NO335866B1 - Karbonatforbindelse - Google Patents

Karbonatforbindelse Download PDF

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NO335866B1
NO335866B1 NO20110598A NO20110598A NO335866B1 NO 335866 B1 NO335866 B1 NO 335866B1 NO 20110598 A NO20110598 A NO 20110598A NO 20110598 A NO20110598 A NO 20110598A NO 335866 B1 NO335866 B1 NO 335866B1
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general formula
group
hydrogen atom
mmol
alkyl
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NO20110598L (no
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Christian Hoornaert
Gihad Dargazanli
Florence Medaisko
Ahmed Abouabdellah
Michèle Bas
Adrien Tak Li
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Sanofi Aventis
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Publication of NO335866B1 publication Critical patent/NO335866B1/no

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Abstract

Oppfinnelsen vedrører en forbindelse med generelle formel (III) hvori R2 representerer en gruppe med generell formel CHR3CONHR4 hvori R3 representerer et hydrogenatom eller en metylgruppe og R4 representerer et hydrogenatom eller en (C1-C3) alkyl-, (C3-C5) cykloalkyl- eller (pyridin-4-yl) metylgruppe, og U representerer et hydrogenatom eller en nitrogruppe.

Description

Den foreliggende oppfinnelse angår en forbindelse som tilsvarer generell formel (III)
hvori
R.2 representerer en gruppe med generell formel CHR3CONHR4hvori R3representerer et hydrogenatom eller en metylgruppe, og
R4representerer et hydrogenatom eller en (C1-C3)alkyl-, (C3-C5) cykloalkyl- eller (pyridin-4-yl)metylgruppe, og U representerer et hydrogenatom eller en nitrogruppe.
Forbindelsene med den generelle formel (III) kan for eksempel anvendes som mellomprodukter for fremstilling av forbindelsene med den generelle formel (I)
hvori
Ri representerer en fenyl- eller naftalenylgruppe eventuelt substituert med ett eller flere halogenatomer eller hydroksyl-, cyano-, nitro-, (C1-C3)alkyl-, (Ci-C3)alkoksy-, trifluormetyl-, trifluormetoksy-, benzyloksy-, (C3-C6) cykloalkyl-O- eller (C3-C6) cykloalkyl (C1-C3) - alkoksygrupper,
R2representerer
enten en gruppe med generell formel CHR3CONHR4hvori R3representerer et hydrogenatom eller en metylgruppe og R4representerer et hydrogenatom eller en (C1-C3)alkyl-,
(C3-C5) cykloalkyl- eller (pyridin-4-yl)metylgruppe,
eller en 2,2,2-trifluoretylgruppe,
eller en (imidazol-2-yl)metylgruppe,
eller en (benzimidazol-2-yl)metylgruppe,
eller en fenylgruppe eventuelt substituert med ett eller flere halogenatomer eller cyano-, nitro-, (C1-C3) alkyl-, (C1-C3) alkoksy-, trifluormetyl- eller
trifluormetoksygrupper, og
n representerer et tall som varierer fra 1 til 3.
Forbindelsene med generell formel (I) kan omfatte ett eller flere asymmetriske karboner. De kan eksistere i form av enantiomerer eller diastereoisomerer. Forbindelsene med generell formel (I) kan også eksistere i form av cis- eller trans-stereoisomerer. Disse enantiomerer, diastereoisomerer og stereoisomerer kan også eksistere i form av deres blandinger, inkluderende de racemiske blandinger.
Forbindelsene med formel (I) kan eksistere i form av baser eller addisjonssalter med syrer.
Disse saltene er fordelaktige fremstilt med farmasøytisk akseptable syrer, men saltene av andre syrer kan anvendes, f.eks. for rensing eller isolering av forbindelsene med formel (I). Forbindelsene med generell formel (I) kan være i form av hydrater eller solvater, nemlig i form av assosiasjoner eller kombinasjoner med ett eller flere vannmolekyler eller med et løsningsmid-del.
I denne beskrivelse er:
- uttrykket " (Ct-Cz) hvor t og z kan ha verdiene 1 til 6" ment å bety en karbonkjede som kan ha fra t til z karbonatomer, f.eks. er " (C1-C3) " ment å bety en
karbonkjede som kan ha fra 1 til 3 karbonatomer, betegnelsen "alkyl" er ment å bety en rettkjedet eller forgrenet, mettet alifatisk gruppe; f.eks. representerer en (C1-C3)alkylgruppe en rettkjedet eller forgrenet karbonkjede med 1 til 3 karbonatomer,
mer spesielt et metyl, etyl, propyl eller isopropyl, betegnelsen "cykloalkyl" er ment å bety en cyklisk alkylgruppe; f.eks. representerer en (C3-C5)cykloalkylgruppe en cyklisk karbonkjede med 3 til 5 karbonatomer, mer spesielt et cyklopropyl, cyklobutyl
eller cyklopentyl,
betegnelsen "alkoksy" er ment å bety en alkyloksygruppe inneholdende en rettkjedet eller
forgrenet, mettet alifatisk kjede,
betegnelsen "halogenatom" er ment å bety et fluor, et
klor, et brom eller et jod.
En metode for fremstilling av forbindelsene med generell formel (I)(Skjema 1) består således i å reagere et amin med generell formel (II), hvori Ri og n er som definert i generell formel (I), med et karbonat med generell formel (III), hvori U representerer et hydrogenatom eller en nitrogruppe og R2er som definert i generell formel (III) som nevnt ovenfor, i et løsningsmiddel slik som toluen eller dikloretan, ved en temperatur mellom 0 og 80°C. Karbonatene med generell formel (III) kan fremstilles i samsvar med en hvilken som helst metode beskrevet i litteraturen, f.eks. ved å reagere en alkohol med generell formel HOR2med fenyl- eller 4-nitrofenylklorformiat, i nærvær av en base slik som trietylamin eller diisopropyletylamin.
Aminene med generell formel (II) kan fremstilles i samsvar med metodene for fremstilling som er beskrevet i patentsøknadene EP 0461958, WO 97/20836 og WO 98/55474, eventuelt tilpasset i samsvar med teknikker som er kjent for de fagkyndige i teknikken.
De etterfølgende eksempler illustrerer fremstillingen av noen forbindelser i henhold til oppfinnelsen. Mikroana-lysene, IR- og NMR-spektrene og/eller LC-MS
(væskekromatografi koblet til massespektroskopi)
bekrefter strukturene og renhetene til de oppnådde forbindelser.
Eksempel 1
lff-imidazol-2-ylmetyl- trans- 3- [5- (6-metoksynaftalen-1-yl) -1, 3-dioksan-2-yl]propylkarbamat
1.1 Fenyl - (1-trif enylmetyl-lJf-imidazol-2-yl)metylkarbonat
Ved å gå ut fra 3 g (8,80 mmol) 1-trifenylmetyl-lff-imidazol-2-metanol (J. Het. Chem., (1995), 32, 903-906) og 1,1 ml (8,80 mmol) fenyl-klorformiat, oppnås 3,9 g produkt, som anvendes umodifisert i det etterfølgende trinn.
1. 2 (1-trif enylmetyl-lff-imidazol-2-yl) metyl- trans- 3- [5-(6-metoksynaftalen-1-yl)-1,3-dioksan-2-yl]propylkarbamat
Ved å gå ut fra 2,5 g (8,28 mmol) trans-3-[5-(6-metoksynaftalen-l-yl)-1,3-dioksan-2-yl]propanamin og 3,8 g (8,28 mmol) fenyl-(1-trifenylmetyl-lff-imidazol-2-yl)metylkarbonat, oppnådd i trinn 1.1, oppnås 3,2 g av et faststoff i amorf form.
1. 3 lff-imidazol-2-ylmetyl- trans- 3- [5- ( 6-metoksynaf talen-l-yl) -1, 3-dioksan-2-yl]propylkarbamat
En oppløsning av 0,6 ml (2,83 mmol) trifluoreddiksyre i 2 ml diklormetan tilsettes, dråpevis, ved omgivelsestemperatur til en oppløsning av 1,9 g (2,83 mmol) (1-trifenylmetyl-lff-imidazol-2-yl) metyl- trans- 3- [5- (6-metoksynaftalen-l-yl)-1,3-dioksan-2-yl]propylkarbamat, oppnådd i trinn 1.2, i 150 ml diklormetan, og blandingen omrøres ved omgivelsestemperatur i 12 timer. Konsentrering utføres under redusert trykk, resten
tas opp med diklormetan og en mettet vandig natriumhydrogenkarbonatoppløsning, den organiske fase separeres, vaskes med en mettet vandig natriumklorid-oppløsning og tørkes over natriumsulfat, konsentrering utføres under redusert trykk, og resten renses ved kromatografi på silikagel, ved eluering med en 98/2/0,2 blanding av diklormetan, metanol og vandig ammoniakk. Etter rekrystallisering fra etylacetat, oppnås til sist 0,820 g rent produkt.
Smeltepunkt: 130-132°C.
<1>H NMR: (CDC13) 8 (ppm) 10.0 (bred m, 1H) ; 8.10 (d,
1H); 7.65 (d, 1H); 7.35 {dd, 1H); 7.25 (d, 1H); 7.15
(dd, 1H); 7.05 (dd, 1H); 7.00 (s, 2H); 5.15 (m+s, 3H) ;
4.70 (t, 1H); 4.30 (m, 2H); 3.95-3.90 (m, 6H); 3.30 (m, 2H); 1.85 (m, 4H).
Eksempel 2
2,2,2-trifluoretyl-trans-3-[5-(6-cyklopropyl-metoksynaftalen-l-yl)-1,3-dioksan-2-yl]propylkarbamat
0,075 ml (1,01 mmol) 2,2,2-trifluoretanol tilsettes, dråpevis og ved omgivelsestemperatur, til en suspensjon av 0,205 g (1,01 mmol) 4-nitrofenylklorformiat og 0,555 g (2,02 mmol) W,N-diisopropylaminoetylpolystyren (Ps-DIEA, 2% DVB, titer = 3,66 mmol/g) i 7,1 ml diklormetan. Blandingen omrøres med orbitalrysting og ved omgivelsestemperatur i 16 timer. Harpiksen filtreres gjennom en patron utstyrt med en sintret glasstrakt og skylling utføres med 4 ml diklormetan. Filtratet konsentreres under redusert trykk og den således oppnådde oljeaktige rest tas opp i 3,5 ml 1,2-dikloretan. 0,134 ml (0,78 mmol) W,N-diisopropyletylamin og 0,205 g (0,6 mmol) 3-[5-(6-cyklopropylmetoksynaftalen-l-yl)-1,3-dioksan-2-yl]propylamin tilsettes i rekkefølge. Denne reaksjonsblandingen oppvarmes ved 60°C i 16 timer. Etter avkjøling utføres vasking med 20 ml av en IN natriumhydroksydoppløsning. Fasene separeres og den organiske fasen filtreres gjennom en hydrofob sintret glasstrakt. Filtratet konsentreres under redusert trykk og resten renses ved kromatografi på silikagel, ved eluering med en 80/20 blanding av cykloheksan og etylacetat. Etter vasking i 5 ml diisopropyleter oppnås 0,076 g hvitt faststoff.
LC-MS: M+H = 468
Smeltepunkt: 105-107°C
XH NMR: (CDCI3) 6 (ppm) : 8.15 (d, 1H) ; 7.65 (d, 1H).;
7.35 (dd, 1H); 7.25 (m, 1H); 7.15 (d, 1H); 7.10 (d,
1H)'; 5.15 (bred m, 1H); 4.75 (t, 1H); 4.50 (q, 2H) ; 4.30 (dd, 2H); 4.10-3.80 (m, 5H); 3.40-3.20 (m, 2H);
1.90-1.65 (m, 4H); 1.45-1.20 (m, 1H); 0.75-0.60 (m, 2H); 0.50-0.35 (2H).

Claims (1)

1. Forbindelse, karakterisert vedat den tilsvarer generell formel (III)
hvori
R.2representerer en gruppe med generell formel CHR3CONHR4hvori R3representerer et hydrogenatom eller en metylgruppe, og R4representerer et hydrogenatom eller en (C1-C3)alkyl-, (C3-C5)cykloalkyl- eller (pyridin-4-yl)metylgruppe, og U representerer et hydrogenatom eller en nitrogruppe.
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