378894A CH378894A CH1502963A CH1502963A CH378894A CH 378894 A CH378894 A CH 378894A CH 1502963 A CH1502963 A CH 1502963A CH 1502963 A CH1502963 A CH 1502963A CH 378894 A CH378894 A CH 378894A
- Authority
- CH
- Switzerland
- Prior art keywords
- radicals
- group
- formula
- optionally substituted
- substituted
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 10
- 229940083251 peripheral vasodilators purine derivative Drugs 0.000 title claims description 7
- 238000002360 preparation method Methods 0.000 title description 3
- 125000000561 purinyl group Chemical class N1=C(N=C2N=CNC2=C1)* 0.000 title 1
- 150000003212 purines Chemical class 0.000 claims description 9
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 125000005842 heteroatom Chemical group 0.000 claims description 6
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 5
- 229910052736 halogen Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- 125000002795 guanidino group Chemical group C(N)(=N)N* 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 4
- 239000003085 diluting agent Substances 0.000 claims description 3
- 125000005843 halogen group Chemical group 0.000 claims description 3
- 125000000717 hydrazino group Chemical group [H]N([*])N([H])[H] 0.000 claims description 3
- 150000003512 tertiary amines Chemical class 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims description 2
- 150000008041 alkali metal carbonates Chemical class 0.000 claims description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 125000003277 amino group Chemical group 0.000 claims description 2
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 125000001424 substituent group Chemical group 0.000 claims description 2
- 125000000547 substituted alkyl group Chemical group 0.000 claims description 2
- 125000004149 thio group Chemical group *S* 0.000 claims description 2
- RRAYVESVMOMOEM-UHFFFAOYSA-N 7-methylpurine Chemical compound C1=NC=C2N(C)C=NC2=N1 RRAYVESVMOMOEM-UHFFFAOYSA-N 0.000 claims 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims 1
- 125000004429 atom Chemical group 0.000 claims 1
- 239000000872 buffer Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000008096 xylene Substances 0.000 claims 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- RWISCQXOYVZAPA-UHFFFAOYSA-N ClC1=NC(=C2N(C(=NC2=N1)N1CCOCC1)C)N1CCOCC1 Chemical compound ClC1=NC(=C2N(C(=NC2=N1)N1CCOCC1)C)N1CCOCC1 RWISCQXOYVZAPA-UHFFFAOYSA-N 0.000 description 7
- RMVRSNDYEFQCLF-UHFFFAOYSA-N thiophenol Chemical compound SC1=CC=CC=C1 RMVRSNDYEFQCLF-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- BCBCBEDHRKTEIE-UHFFFAOYSA-N O(C1=CC=CC=C1)C1=NC(=C2N(C(=NC2=N1)N1CCOCC1)C)N1CCOCC1 Chemical compound O(C1=CC=CC=C1)C1=NC(=C2N(C(=NC2=N1)N1CCOCC1)C)N1CCOCC1 BCBCBEDHRKTEIE-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000000202 analgesic effect Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- UJPVCLWTEGDJOJ-UHFFFAOYSA-N (2-chloro-7-methyl-8-morpholin-4-ylpurin-6-yl)hydrazine Chemical compound ClC1=NC(=C2N(C(=NC2=N1)N1CCOCC1)C)NN UJPVCLWTEGDJOJ-UHFFFAOYSA-N 0.000 description 1
- GWCLTOUBYJGWSF-UHFFFAOYSA-N 4-(2-ethylsulfanyl-7-methyl-6-morpholin-4-ylpurin-8-yl)morpholine Chemical compound C(C)SC1=NC(=C2N(C(=NC2=N1)N1CCOCC1)C)N1CCOCC1 GWCLTOUBYJGWSF-UHFFFAOYSA-N 0.000 description 1
- XVMSFILGAMDHEY-UHFFFAOYSA-N 6-(4-aminophenyl)sulfonylpyridin-3-amine Chemical compound C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=N1 XVMSFILGAMDHEY-UHFFFAOYSA-N 0.000 description 1
- KHQFFPBRJPROAC-UHFFFAOYSA-N C1(=CC=CC=C1)SC1=NC(=C2N(C(=NC2=N1)N1CCOCC1)C)N1CCOCC1 Chemical compound C1(=CC=CC=C1)SC1=NC(=C2N(C(=NC2=N1)N1CCOCC1)C)N1CCOCC1 KHQFFPBRJPROAC-UHFFFAOYSA-N 0.000 description 1
- NBMKCZNPCHMQBW-UHFFFAOYSA-N ClC1=NC(=C2N(C(=NC2=N1)N1CCCCC1)C)N1CCCCC1 Chemical compound ClC1=NC(=C2N(C(=NC2=N1)N1CCCCC1)C)N1CCCCC1 NBMKCZNPCHMQBW-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- WPUJEWVVTKLMQI-UHFFFAOYSA-N benzene;ethoxyethane Chemical compound CCOCC.C1=CC=CC=C1 WPUJEWVVTKLMQI-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 235000020075 ouzo Nutrition 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 230000001624 sedative effect Effects 0.000 description 1
- QJDUDPQVDAASMV-UHFFFAOYSA-M sodium;ethanethiolate Chemical compound [Na+].CC[S-] QJDUDPQVDAASMV-UHFFFAOYSA-M 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 150000003566 thiocarboxylic acids Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/02—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
- C07D473/24—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 one nitrogen and one sulfur atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/02—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
- C07D473/18—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 one oxygen and one nitrogen atom, e.g. guanine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Verfahren zur Herstellung von Purinderivaten
Es sind bisher nur sehr wenige Purinderivate bekannt, die zwei substituierte Aminogruppen im Kern enthalten. Sie werden teils durch Halogenaustausch (z. B. 2, 6-Dialkylammoalkylamino-dialkylaminopurine, Journ. Amer. Chem. Soc., Band 67, 1945, Seite 1271) teils durch Chlorierung in Gegenwart tertiärer Amine (z. B. 2, 6-bis-Dialkylamino-purine, Journ. Amer. Chem. Soc., Band 74, 1952, Seite 3624) erhalten.
Die vorliegende Erfindung betrifft mm ein Verfahren zur Herstellung von Purinderivaten der Formel
EMI1.1
worin R'Wasserstoff oder eine gogebenenfalls substituierte Alkyl-, Aralkyl-oder Arylgruppe, einer der Substituenten R1-R3 ein: Stickstoffatom, das Glied eines gegebenenfalls durch ein weiteres Heteroatom unterbrochenen Ringes ist, ein weiterer der Reste R-R3 eine substituierte Aminogruppe, ein Stickstoff- atom,'das Glied eines gegebenenfalls durch ein weiteres Heteroatom unterbrochenen Ringes ist, oder eine gegebenenfalls substituierte Hydrazino-oder Guanidinogruppe u, nd der dritte der Reste Rt-R3 eine freie oder substituierte Hydroxyl- oder Thiogruppe bedeuten, dadurch gekennzeichnet,
dass man halogenhaltige Purine der Formel z
Z2 N N N
N Z3 bzw. Z1-Z3 7!'-'"kA/
N NN K worin einer der Reste Z1-Z3 ein Halogenatom, 1-2 der Reste Z-Z3 ein Stickstoffatom, das Glied eines gegebenenfalls durch ein weiteres Heteroatom unterbrochenen Ringes ist, 0-1 der Reste Z-Z3 eine primäre oder sekundäre Aminogruppe oder eine gegebenenfalls substituierte Guanidino-oder Hydrazmogruppe bedeuten, mit Verbindungen der Formel H-R worin R eine gegebenenfalls substituierte OH-oder SH-Gruppe bedeutet, in Anwesenheit eines saurebindenden Mittels bei Temperaturen von -20 bis +250¯C, gegebenenfalls unter Druck, umsetzt.
Als Beispiele f r bei dem erfindungsgemässen Verfahren als Ausgangsstoffe verwendbare halogenhaltige Purine seien genannt : 2-Chlor-6, 8-dipiperidino-7-methyl-purin und 2-Chlor-6-hydrazino-8-morpholino-7-methylpurin.
Zu den f r die Umsetzung mit den halogenhal- tigen Purinen geeigneten Verbindungen der Formel HR gehören beispielsweise folgende : gegebenenfalls substituierte Alkohole, Phenole, Mercaptane, Thiocarbonsäuren und Thiophenole.
Es wird unter Zusatz eines säurebindenden Mit- tels, z. B. eines Alkalihydroxyds, Alkalicarbonats, Alkalialkoholats oder tertiaren Amins, gegebenenfalls unter Verwendung eines Überschusses der Verbin- dung H-R, wenn diese sich als säurebindendes Mittel eignet, gearbeitet.
Die Umsetzung kann in Ab-oder Anwesenheit von Lösungs-bzw. Verdünnungsmitteln durchgeführt werden. Vorzugsweise wird sie jedoch in an der Um- setzung nicht teilnehmenden Lösungsmitteln, z. B.
Aceton, Dioxan, Benzol und Dimefhylformamid, durchgeführt. Wenn der Siedepunkt des verwendeten Lösungsmittels den durch einfachen Vorversuch zu ermittelnden,fürdenAblaufderUmsetzunggünstig- sten Temperaturbereich nicht erreichen lässt, kann unter Druck gearbeitet werden.
Es kann die Verbindung der Formel H-R, falls sie unter den Reaktionsbedingungen flüssig ist, im ¯berschu¯ als Lösungs-oder Verdünnungsmittel Verwendung finden.
Die nach dem erfindungsgemässen Verfahren erhältlichen neuen Purindaerivate sowie ihre in Wasser leicht löslichen Salze zeigen sehr wertvolle, grösstenteils bei Purinderivaten völlig unerwartete, pharma kologische Eigenschaften, beispielsweise wirken sie coronarerweiternd, analgetilsch und sedativ.
Das 2-¯thylthio-6,8- dimorpholino-7-methylpurin weist sehr gute analgetische Wirkungen auf.
Beispiel 1
2-¯thylthio-6,8-dimorpholino-7-methyl-purin aus 2-Chlor-6, 8-dimorpholino-7-methylpurin und Athyhnercaptan
6, 8 g (0, 02 Mol) 2-Chlor-6, 8-dimorpholino-7methylpurin in 30 cm3 Dioxan werden mit einer Suspension von Natriumäthylmercaptid in Dioxan (aus 15 cm3 Athylmorcaptan und 0, 6 g Natrium in n
15 cm3 Dioxan) im Bombenrohr etwa 45 Minuten lang auf 200 erhitzt. Nach dem Erkalten wird das Reaktionsgemisoh mit etwa 100 cm3 Athanol aus dem Rohr r gespült und das teilweise ungel¯ste 2-Athylthio-6, 8-dimorpholino-7-methylpurin abgesaugt. Ein beträchtlicher Teil kann jedoch erst nach Eindampfen der Mutterlauge isoliert werden.
Gesamt- ausbeute 6, 8 g (93 ouzo d. Th.). Zur Reinigung wird die Substanz zweimal aus 1, 5-2 Liter sehr verdünnter Salzsäure umgefäillt : farblose, mikrokristalline, flache Prismen, F = 188-190 .
C16H24O2N6S (364, 5) ber. : C 52, 72 H 6, 64 gef. : 52, 70 6, 64
Beispiel 2
2- (¯-¯thoxyÏthoxy)-6,8-dimorpholino-7-methylpurin aus 2-Chlor-6, 8-dimorpholino-7-methylpurin und Athylglykol
6, 8 g (0, 02 Mol) 2-Chlor-6, 8-dimorpholino-7- methylputin werden mit einer Lösung von 0, 5 g (0, 022 Mol) Natrium in 75 cm3 Athylglycol 11/2 Stun- den lang am Rückfluss gekocht. Nach teilweisem Abdestillieren des Alkohols wird der Rückstand in 250 cm3 Wasser gegossen, wobei das Reaktionspro- dukt als nahezu farbloser Niederschlag ausfällt. Nach Absaugen, Waschen un, d Trocknen beträgt die Aus boute 4, 8 g (61 /o d. Th.).
Zur Reinigung wird die Substanz zweimal aus Petroläther-Benzol (3 : 1) umkristallisiert : fast farblose, mikrokristalline Prismen, F = 134-136 .
Beispiel 3
2-Phenylthio-6, 8-dimorpholino-7-methylpurin aus 2-Chlor-6,8-dimorpholno-7-methylpurin und Thiophenol
5, 1 g (0, 015 Mol) 2-Chlor-6, 8-dimorpholino-7methylpurin werden mit 5 cm3 (etwa 0, 05 Mol) Thiophenoll und 2 cm3 Pyridin in 50 cm3 Dimethylformamid 11/2 Stunden lang am Rückfluss erhitzt. Das nach Abdampfen des Lösungsmittels (im Vakuum) zur ckbleibende rohe, ölige Reaktionsprodukt wird zunächst mit 80 cm3 ln-Ammoniak (noch schmierige, graugrüne Masse) und dann mit 50 cm3 Methanol digeriert. Die so erhaltene fast farblose Substanz wird abgesaugt und bei Zimmertemperatur im Vakuum getrocknet : 4, 4 g (71' /o d. Th.).
Zur Analyse wird zweimal aus sehr verdünnter Schwefelsäure umgefällt und zweimal aus Methanol (etwa 70 cm3) umkristallisiert : farbloses mikrokristallines Pulver (Nä delchen) F = 100-102 .
C20H2402N6S (412, 5) ber. : C 58, 23 H 5, 87 gef. : 57, 87 6, 13
Beispiel 4
2-Phenoxy-6, 8-dimorpholino-7-methylpurin aus 2-Chlor-6, 8-dimorpholino-7-methylpurin und Phenol
In eine auf 60 erwärmte Schmelze aus 15 cm3 Phenol und 1 g Natriumhydroxyd werden 6, 8 g (0, 02 Mol) 2-Chlor-6, 8 dimorpholino-7-methylpurin eingetragen und anschliessend wird 10 Minuten lang auf 2000 erwärmt. Beim Aufnehmen des Reaktions- gemisches in etwa 250 cm3 verdünntem Ammoniak scheidet sich das 2-Phenoxy-6, 8-dimorpholino-7- methylpurin zunächst als öliger, jedoch bald erstar- render Niederschlag ab.
Nach Absaugen, Waschen und Trocknen betrÏgt die Ausbeute 6, 9 g (87 O/o der Theorie). Nach dreimaligem UmfÏllen aus sehr verdünnter Schwefelsäure und einmaligem Umkristalli- sieren aus Methanol : farbloses mikrokristallines Pulver, F = 192-194 .
C20H24O3N6 (396, 4) ber. : C 60, 59 H 6, 10 gef. : 60, 82 6, 16
Process for the preparation of purine derivatives
So far, only very few purine derivatives are known which contain two substituted amino groups in the core. They are partly by halogen exchange (e.g. 2,6-dialkylammoalkylamino-dialkylaminopurine, Journ. Amer. Chem. Soc., Volume 67, 1945, page 1271) partly by chlorination in the presence of tertiary amines (e.g. 2, 6 -bis-Dialkylamino-purine, Journ. Amer. Chem. Soc., Volume 74, 1952, page 3624).
The present invention relates to a process for the preparation of purine derivatives of the formula
EMI1.1
wherein R 'is hydrogen or an optionally substituted alkyl, aralkyl or aryl group, one of the substituents R1-R3 is a nitrogen atom, the member of a ring which is optionally interrupted by a further heteroatom, another of the radicals R-R3 is a substituted amino group Nitrogen atom, 'is the member of a ring which is optionally interrupted by a further heteroatom, or an optionally substituted hydrazino or guanidino group and the third of the radicals Rt-R3 is a free or substituted hydroxyl or thio group, characterized in that
that one halogen-containing purines of the formula z
Z2 N N N
N Z3 or Z1-Z3 7! '-' "kA /
N NN K wherein one of the radicals Z1-Z3 is a halogen atom, 1-2 of the radicals Z-Z3 is a nitrogen atom, the member of a ring optionally interrupted by a further heteroatom, 0-1 of the radicals Z-Z3 is a primary or secondary amino group or is an optionally substituted guanidino or hydrazmo group, with compounds of the formula HR in which R is an optionally substituted OH or SH group, in the presence of an acid-binding agent at temperatures from -20 to + 250 ° C, optionally under pressure.
Examples of halogen-containing purines which can be used as starting materials in the process according to the invention are: 2-chloro-6, 8-dipiperidino-7-methyl-purine and 2-chloro-6-hydrazino-8-morpholino-7-methylpurine.
The compounds of the formula HR suitable for reaction with the halogen-containing purines include, for example, the following: unsubstituted or substituted alcohols, phenols, mercaptans, thiocarboxylic acids and thiophenols.
It is with the addition of an acid-binding agent such. B. an alkali metal hydroxide, alkali metal carbonate, alkali metal alcoholate or tertiary amine, optionally using an excess of the compound H-R, if this is suitable as an acid-binding agent, worked.
The implementation can be in the absence or presence of solution or. Diluents are carried out. However, it is preferably used in solvents which do not participate in the reaction, e.g. B.
Acetone, dioxane, benzene and dimefhylformamide. If the boiling point of the solvent used does not allow the temperature range to be determined by simple preliminary tests to be reached, which is the most favorable temperature range for the reaction, work can be carried out under pressure.
The compound of the formula H-R, if it is liquid under the reaction conditions, can be used in excess as a solvent or diluent.
The new purine derivatives obtainable by the process according to the invention and their salts which are readily soluble in water show very valuable, for the most part completely unexpected, pharmacological properties in the case of purine derivatives, for example they have a coronary, analgesic and sedative effect.
The 2-¯thylthio-6,8-dimorpholino-7-methylpurine has very good analgesic effects.
example 1
2-¯thylthio-6,8-dimorpholino-7-methyl-purine from 2-chloro-6, 8-dimorpholino-7-methylpurine and Athyhnercaptan
6.8 g (0.02 mol) of 2-chloro-6, 8-dimorpholino-7methylpurine in 30 cm3 of dioxane are mixed with a suspension of sodium ethyl mercaptide in dioxane (from 15 cm3 of ethylmorcaptan and 0.6 g of sodium in n
15 cm3 dioxane) heated to 200 in the bomb tube for about 45 minutes. After cooling, the reaction mixture is rinsed out of the tube with about 100 cm3 of ethanol and the partially undissolved 2-ethylthio-6, 8-dimorpholino-7-methylpurine is suctioned off. However, a considerable part can only be isolated after the mother liquor has been evaporated.
Total yield 6.8 g (93 ouzo of theory). For cleaning, the substance is reprecipitated twice from 1.5-2 liters of very dilute hydrochloric acid: colorless, microcrystalline, flat prisms, F = 188-190.
C16H24O2N6S (364, 5) calc.: C 52, 72 H 6, 64 found. : 52, 70 6, 64
Example 2
2- (¯-¯thoxyÏthoxy) -6,8-dimorpholino-7-methylpurine from 2-chloro-6, 8-dimorpholino-7-methylpurine and ethylglycol
6.8 g (0.02 mol) of 2-chloro-6, 8-dimorpholino-7-methylputin are treated with a solution of 0.5 g (0.022 mol) of sodium in 75 cm3 of ethylglycol for 11/2 hours boiled on reflux. After the alcohol has been partially distilled off, the residue is poured into 250 cm3 of water, the reaction product precipitating out as an almost colorless precipitate. After filtering off with suction, washing and drying, the yield is 4.8 g (61% of the theory).
For cleaning, the substance is recrystallized twice from petroleum ether-benzene (3: 1): almost colorless, microcrystalline prisms, F = 134-136.
Example 3
2-Phenylthio-6, 8-dimorpholino-7-methylpurine from 2-chloro-6,8-dimorpholino-7-methylpurine and thiophenol
5.1 g (0.015 mol) of 2-chloro-6, 8-dimorpholino-7methylpurine are refluxed with 5 cm3 (about 0.05 mol) of thiophenol and 2 cm3 of pyridine in 50 cm3 of dimethylformamide for 11/2 hours. The crude, oily reaction product that remains after the solvent has evaporated (in vacuo) is first digested with 80 cm3 of ln ammonia (still greasy, gray-green mass) and then with 50 cm3 of methanol. The almost colorless substance obtained in this way is filtered off with suction and dried in vacuo at room temperature: 4.4 g (71% of the theory).
For analysis, it is reprecipitated twice from very dilute sulfuric acid and recrystallized twice from methanol (approx. 70 cm3): colorless microcrystalline powder (needle) F = 100-102.
C20H2402N6S (412, 5) calc.: C 58, 23 H 5, 87 found. : 57, 87 6, 13
Example 4
2-Phenoxy-6, 8-dimorpholino-7-methylpurine from 2-chloro-6, 8-dimorpholino-7-methylpurine and phenol
6.8 g (0.02 mol) of 2-chloro-6, 8-dimorpholino-7-methylpurine are added to a melt of 15 cm3 of phenol and 1 g of sodium hydroxide heated to 60 and then heated to 2000 for 10 minutes. When the reaction mixture is taken up in about 250 cm3 of dilute ammonia, the 2-phenoxy-6, 8-dimorpholino-7-methylpurine initially separates out as an oily, but soon solidifying precipitate.
After filtering off with suction, washing and drying, the yield is 6.9 g (87% of theory). After three reprecipitation from very dilute sulfuric acid and one recrystallization from methanol: colorless microcrystalline powder, melting point 192-194.
C20H24O3N6 (396, 4) calc.: C 60, 59 H 6, 10 found. : 60, 82 6, 16
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1502963A CH378894A (en) | 1959-03-26 | 1959-03-26 | Process for the preparation of purine derivatives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1502963A CH378894A (en) | 1959-03-26 | 1959-03-26 | Process for the preparation of purine derivatives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH378894A true CH378894A (en) | 1964-06-30 |
Family
ID=4405711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1502963A CH378894A (en) | 1959-03-26 | 1959-03-26 | Process for the preparation of purine derivatives |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH378894A (en) |
-
1959
- 1959-03-26 CH CH1502963A patent/CH378894A/en unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CH409980A (en) | Process for the preparation of substituted 2-arylamino-1,3-diazacycloalkenes | |
| DE1116676B (en) | Process for the preparation of pyrimido [5, 4-d] pyrimidines | |
| CH365736A (en) | Process for the preparation of unsaturated 2-acyl-4-aminophenol ethers | |
| CH380746A (en) | Process for the preparation of new secondary amines | |
| CH378894A (en) | Process for the preparation of purine derivatives | |
| DE1795344A1 (en) | 3-amino-isothiazoles | |
| DE1795150C3 (en) | 2-alkyl-2,3-dihydrothieno square bracket to 3,2-c square bracket to quinolines, their pharmaceutically safe, non-toxic salts with acids and process for their preparation | |
| DE889447C (en) | Process for the preparation of the more divalent salts of 4-amino-6- (2'-aminopyrimidyl-4'-amino) -quinazoline | |
| DE1670478A1 (en) | Process for the preparation of derivatives of alpha-piperazino-phenylacetonitrile | |
| CH376929A (en) | Process for the preparation of pteridine derivatives | |
| DE1695117C3 (en) | Process for the preparation of chloramino-s-triazines | |
| DE833959C (en) | Process for the preparation of chemotherapeutically valuable biguanide derivatives | |
| AT206444B (en) | Process for the preparation of new pyridazine derivatives | |
| CH381235A (en) | Process for the preparation of purine derivatives | |
| DE1115260B (en) | Process for the preparation of purine derivatives | |
| DE822552C (en) | Process for the preparation of alkyl derivatives of diketooxazolidines | |
| DE1962261C3 (en) | Process for the preparation of 2,6-bis (diethanolamino) -4,8-dipiperidinopyrimido [5,4-d] pyrimidine | |
| AT209345B (en) | Process for the preparation of new pyrazolo-pyrimidines substituted in the pyrazole nucleus | |
| DE1670542B1 (en) | Substituted 2-anilino-4-morpholino-6-piperazino-s-triazines | |
| AT234691B (en) | Process for the preparation of new piperidine derivatives | |
| AT262269B (en) | Process for the preparation of new 1-phenly-2-alkylcyclohexyl-aminoethyl-ethers and their acid addition salts | |
| DE932127C (en) | Process for the preparation of new derivatives of pyrimidine | |
| AT274806B (en) | Process for the preparation of 1,3-diazacyclopentene- (2) substituted in the 2-position | |
| AT236944B (en) | Process for the preparation of substituted 2-arylamino-1,3-diazacycloalkenes | |
| AT162937B (en) | Process for the preparation of a new substituted 2,4-diamino-1,3,5-triazine |