SE190892C1 - - Google Patents

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Publication number
SE190892C1
SE190892C1 SE190892DA SE190892C1 SE 190892 C1 SE190892 C1 SE 190892C1 SE 190892D A SE190892D A SE 190892DA SE 190892 C1 SE190892 C1 SE 190892C1
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SE
Sweden
Prior art keywords
phenyl
piperidine
pethidine
formula
ethyl
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Swedish (sv)
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Publication of SE190892C1 publication Critical patent/SE190892C1/sv

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  • Hydrogenated Pyridines (AREA)

Description

KLASS INTERNATIONELLSVENSK C 07 d12 p:1/01 PATENT- OCH REGISTRERI NGSVERKET Ans. 10 21011957 inkom den 11111 1957 zitlagd den 28/12 1963 H MORREN, FOREST-BRYSSEL, BELGIEN San all framstailla piperidinderivat med analgetisk verkan Prioritet begard frcin den 16 november 1956 (Belgien) Morfin och 1-mety14-feny1-4-karbetoxi-piperidin, numera benamnt »petidin», ha som bekant analgetiska egenskaper. CLASS INTERNATIONAL SWEDISH C 07 d12 p: 1/01 PATENT AND REGISTRATION AGENCY Ans. 10 21011957 received on 11111 1957 dated 28/12 1963 H MORREN, FOREST-BRUSSELS, BELGIUM San all manufacture piperidine derivatives with analgesic effect Priority requested frcin on 16 November 1956 (Belgium) Morphine and 1-methyl-pheny1-4-carbethoxy-piperidine , now called «pethidine», have known analgesic properties.

Man har sokt framstalla foreningar, vilka likna petidin, for att erhalla starkare analgetika. Salunda beskriva 0. J. Beaenden, N. B. Eddy och H. Halbach, Bull. World Health Org. 13, 1955, sid. 937-998 och N. B. Eddy, J. Org. Chem. 21, 1956, sid. 125-126, emnen med den allmanna formeln: C,IL\ /Cl2CH2 nnr/CNcT_T er4 l41-,2%,“2 i vilken R betecknar en lagre alkylradikal och R' betecknar en vateatom eller en etyl-, propyl-, alkyl-, cyklohexyl-, 2-hydroxietyl-, amino-, 2-(dietylamino)-etyl- eller 2-hydroxi-3-fenyl-propylradikal. Efforts have been made to produce compounds, which are similar to pethidine, in order to obtain stronger analgesics. Salunda describe 0. J. Beaenden, N. B. Eddy and H. Halbach, Bull. World Health Org. 13, 1955, p. 937-998 and N. B. Eddy, J. Org. Chem. 21, 1956, p. 125-126, the substances of the general formula: C 1 IL 2 / Cl 2 CH 2 nnr / CNcT_T er4 141-, 2%, "2 in which R represents a lower alkyl radical and R 'represents a hydrogen atom or an ethyl, propyl, alkyl , cyclohexyl, 2-hydroxyethyl, amino, 2- (diethylamino) ethyl or 2-hydroxy-3-phenyl-propyl radical.

Ingen av dessa foreningar har emellertid starkare analgetisk verkan an petidin. Man har tvart om kunnat observera en lagre aktivitet. However, none of these compounds has a stronger analgesic effect than pethidine. On the contrary, it has been possible to observe a lower activity.

Vidare liar J. Weijlard och medarbetare, J. Am. them. Soc. 78, 1956, sidorna 2342-2343, framstallt en forening enligt den oven angivna formeln, i vilken R' betecknar 2-(p-aminofeny1)- etyl. De ha funnit, att denna forening har starkare analgetisk verkan an petidin, och att dess aktivitet vid djurfOrsok narmar sig morfinets. Furthermore, J. Weijlard and co-workers, J. Am. them. Soc. 78, 1956, pages 2342-2343, prepared a compound of the above formula, in which R 'represents 2- (p-aminophenyl) ethyl. They have found that this compound has a stronger analgesic effect than pethidine, and that its activity in animal research approaches that of morphine.

F. Elpern och medarbetare, Abstr. Papers 130th Meeting of Am. chem. Soc., september 1956, 7 N no. 11, ha framstallt forefinger enligt den allmanna formeln I, i vilken R' betecknar flagon av radikalerna fenyletyl, fenylpropyl, fenylbutyl, sub stituerad fenyletyl, pyridyletyl, cinnamyl, osv. Vissa av dessa fOreningar ha starkare analgetisk verkan On petidin, sarskilt om R' betecknar en cinnamylradikal. F. Elpern and employees, Abstr. Papers 130th Meeting of Am. chem. Soc., September 1956, 7 N no. 11, having prepared forefinger according to the general formula I, in which R 'represents the flag of the radicals phenylethyl, phenylpropyl, phenylbutyl, substituted phenylethyl, pyridylethyl, cinnamyl, etc. Some of these compounds have stronger analgesic effects on pethidine, especially if R 'represents a cinnamyl radical.

FOreliggande uppfinning hanfOr sig till framstallning av ett medel med starkt analgetisk verkan genom att 4-feny1-4-karbalkoxi-piperidin med formeln C61-1CFL—CIL »s\ ,C,,NH ROOC/ U-12 CH2/ i vilken R Or en lagre alkylradikal, omsattes med ett halogenderivat med formeln lx—(CH2)2—OH I vilken Hal representerar en halogenatom och x Or 1 eller 2, till bildning av ett piperidinderivat med den allmanna formeln C,IL\ /CIL—CIL\ N RO 0 \ CH 2 — CH/ dar R liar oven angiven betydelse och R' representerar radikalen —[(CH2)2-01x—(CH2)2 OH, i vilken x har oven angiven betydelse. Det har visat sig att foreningar med denna struktur ha en analgetisk verkan, vilken Or flera ganger starkare On petidinens och narmar sig morfinets. Dessa foreningar Or vidare mindre giftiga vid samma aktivitet och medfora icke de biverkningar, som observeras vid kande. analgetika. The present invention relates to the preparation of an agent having a strong analgesic action by substituting 4-phenyl-4-carbalkoxy-piperidine of the formula C61-1CFL-CIL »s \, C ,, NH ROOC / U-12 CH2 / in which R Or a lower alkyl radical, is reacted with a halogen derivative of the formula Ix- (CH2) 2-OH in which Hal represents a halogen atom and x Or 1 or 2, to form a piperidine derivative of the general formula C, IL \ / CIL-CIL \ N RO 0 \ CH 2 - CH / dar R has the meaning given above and R 'represents the radical - [(CH2) 2-01x— (CH2) 2 OH, in which x has the meaning given above. It has been shown that compounds with this structure have an analgesic effect, which Or several times stronger On pethidine and approaches morphine. Furthermore, these compounds are less toxic in the same activity and do not cause the side effects observed in the pitcher. analgesics.

Det var fullstandigt omOjligt att forutse, att enb art ersattning av petidinens metylgrupp med en alifatisk radikal innehallande en eterfunktion skulle kunna Oka den analgetiska verkan i sadan utstrackning. It was completely impossible to predict that simply replacing the methyl group of the pethidine with an aliphatic radical containing an ether function could increase the analgesic effect to such an extent.

Dessa foreningar ha icke endast starkare analgetisk verkan On petidin utan Oven lagre toxicitet och lag depressiv verkan pa andningen. These compounds not only have stronger analgesic effect on pethidine but also lower toxicity and low depressant effect on respiration.

Jamforande, farmakologiska experiment utforda pa ratter med en av foreningarna enligt uppfinningen, namligen 1-[2-(2-hydroxietoxi)-ety11-4- feny1-4-karbetoxipiperidin (produkt A), samt med petidin och morfin ha visat, att fiireningarna enligt uppfinningen ha dubbelt sa stark aktivitet som morfin. Resultaten fran dessa forsiik framga av foljande tabell, i vilken de angivna vardena svara mot den erforderliga mangden i mg per kg 2— — av djurets (ratta) kroppsvikt for astadkommande av analgetisk verkan resp. mot dodlig dos. Comparative pharmacological experiments challenge in association with one of the compounds of the invention, namely 1- [2- (2-hydroxyethoxy) -ethyl] -4-phenyl] -4-carbethoxypiperidine (product A), and with pethidine and morphine have shown that the compounds according to the invention have twice as strong activity as morphine. The results of these experiments are shown in the following table, in which the values given correspond to the required amount in mg per kg 2— - of the animal's (steering wheel) body weight for achieving analgesic effect resp. against lethal dose.

Produkt A Petidin Aktivitet vid subkutan Morfin injektion 1 2 Aktivitet vid buccal administrering 8 8 Toxicitet per os 200 100 ± 500 Toxicitet vid subkutan injektion 300 600 ±400 Exempel 1. Framstallning av 1-[2-(2-hydroxietoxi)-ety1]-4-feny1-4-karbetoxipiperidin. Product A Pethidine Activity by subcutaneous Morphine injection 1 2 Activity by buccal administration 8 8 Toxicity per os 200 100 ± 500 Toxicity by subcutaneous injection 300 600 ± 400 Example 1. Preparation of 1- [2- (2-hydroxyethoxy) -ethyl] - 4-phenyl-4-carbethoxypiperidine.

OH—(CH2)2-0— /CH2CH2\ /C 00C `CH,CF12/ En losning av 34,5 g 4-feny1-4-karbetoxipiperidin, 50 g 2-(2-kloretoxi)-etanol och 30 ml trietylamin halles 30 h vid 60° C under omroring. OH- (CH2) 2-O- / CH2CH2 \ / C 00C `CH, CF12 / A solution of 34.5 g of 4-phenyl-4-carbetoxypiperidine, 50 g of 2- (2-chloroethoxy) -ethanol and 30 ml of triethylamine kept for 30 hours at 60 ° C with stirring.

Efter kylning tillsattes 30 ml bensen, varefter blandningen filtreras och filtratet extraheras med utspddd saltsyra. Den sura losningen gores basisk med natronlut och de salunda frigjorda, basiska anmena extraheras med bensen. BensenlOsningen torkas Over natriumhydrwdd och losningsmedlet avdrives. Atersto den rektifieras forsiktigt i vakuurn. Forst erhalles 9,8 g joke omvandlad 4-feny1-4- karbetoxipiperidin och sedan 28 g 1-[2-(2-hydroxietoxi)-ety1]-4-feny1-4-karbetoxipiperidin. Basens kokpunkt Or 170° C/0,02 mm Hg. After cooling, 30 ml of benzene were added, after which the mixture was filtered and the filtrate was extracted with dilute hydrochloric acid. The acidic solution is made alkaline with sodium hydroxide solution and the thus liberated, basic anemene is extracted with benzene. The benzene solution is dried over sodium hydride and the solvent is evaporated. Atersto it is carefully rectified in the vacuum. First, 9.8 g of joke converted 4-phenyl-4-carbetoxypiperidine and then 28 g of 1- [2- (2-hydroxyethoxy) ethyl] -4-phenyl-4-carbetoxypiperidine are obtained. Base boiling point Or 170 ° C / 0.02 mm Hg.

Motsvarande hydroklorid framstalles genom behandling av alkohollOsning av basen med ett ringa overskott av med eter blandad saltsyra. Hydrokloriden kristalliserar ur en blandning av alkohol och eter. Hydrokloridens smaltpunkt är 115°C. The corresponding hydrochloride is prepared by treating the alcoholic solution of the base with a slight excess of hydrochloric acid mixed with ether. The hydrochloride crystallizes from a mixture of alcohol and ether. The melting point of the hydrochloride is 115 ° C.

Exempel 2. Framstallning av 1-(242-(2-hydroxietoxi) -etoxi] -ety1)-4-fenyl- 4-karbetoid-piperidin. Example 2. Preparation of 1- (242- (2-hydroxyethoxy) -ethoxy] -ethyl) -4-phenyl-4-carbetoid-piperidine.

OH—(CH2)2-0— m/CH,CH, /C00C21-1 —4CH2)2-0—(CH2) 2-J-1 \ `CH2CH2/ \C61-1 En losning av 16,7 g 4-feny1-4-karbetoxipiperidin, 15 ml trietylamin, 100 ml vattenfri toluen och 12,2 g 242-(2-hydroxietoxi)-etwd]-1-kloretan Mlles 20 h vid 150° C i en autoklav. Framstallningen slutfores pa det i exempel 1 beskrivna sattet, varvid man slutligen erhaller 1-(242-(2- hydroxietoici)-etwd]-ety1)-4-feny1-4-karbetoxipiperidin med ett utbyte av 60 %. Basens kokpunkt dr 205° C/0,01 mm Hg. Motsvarande hydroklorid framstalles p. det i exempel 1 beskrivna sdttet. OH- (CH2) 2-0— m / CH, CH, / C00C21-1 —4CH2) 2-0— (CH2) 2-J-1 \ `CH2CH2 / \ C61-1 A solution of 16.7 g 4 -phenyl-4-carbethoxypiperidine, 15 ml of triethylamine, 100 ml of anhydrous toluene and 12.2 g of 242- (2-hydroxyethoxy) -ethylo] -1-chloroethane Melt for 20 hours at 150 ° C in an autoclave. The preparation is completed in the manner described in Example 1, finally obtaining 1- (242- (2-hydroxyethoxy) -ethyl] -ethyl) -4-phenyl-4-carbethoxypiperidine in a yield of 60%. The boiling point of the base is 205 ° C / 0.01 mm Hg. The corresponding hydrochloride is prepared by the method described in Example 1.

Claims (1)

1. Patentansprik: San att framstalla piperidinderivat med analgetisk verkan, kannetecknat darav, att en 4-feny1- 4-karbalkoxi-piperidin med formeln C2145\ /CH—CH2\ NH ROOC/ CI-12—CH/ i vilken R är en lagre alkylradikal, omsattes med ett halogenderivat med formeln Hal—[(CH2)2-0]2,—(CH2)2—OH i vilken Hal representerar en halogenatom och x dr 1 eller 2, till bildning av ett piperidinderivat med den allmanna formeln C H / CH —CH2 6 2\ ROOC/ CH,—CH/ dar R har ovan angiven betydelse och R' representerar radikalen —[(CH2)2-0],—(CH2)20H, i vilken x har ovan angiven betydelse. AnfOrda publikationer:1. Patent claim: to produce piperidine derivatives having analgesic action, characterized in that a 4-phenyl-4-carbalkoxy-piperidine of the formula C2145 \ / CH-CH2 \ NH ROOC / CI-12-CH / in which R is a bearing alkyl radical, is reacted with a halogen derivative of the formula Hal - [(CH2) 2-0] 2, - (CH2) 2 - OH in which Hal represents a halogen atom and x dr 1 or 2, to form a piperidine derivative of the general formula CH / CH -CH2 6 2 \ ROOC / CH, -CH / where R has the meaning given above and R 'represents the radical - [(CH2) 2-0], - (CH2) 20H, in which x has the meaning given above. Request publications:
SE190892D SE190892C1 (en)

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