DK149284B - Analogifremgangsmaade til fremstilling af l-lysylglycin-n-(2-benzoyl-4-chlorphenyl)-n-methylamid eller syreadditionssalte deraf samt forbindelser til anvendelse som udgangsforbindelser ved fremgangsmaaden - Google Patents
Analogifremgangsmaade til fremstilling af l-lysylglycin-n-(2-benzoyl-4-chlorphenyl)-n-methylamid eller syreadditionssalte deraf samt forbindelser til anvendelse som udgangsforbindelser ved fremgangsmaaden Download PDFInfo
- Publication number
- DK149284B DK149284B DK373975AA DK373975A DK149284B DK 149284 B DK149284 B DK 149284B DK 373975A A DK373975A A DK 373975AA DK 373975 A DK373975 A DK 373975A DK 149284 B DK149284 B DK 149284B
- Authority
- DK
- Denmark
- Prior art keywords
- acid
- benzoyl
- acid addition
- methylamide
- exceptions
- Prior art date
Links
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- 238000000034 method Methods 0.000 title claims description 23
- 150000003839 salts Chemical class 0.000 title claims description 22
- 238000002360 preparation method Methods 0.000 title claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 15
- -1 2-benzoyl-4-chlorophenyl Chemical group 0.000 claims description 8
- 239000012458 free base Substances 0.000 claims description 4
- 239000011253 protective coating Substances 0.000 claims 1
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- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 6
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- 238000004458 analytical method Methods 0.000 description 5
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- 238000003756 stirring Methods 0.000 description 5
- WPNMLCMTDCANOZ-UHFFFAOYSA-N [5-chloro-2-(methylamino)phenyl]-phenylmethanone Chemical compound CNC1=CC=C(Cl)C=C1C(=O)C1=CC=CC=C1 WPNMLCMTDCANOZ-UHFFFAOYSA-N 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
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- 229910000042 hydrogen bromide Inorganic materials 0.000 description 4
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- 150000008064 anhydrides Chemical class 0.000 description 3
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- HGNRJCINZYHNOU-LURJTMIESA-N Lys-Gly Chemical compound NCCCC[C@H](N)C(=O)NCC(O)=O HGNRJCINZYHNOU-LURJTMIESA-N 0.000 description 1
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- 125000000217 alkyl group Chemical group 0.000 description 1
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- 238000000053 physical method Methods 0.000 description 1
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- 125000004044 trifluoroacetyl group Chemical group FC(C(=O)*)(F)F 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
- C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
- C07D233/64—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms, e.g. histidine
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P21/00—Drugs for disorders of the muscular or neuromuscular system
- A61P21/02—Muscle relaxants, e.g. for tetanus or cramps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
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Description
i U9284 o
Den foreliggende opfindelse angår en analogi-fremgangsmåde til fremstilling af den hidtil ukendte forbindelse L-lysylglycin-N-(2-benzoyl-4-chlorphenyl)--N-methylamid eller hidtil ukendte syreadditionssalte 5 deraf, og opfindelsen angår endvidere hidtil ukendte forbindelser til anvendelse som udgangsmaterialer ved fremgangsmåden, nemlig de i krav 3's kendetegnende del med formlen (Ila) betegnede forbindelser.
Fremgangsmåden ifølge opfindelsen til fremstilling 10 af L-lysylglycin-N-(2-benzoyl-4-chlorphenyl)-N-methyl amid med formlen CH, NH, I J o 1 Å (<=Η2)4
Nsch»-nh-co-ch-nh0 rn 15 MÅ 2 (L) 2
Cl' \=0 6 20 eller syreadditionssalte deraf er ejendommelig ved, at man i overensstemmelse med i og for sig kendte metoder fraspalter de beskyttende grupper, der er til stede i en forbindelse med den almene formel
25 I
CH, NH-R1 I ^-0 » (?h2’4 Γ 11 ^CH -NH-CO-CH-NH-R2 ΧΛ (L)
Cl' c=o 30 » (II) o 1 2 i hvilken R og R hver betegner en amino-beskyttende gruppe, hvorpå man om ønsket omdanner den opnåede fri 35 base til et syreadditionssalt deraf eller omdanner et fremkommet syreadditionssalt til den frie base eller til et andet syreadditionssalt.
O
2 149284
Ifølge opfindelsen er det særlig hensigtsmæssigt, at der fremstilles L-lysylglycin-N-(2-benzoyl-4-chlorphe-nyl)-N-methylamid-dihydrochlorid, eftersom denne forbindelse i praksis er velegnet som virksom bestanddel i far-5 maceutiske præparater.
1 2
De amino-beskyttende grupper R og R i en forbindelse med formlen (II) kan være vilkårlige amino--beskyttende grupper, der er kendt inden for peptidkemien. Særligt egnede aminobeskyttelsesgrupper til den foreliggende 10 opfindelses formål er aralkoxycarbonylgrupper, navnlig benzyloxycarbonylgruppen, og tert.butoxycarbonylgruppen. Aminobeskyttelsesgrupperne kan imidlertid også være formyl-, trityl- eller trifluoracetylgrupper.
1 2
Fjernelsen af de amino-beskyttende grupper R og R 15 gennemføres ifølge i og for sig kendte metoder; dette betyder sådanne metoder, der er i aktuel anvendelse, eller som beskrives i litteraturen til fjernelse af beskyttelsesgrupper. Ifølge en foretrukken udførelsesform for den foreliggende fremgangsmåde er de amino-beskyttende 20 grupper sådanne, som kan fjernes ved hydrolyse. Således kan f.eks. en aralkoxycarbonylgruppe, f.eks. benzyloxy-carbonyl, eller en tertiær butoxycarbonylgruppe fraspaltes ved behandling med en blanding af hydrogen-bromid og eddikesyre. Den tertiære butoxycarbonyl-25 gruppe kan også fraspaltes ved behandling med hydrogen-chlorid i et organisk opløsningsmiddel, f.eks. dioxan, eller ved behandling med trifluoreddikesyre. En benzyloxycarbonyl- eller tert.butoxycarbonylgruppe kan også fraspaltes ved behandling med bortrichlorid 30 eller bortribromid i et indifferent organisk opløsningsmiddel, f.eks. dichlormethan.
Udgangsmaterialerne med den almene formel II, hvoraf som nævnt de, der har den i krav 3's kendetegnende del angivne almene formel (Ila), også er genstand for op-35 findelsen, kan fremstilles ved en række forskellige metoder.
14 92 8 Λ 3 ο Således opnås der f.eks. et udgangsmateriale med formlen II ved, at aminen med formlen 5 ?H3 N-CO-CH,-NH,
XX
Cl ' c=o 6 kondenseres med en på passende måde beskyttet aminosyre med den almene formel 15 1
R -NH
t (<TH2) 4 (IV) r2-nh-ch-cooh (L) 20 1 2 i hvilken R og R har den tidligere angivne betydning, eller med et reaktivt derivat deraf.
Kondensationen kan udføres ifølge i og for sig kendte metoder inden for peptidkemieh, f.eks. ifølge 25 den blandede anhydrid-, azid-, aktiverede ester- eller syrechloridmetode.
Ifølge én metode kan aminen med formlen III kondenseres med en på passende måde beskyttet aminosyre med formlen IV, i hvilken den endestillede carboxy-30 funktion foreligger i form af en blandet anhydridgruppe dannet med en organisk eller uorganisk syre.
Aminosyren, som bærer en fri carboxyfunktion, behandles hensigtsmæssigt med en tertiær base såsom en tri-(lavere 35 4 14928Λ
O
alkyl)-amin, f.eks. triethylarain, eller N-ethylmorpholin, i et indifferent organisk opløsningsmiddel, f.eks. tetra-hydrofuran, dichlormethan eller 1,2-dimethoxyethan, hvorefter det fremkomne salt ved en lav temperatur 5 omsættes med en chlormyresyreester, f.eks. ethyl- eller isobutylesteren. Det således fremkomne blandede anhydrid kondenseres derefter hensigtsmæssigt in situ med aminen med formlen III.
Ifølge en anden metode kan aminen med formlen III 10 kondenseres med en passende beskyttet aminosyre med formlen IV, hvori den endestillede carboxygruppe foreligger i form af et syreazid. Omsætningen gennemføres i et indifferent, organisk opløsningsmiddel, f.eks. dimethylformamid eller eddikeester ved en lav temperatur.
15 Ved en yderligere metode kan aminen med formlen III kondenseres med en passende beskyttet aminosyre med formlen IV, hvori den endestillede carboxyfunktion foreligger i form af en aktiv estergruppe, f.eks. p-nitro-phenyl-, 2,4,5-trichlorphenyl- eller N-hydroxysuccinimid-20 estergruppen. Denne kondensation gennemføres hensigts mæssigt ved ca. -20°C i et indifferent, organisk opløsningsmiddel, f.eks. dimethylformamid.
Ifølge en anden metode kan aminen med formlen III kondenseres med en passende beskyttet aminosyre med 25 formlen IV, hvori den endestillede carboxyfunktion foreligger som et syrechlorid. Denne kondensation gennemføres fortrinsvis i nærværelse af en base og ved en lav temperatur.
Alternativt kan udgangsmaterialerne med formlen 30 li fremstilles ved kondensation af forbindelsen med formlen ,3
NH
jOC (v> 35 Cl' C=0 o
O
5
U928A
med et passende beskyttet dipeptid med den almene formel R1-NH
(^2)4 5 r2-nh-ch-co-nh-ch0-cooh (VI) (L) 1 2 i hvilken R og R har den ovenfor angivne betydning, eller med et reaktivt derivat deraf, under anvendelse af en af de ovenfor beskrevne metoder i forbindelse med 10 kondensationen af aminen med formlen III' med en beskyttet aminosyre med formlen IV eller et reaktivt derivat deraf.
Aminen med formlen III kan f.eks. opnås ved kondensation af forbindelsen med formlen V med en 15 passende beskyttet glycin eller et reaktivt derivat og påfølgende fraspaltning af beskyttelsesgruppen på den ovenfor beskrevne måde.
L-Lysylglycin-N-(2-benzoyl-4-chlorphenyl)-N-methyl-amid med formlen I danner syreadditionssalte med uorganiske .
20 syrer, f.eks. hydrogenhalogenidsyrer, såsom saltsyre, hydro-genbromidsyre, svovlsyre, phosphorsyre og salpetersyre, og med organiske syrer, f.eks. eddikesyre, ravsyre, glycolsyre, mælkesyre, gluconsyre, vinsyre, citronsyre, maleinsyre, æblesyre, fumarsyre, methansulfonsyre, 25 paratoluensulfonsyre, oxalsyre, ascorbinsyre, benzoesyre, hydroxyethansulfonsyre og 1,2-diethansulfonsyre. De fremstillede syreadditionssalte er de farmaceutisk acceptable. Syreadditionssaltene kan fremstilles efter i og for sig kendte metoder, f.eks. ved behandling af basen med en egnet syre.
30 Et additionssalt kan også omdannes til et andet syreadditionssalt ved behandling med en egnet anionbytter, f.eks. Amber-lite®IRA-401 i chloridform.
L-Lysylglycin-N-(2-benzoyl-4-chlorphenyl)-N-methyl-amid med formlen I og syreadditionssaltene deraf har sedativ, 35 muskelafslappende og antikonvulsiv virkning.
6
14928A
O
Af særlig interesse er de farmaceutisk acceptable syreadditionssalte, der er vandopløselige, idet de let kan indgives ved injektion, f.eks. inden for tandlægevidenskaben til indledning af anæstesi og i 5 behandlingen af akutte konvulsive forstyrrelser samt .
ved Status epilepticus.
Fra USA-patentskrift nr. 3.455.985 og fra dansk patentansøgning nr. 4940/69 (fremlæggelsesskrift nr.
132.495) kendes der glycinamid-derivater med fri 10. a-aminogruppe, hvilke derivater har en struktur, der minder om den her omhandlede forbindelses struktur. Det L-lysyl-glycinamid-derivat, der fremstilles ved fremgangsmåden ifølge opfindelsen, udviser imidlertid i sammenligning med de fra de ovennævnte skrifter 15 kendte forbindelser overraskende nok væsentlige fordele, navnlig høj vandopløselighed for syreadditionssaltene, god aktivitet med hurtig indtræden af virkningen efter parenteral indgivelse samt god aktivitet såvel ved oral som ved parenteral indgivelse, jfr. den følgende tabel 20 med resultater af sammenligningsforsøg, hvor A er forbindelsen .ifølge eksempel 1, B er forbindelsen ifølge eksempel 68 i USA-patentskrift nr. 3.455.985, C er det tilsvarende methyl-derivat, og D og E er forbindelser, der falder ind under formlen for slutprodukterne ifølge 25 dansk patentansøgning nr. 4940/69.
7 149284
Tabel NRCOCH-NIIR1 X c=o ‘tr\
Test for muskelafslappende/antikonvulsiv aktivitet
Forbindelse X Y Z R R^ Test 1 Test 2 Test 3 Test 4 Vandoplø-
Antileptazol Hældende Roterende Antimetra- selighed ED^q mg/kg sigte stav zol PD50 mg/kg ED50 mg/kg ED50 mg/kg p.o.
p.o./i.v.
2,2 p.o. >25% A Cl Η H CH0 L-Lys 1,2 i.v. 51 p.o. 11 „ - .
3 J * 2,3 i.v.
B Cl Η Η Η H 11 p.o. - 5% C Cl Η H CH3 Η 1 i.p. - - - 5% D Cl Cl Cl CH H - 285 165 inaktiv i.p. 2% J (200 i.p.) E Cl Cl Cl Η H - inaktiv p.o. - 2% (500 p.o.) (i ethanol)
Test 1 og 4 er til hinanden - svarende tests udført under forskellige betingelser (Leptazols Metrazol).
O
8 149286 L-Lysylglycin-N-(2-benzoyl-4-chlorphenyl)-N-methyl-amid med formlen I og de farmaceutisk acceptable syreadditionssalte deraf kan anvendes som lægemidler, f.eks. i form af farmaceutiske præparater, som indeholder den nævn-5 té forbindelse eller et farmaceutisk acceptabelt syreadditionssalt deraf sammen med et farmaceutisk bæremateriale, der er foreneligt dermed. De farmaceutiske præparater kan være faste stoffer, f.eks. tabletter, dragées og kapsler, eller kan foreligge i flydende form, f.eks. som opløsnin-10 get, suspensioner eller emulsioner. Farmaceutiske præparater, som er tilpasset til injektionsformål, er de foretrukne.
De doser, i hvilke D-lysylglycin-N-(2-benzoyl-4--chlorphenyl)-N-methylamid med formlen I og dets farma-15 ceutisk acceptable syreadditionssalte kan indgives, kan varieres efter patientens behov og efter den behandlede læges ^retningslinier. En daglig dosis på fra ca. 0,01 mg/kg til ca. lmg/kg er imidlertid den foretrukne.
Fremgangsmåden ifølge opfindelsen illustreres i de 20 følgende eksempler.
Eksempel 1 (A) Fremstilling af udgangsmaterialet: (a) 20,9 g N-benzoyloxycarbonylglycin suspenderes 25 i 1500 ml tør 1,2-dimethoxyethan, og suspensionen afkøles til -20°C. Der tilsættes 10,1 g N-methylmorpholin og 13,7 g isobutylchloroformiat, og den fremkomne opløsning omrøres i 1 time ved -20°C og filtreres derpå. Filtratet (som holdes ved fra -10°C til 0°C) sættes i løbet af 30 flere timer portionsvis til en tilbagesvalende opløs ning af 24,55 g 5-chlor-2-methylaminobenzophenon i 200 ml 1,2-dimethoxyethan. Den fremkomne reaktionsblanding koges natten over og inddampes til tørhed i vakuum. Den gule remanens opløses i ethylacetat, vaskes med to 35 dele vand og én del mættet natriumchloridopløsning, tørres over vandfrit magnesiumsulfat og inddampes derpå 9 1Λ 92 84 Ο i vakuum. Ved søjlechromatografi af denne remanens på Florisil under anvendelse af blandinger af benzen og chloroform som løbemidler fås der 35 g (80%) rent 2-(N-benzyloxycarbonylamino)-N-(2-benzoyl-4-chlor-5 phenyl)-N-methylacetamid som en bleggul gummi.
Analyse for ¢24^1^^2^ (436/9):
Beregnet: C = 65,98%, H = 4,85%, N = 6,41%.
Fundet: C = 65,91%, H = 5,03%, N = 6,51%.
10 43,7 g 2-(N-benzyloxycarbonylamino)-N-(2-benzoyl--4-chlorphenyl)-N-methylacetamid opløses i 200 ml af en 30%'s opløsning af hydrogenbromid i iseddike, og den fremkomne reaktionsblanding omrøres natten over ved 15 stuetemperatur. Blandingen sættes langsomt til et stort overskud (2000 ml) af tør diethylether, idet der omrøres kraftigt. Det udskilte produkt får lov at afsætte sig, og de ovenstående væsker dekanteres fra. Remanensen rives med 150 ml acetone, og produktet fraskilles ved 20 filtrering, vaskes i rækkefølge med en mindste mængde af acetone og tør diethylether og tørres derpå i vakuum, hvorved der fås 29,5 g (77%) 2-amino-N-(2-benzoyl-4--chlorphenyl)-N-methylacetamid-hydrobromid som et hvidt hygroskopisk pulver med smeltepunkt 194-195°C (sønderdeling).
25
Analyse for C^gH^BrCl^C^ (383,7):
Beregnet: C=50,10%, H=4,21%, N=7,30%, Br ionisk=20,83%.
Fundet: C=49,98%, H=3,83%, N=7,15%, Br ionisk=21,14%.
149284 o ίο (b) 84 g N-benzyloxycarbonylglycin suspenderes i 500 ml alkoholfri chloroform, og suspensionen afkøles til -20°C. Den omrørte suspension behandles i løbet af 15 minutter portionsvis med 90 g phosphorpentachlorid, hvoref-5 ter omrøringen fortsættes, indtil der opnås en klar opløsning. Derefter sættes den kolde blanding i løbet af 30 minutter dråbevis til en kold (-5°C), kraftigt omrørt emulsion bestående af 82 g 5-chlor-2-methylaminobenzophenon, 347 g kaliumbicarbonat, 700 ml chloroform og 1400 ml vand.
10 Den fremkomne blanding omrøres yderligere i 1 time ved -5°C og derefter natten over ved stuetemperatur. Derpå afbrydes omrøringen, hvorefter de flydende faser får lov at skille ud. Chloroformlaget vaskes tre gange med 500 ml vand pr. gang og inddampes i vakuum. Der fås 150,7 g af en viskos, 15 gul gummi, der, som vist ved fysiske metoder, hovedsagelig består af rent (mere end 95%'s) 2-(N-benzyloxycarbonylami-no)-N-(2-benzoyl-4-chlorphenyl)-N-methylacetamid.
Det i henhold til det foregående afsnit fremkomne produkt opløses i 650 ml af en 30%'s opløsning af hydrogen-20 - bromid i iseddike og behandles på samme måde som beskrevet i afsnit (a) i dette eksempel, hvorved der fås 2-amino-N--(2-benzoyl-4-chlorphenyl)-N-methylacetaroid-hydrobromid i et totaludbytte på 77% ud fra 5-chlor-2-methylaminobenzo-phenon.
25 (c) 5,11 g Na,Ne-bisbenzyloxycarbonyl-L-lysin-N- -hydroxysuccinimidester opløses i 50 ml tørt dimethylformamid. Den fremkomne opløsning afkøles til -20°C og behandles med 4,8 g 2-amino-N-(2-benzovl-4-chlorphenyl)-N-methyl-acetamid-hydrobromid (fremstillet som beskrevet ovenfor un-30 dør (£>)) og derpå dråbevis med 1,44 g N-ethylmorpholin. Blandingen omrøres kraftigt ved -20°C i 1 time og derpå natten over ved stuetemperatur. Opløsningsmidlet fordampes i vakuum, remanensen opløses i 150 ml tørt ethylacetat, og den fremkomne fældning, 2,0 g N-ethylmorpholin, skilles fra ved 35 filtrering. Filtratet ekstraheres med 4 portioner på hver 25 ml 2 N saltsyre, hvorved der fjernes ca. 1,6 g 7-chlor- 149284 11 o -1,3-dihydro-l-methyl-5-phenyl-2-H-l,4-benzodiazepin-2--on, og den tilbageblevne organiske fase vaskes med vand, derpå med 2 portioner på hver 50 ml mættet natriumchloridopløsning, tørres over vandfrit magnesiumsulfat og inddam-5 pes i vakuum, hvorved der fås 6,4 g af en bleggul, olie-og gummiagtig remanens.
Denne remanens opløses i chloroform og underkastes søjlechromatografi på Florisil under anvendelse af chloroform til elueringen. Ved inddampning af ensartede ci 6 10 fraktioner fås der 5,8 g rent (N,N-bisbenzyloxycarbonyl--L-lysyl)-glycin-N-(2-benzoyl-4-chlorphenyl)-N-methylamid i form af en næsten farveløs, lysfølsom gummi. ta]^° = -9,3° (c=l i ethanol).
15 Analyse for C^gH^gClN^O^ (699,2):
Beregnet: C = 65,28%, H = 5,62%, N = 8,02%, Cl = 5,07%.
Fundet: C = 64,90% H = 5,56%, N = 7,84%, Cl = 5,25%.
(B) Fremgangsmåden ifølge opfindelsen: CL 6 20 (i) (n ,N -bisbenzyloxycarbonyl-L-lysyl)-glycin-N-' -(2-benzoyl-4-chlorphenyl)-N-methylamid omdannes under anvendelse af en 30%'s opløsning af hydrogenbromid i iseddike til L-lysylglycin-N-(2-benzoyl-4-chlorphenyl)-N-methyl-amid-dihydrobromid, som fås som et hygroskopisk pulver 25 med smeltepunkt 145-160°C (sønderdeling); [a]p^ = +15,6° (C = 1 i vand).
Analyse for C22H29Br2C^N4°3 (592,8):
Beregnet: C = 44,58%, H = 4,93%, N = 9,45%, Br ionisk = 30 26,96%.
Fundet: C = 43,58%, H = 5,17%, N = 9,21%, Br ionisk = 27,43%. H20 = 0,99%.
Vandfri: C = 44,02%, H = 5,11%, N = 9,30%, Br ionisk = 27,70%.
35 o •12 149284
Ved behandling af dette dihydrobromid i vandig opløsning ved passage over et overskud af en anionbytterhar-piks, såsom Amberlite® IRA-401 på chloridform og påfølgende lyofilisering af eluatet fås der i kvantitativt udbyt- 5 te L-lysylglycin-N-(2-benzoyl-4-chlorphenyl)-N-methylamid--dihydrochlorid som et hygroskopisk, hvidt, lysfølsomt pulver med smeltepunkt 125-145°C (langsom sønderdeling); [a]p° = +19,3° (c = 1 i vand).
10 Analyse for C22H29C^3N4°3 (503,86):
Beregnet: C = 52,45%, H * 5,80%, N = 11,12%, Cl = 21,12%.
Fundet: C = 51,58%, H = 5,80%, N = 11,18%, Cl = 20,80%? H20 = 0,99%.
Vandfri: C = 52,10%, H'* 5,75%, N = 11,29%, Cl = 21,10%.
15 β (ii) 1,4 g (N,N -bisbenzyloxycarbonyl-L-lysyl)- -glycin-N-(2-benzoyl-4-chlorphenyl)-N-methylamid opløses i 30 ml tør dichlormethan, hvorefter opløsningen afkøles til ca. -70°C og derpå behandles med 2 ml forafkølet bortrichlo-20 rid under omrøring. Blandingen omrøres under vandfri betingelser i 30 minutter ved ca. -70°C og bringes derpå i løbet af 2 timer langsomt på stuetemperatur. Reaktionsblandingen inddampes til tørhed i vakuum, remanensen genopløses i 30 ml frisk tørret dichlormethan, og opløsningen inddam-25 pes på ny til tørhed i vakuum. Dette gentages to gange med dichlormethan og derpå fire gange med methanol for at fjerne de resterende borforbindelser som flygtigt trimethylbo-rat. En koncentreret methanolisk opløsning af remanensen sættes under kraftig omrøring langsomt til en opløsning af 30 750 mg vandfri diethylether. Det hygroskopiske faste stof samles ved filtrering og tørres i vakuum. Dette produkt opløses i 30 ml vand, udrystes med 3 x 20 ml ethylacetat (til fjernelse af spor af 5-chlor-2-methylaminobenzophenon), hvorefter den vandige opløsning lyofiliseres. Der fås 0,7 g • 35 L-lysylglycin-N-(2-benzoyl-4-chlorphenyl)-N-methylamid-di-hydrochlorid, som er identisk med det i afsnit (i) i dette eksempel beskrevne produkt.
Claims (2)
1. Analogifremgangs måde til fremstilling af L-lysy lglycin-N- (2-benzoyl-4-chlorphenyl)-W-methylamid med formlen NH0
5. J— cf i?H2>4 Ί2Η-— NH— CO—CH—NH0 I 2 (L) 2 Λ 10 15 eller syreadditionssalte deraf, kendetegnet ved, at man i overensstemmelse med i og for sig kendte metoder fraspalter de beskyttende grupper, der er til stede i en forbindelse med den almene formel » ch3 ?h-r1 ^ (<?H2>4 , ^ XCH,- NH—CO—CH—NH—R | (L) 25 1 (II) 0 1 2 i hvilken R og R hver betegner en amino-beskyttende grup-30 pe, hvorpå man om ønsket omdanner den opnåede fri base til et syreadditionssalt deraf eller omdanner et fremkommet syreadditionssalt til den frie base eller til et andet syreadditionssalt.
2. Fremgangsmåde ifølge krav 1, kendetegnet 35 ved, at der fremstilles L-lysylglycin-N-(2-benzoyl-4-chlor-
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3656774 | 1974-08-20 | ||
| GB36567/74A GB1517164A (en) | 1974-08-20 | 1974-08-20 | Substituted-phenyl ketones and a process for the manufacture thereof |
| GB2182175 | 1975-05-21 | ||
| GB2182175 | 1975-05-21 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK373975A DK373975A (da) | 1976-02-21 |
| DK149284B true DK149284B (da) | 1986-04-21 |
| DK149284C DK149284C (da) | 1986-10-13 |
Family
ID=26255542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK373975A DK149284C (da) | 1974-08-20 | 1975-08-19 | Analogifremgangsmaade til fremstilling af l-lysylglycin-n-(2-benzoyl-4-chlorphenyl)-n-methylamid eller syreadditionssalte deraf samt forbindelser til anvendelse som udgangsforbindelser ved fremgangsmaaden |
Country Status (19)
| Country | Link |
|---|---|
| JP (1) | JPS6018656B2 (da) |
| AR (1) | AR217041A1 (da) |
| AT (1) | AT348985B (da) |
| AU (1) | AU502104B2 (da) |
| CA (1) | CA1177069A (da) |
| CH (1) | CH620900A5 (da) |
| DD (1) | DD123086A5 (da) |
| DE (1) | DE2537069A1 (da) |
| DK (1) | DK149284C (da) |
| ES (1) | ES440315A1 (da) |
| FI (1) | FI66592C (da) |
| FR (1) | FR2282261A1 (da) |
| GB (1) | GB1517164A (da) |
| IL (1) | IL47936A (da) |
| LU (1) | LU73219A1 (da) |
| NL (1) | NL7509884A (da) |
| NO (1) | NO150199C (da) |
| PH (1) | PH16616A (da) |
| SE (1) | SE426319B (da) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2754112A1 (de) * | 1977-12-05 | 1979-06-13 | Kali Chemie Pharma Gmbh | 1,4-benzodiazepinderivate, ihre salze und diese verbindungen enthaltende arzneipraeparate |
| IN184976B (da) * | 1996-06-13 | 2000-10-14 | Ranbaxy Lab Ltd |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3709898A (en) * | 1971-02-09 | 1973-01-09 | Upjohn Co | Process for the production of triazolobenzodiazepines and intermediates |
| JPS526861B2 (da) * | 1972-05-27 | 1977-02-25 | ||
| ZA735932B (en) * | 1972-09-21 | 1974-07-31 | Hoffmann La Roche | Benzodiazepine derivatives |
-
1974
- 1974-08-20 GB GB36567/74A patent/GB1517164A/en not_active Expired
-
1975
- 1975-08-13 CH CH1053375A patent/CH620900A5/de not_active IP Right Cessation
- 1975-08-18 IL IL47936A patent/IL47936A/xx unknown
- 1975-08-18 PH PH17475A patent/PH16616A/en unknown
- 1975-08-19 LU LU73219A patent/LU73219A1/xx unknown
- 1975-08-19 FR FR7525632A patent/FR2282261A1/fr active Granted
- 1975-08-19 CA CA000233720A patent/CA1177069A/en not_active Expired
- 1975-08-19 AU AU84074/75A patent/AU502104B2/en not_active Expired
- 1975-08-19 AR AR260048A patent/AR217041A1/es active
- 1975-08-19 DK DK373975A patent/DK149284C/da active
- 1975-08-19 DD DD187930A patent/DD123086A5/xx unknown
- 1975-08-19 NO NO752876A patent/NO150199C/no unknown
- 1975-08-19 ES ES440315A patent/ES440315A1/es not_active Expired
- 1975-08-19 JP JP50099885A patent/JPS6018656B2/ja not_active Expired
- 1975-08-19 AT AT642175A patent/AT348985B/de not_active IP Right Cessation
- 1975-08-19 SE SE7509268A patent/SE426319B/xx not_active IP Right Cessation
- 1975-08-20 NL NL7509884A patent/NL7509884A/xx not_active Application Discontinuation
- 1975-08-20 DE DE19752537069 patent/DE2537069A1/de active Granted
- 1975-08-20 FI FI752350A patent/FI66592C/fi not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FI66592C (fi) | 1984-11-12 |
| DE2537069C2 (da) | 1988-09-08 |
| NO150199B (no) | 1984-05-28 |
| JPS51125048A (en) | 1976-11-01 |
| NO752876L (da) | 1976-02-23 |
| ATA642175A (de) | 1978-08-15 |
| AT348985B (de) | 1979-03-12 |
| FI752350A7 (da) | 1976-02-21 |
| NO150199C (no) | 1984-09-05 |
| DK373975A (da) | 1976-02-21 |
| GB1517164A (en) | 1978-07-12 |
| DE2537069A1 (de) | 1976-03-04 |
| AU8407475A (en) | 1977-02-24 |
| JPS6018656B2 (ja) | 1985-05-11 |
| DK149284C (da) | 1986-10-13 |
| IL47936A (en) | 1980-01-31 |
| SE7509268L (sv) | 1976-02-23 |
| NL7509884A (nl) | 1976-02-24 |
| CA1177069A (en) | 1984-10-30 |
| SE426319B (sv) | 1982-12-27 |
| FR2282261B1 (da) | 1978-11-10 |
| ES440315A1 (es) | 1977-09-16 |
| PH16616A (en) | 1983-11-28 |
| FI66592B (fi) | 1984-07-31 |
| CH620900A5 (en) | 1980-12-31 |
| LU73219A1 (da) | 1977-04-15 |
| FR2282261A1 (fr) | 1976-03-19 |
| IL47936A0 (en) | 1975-11-25 |
| AR217041A1 (es) | 1980-02-29 |
| DD123086A5 (da) | 1976-11-20 |
| AU502104B2 (en) | 1979-07-12 |
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