CN102603614B - 4-methoxymethyl-4- (N-substituted) aniline piperidine compound, preparation method and application - Google Patents

4-methoxymethyl-4- (N-substituted) aniline piperidine compound, preparation method and application Download PDF

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CN102603614B
CN102603614B CN201210065063.6A CN201210065063A CN102603614B CN 102603614 B CN102603614 B CN 102603614B CN 201210065063 A CN201210065063 A CN 201210065063A CN 102603614 B CN102603614 B CN 102603614B
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disoprofol
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刘进
张文胜
杨俊�
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West China Hospital of Sichuan University
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Abstract

4-methoxymethyl-4- (N-substituted) aniline piperidine compounds, a preparation method and application thereof. The compound has a structure as shown in formula (I), wherein R is selected from free alkali or hydrochloride thereofWherein n =1 or 2. The compound can be dissolved in water, has analgesic and sedative effects, is suitable for relieving pain and tranquilizing a patient monitored after an operation, is particularly favorable for realizing the operation of the patient on an automatic control drug delivery system, and can reduce the operation of an anesthesiologist. The basic preparation method of the compound is that a propofol compound (III) reacts with a fatty diacid cyclic diol ester compound (IV) to obtain an intermediate, and then the intermediate is condensed with a compound (II) with a remifentanil mother nucleus structure to obtain the compound.

Description

4-methoxyl methyl-4-(N-replacement) aniline piperidines, Preparation method and use
Technical field
The present invention relates to a kind of compound with general anesthesia and analgesic effect, particularly 4-methoxyl methyl-4-(N-replacement) aniline piperidines, and the preparation method of this compound and pharmaceutical use.
Background technology
In the curative activity of clinical operation and postoperative care, combining of analgesia, calmness and anaesthetic used the operation conformability of having guaranteed patient.Current clinical anesthesia is all the monitoring anesthesia under doctor controls, and anaesthetist need to note at any time patient's vital sign and patient's pain is experienced and processed targetedly, use various antalgic and sedative medicines and realize main dependence of these processing.Conventional analgesic is opiates agonist at present, as fentanyl, and remifentanil etc.Remifentanil (Remifentanil, 3 [4 (methoxycarbonyl)-4-(N-Phenylpropionamide base) 1-piperidines] methyl propionate), structure suc as formula (II a) shown in.The common drug of compatibility has Midazolam, Disoprofol etc. with it.Disoprofol (Propofol, 2,6-Bis(1-methylethyl)phenol), structure is as shown in formula III.Remifentanil and Disoprofol all have that onset time is rapid, and metabolism is feature rapidly, and the drug regimen that these two kinds of medicines form can produce good antalgic and sedative effect, and patient's quick-recovery soon after drug withdrawal.But because its metabolism is all very rapid, in surgical procedure, Anesthetist need to regulate the dosage of two kinds of medicines at any time, the drug level of remaining valid, increased the complexity of operation, thereby many doctors are more prone to the alfentanil and the Midazolam etc. that use analgesia and calm time to grow clinically, result can make the postoperative recovery of patient slower, extend the residence time at Operation theatre, caused to a certain extent the waste of medical resource.In patient's postoperative care, because also needing to continue to use antalgic and sedative medicine, be widely used by patient-controlled analgesia pump at present, patient can be by simply touching button according to its wish, by relevant device, Pain relief agents is infused in patient body, produce analgesic effect, thereby reduced the situation of excessive administration or administration deficiency.But although Disoprofol can produce good sedation effect when lower than anesthetic concentration, because it is water-soluble low, making is all at present the form use with emulsion, and a large amount of high-fat emulsion is not suitable for the long-time administration to postoperative patient.Because the methyl esters structure in the upper substituting group of remifentanil piperidine ring N in vitro can not stable existence in solution, after solution preparation, need in 6 ~ 8 hours, use, otherwise medicine decomposes curative effect decline.
Figure 2012100650636100002DEST_PATH_IMAGE001
Figure 2012100650636100002DEST_PATH_IMAGE002
Summary of the invention
For above-mentioned situation, the invention provides a kind of 4-methoxyl methyl-4-(N-replacement) aniline piperidines of new texture, can effectively address the above problem.The present invention further also provides the preparation method of this compound, and the purposes in pharmacy of this compound.
The said 4-methoxyl methyl-4-of the present invention (N-replacement) aniline piperidines, the free alkali of structure form as shown in formula I, or its hydrochloride (I '):
Figure 2012100650636100002DEST_PATH_IMAGE004
R in formula is selected from
Figure 2012100650636100002DEST_PATH_IMAGE005
, n=1 wherein or 2.
In the compound of said structure of the present invention, a kind of preferred form is to be the hydrochloride shown in formula (I '), and n=1 in substituent R.
The one typical case preparation method of above-claimed cpd of the present invention is can be by C 3-4the Disoprofol monoester compound of fat diacid (III a) with compound (II) (U.S. chemical abstract (CAS) numbering 938184-95-3) condensation with remifentanil mother nucleus structure, obtain formula I structure product; Further pass into again after HCl gas salify, can obtain the hydrochloride product of formula (I ').Reaction process is as follows, the n=1 in formula or 2:
Figure 2012100650636100002DEST_PATH_IMAGE006
Wherein, the Disoprofol monoester compound of said fat diacid (III a), a kind of method be can be in the usual way again corresponding fat diacid acid anhydride react and obtain with Disoprofol.In addition, the another kind of method that can also adopt, is to be reacted and obtain with fat diacid ring diol ester compound (IV) by Disoprofol compound (III), the wherein n=1 in fat diacid ring diol ester compound (IV), R 1for dimethyl, reaction process is as follows:
Figure 2012100650636100002DEST_PATH_IMAGE007
Experimental result shows, the compound water soluble of the compound of the above-mentioned form of the present invention, particularly hydrochloride form, and there is satisfied tranquilizing soporific and/or anesthesia and analgesic activity.
Take above-claimed cpd of the present invention acceptable auxiliary material in active drug composition and pharmacy, by the usual manner of current relative medicine preparation, can prepare and can there is tranquilizing soporific and/or anesthesia and analgesic medicine for clinical, the preferably injection type medicine of administration outside vein or vein, be specially adapted to the patient of postoperative care to carry out antalgic and sedative, be particularly advantageous in and realize the operation of patient to automatic control drug delivery system, and can reduce Anesthetist's operation.
Below in conjunction with the embodiment of embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following example.Without departing from the idea case in the present invention described above, various replacements or the change made according to ordinary skill knowledge and customary means, all should comprise within the scope of the invention.
Embodiment
embodiment 1
Disoprofol (III) (1.00 g, 5.61mmol) and the sub-isopropyl ester (IV) of propanedioic acid ring (0.81 g, 5.61mmol) are mixed, in 40 ℃ ~ 90 ℃ stirring 5h, be then chilled to room temperature.Reaction solution is poured in water, with saturated sodium bicarbonate solution adjust pH to ~ 8, ethyl acetate extraction, point water-yielding stratum, then adjust pH after ~ 5 with 1N hydrochloric acid, ethyl acetate extracts.After the water washing of organic layer salt, separate anhydrous sodium sulfate drying.Filtrate decompression evaporate to dryness after filtering, (III is 1.00 ~ 1.13g a), productive rate 67 ~ 76% to obtain the propanedioic acid Disoprofol monoesters intermediate of yellow oil.Experiment demonstration, suitably improves temperature of reaction, and the productive rate that is conducive to improve intermediate (reacts to obtain intermediate 1.00g, productive rate 67% under 40 ℃ of conditions; 90 ℃ of reactions, can obtain intermediate 1.13g, productive rate 76%).
Compound (II) (CAS numbers 938184-95-3) (500 mg of fentanyl parent nucleus will be there are, 1.56mmol) be dissolved in (30 ml) in methylene dichloride with propanedioic acid Disoprofol monoesters intermediate, add N, N-cyclohexyl carbon imide (DCC, 490 mg, 2.34mmol), stirred overnight at room temperature.Reaction solution pours in water, dichloromethane extraction, organic layer after salt water washing, anhydrous sodium sulfate drying.Filter, filtrate evaporate to dryness, resistates obtains the formula I yellow oil product 210mg of free alkali form, productive rate 23% through silicagel column (developping agent: methylene chloride/methanol=10:1) purifying.
Figure 2012100650636100002DEST_PATH_IMAGE008
The formula I product (210 mg, 0.37 mmol) of free alkali form is dissolved in 20ml anhydrous diethyl ether, passes into hydrogen chloride gas in 0 ℃, and reaction 2h, filters and obtain its corresponding hydrochloride product 186mg, productive rate 83%.
Product structure detected result:
Nuclear magnetic resonance analyser: Bruker WH-300 (300 MHz) spectrometer, TMS is interior mark, δ unit is ppm.
Mass spectrograph: Agilent 1200 series 6130 mass spectrometer, ESI.
1HNMR(δ)(d-DMSO):1.113~1.136(d,12H),1.484~1.758(m,4H),1.987~2.073 (t, 2H), 2.301~2.348 (d, 2H),2.740~2.888 (m, 4H),3.048~3.374(m,4H),3.441~3.479(d,2H),3.625(s,2H),3.733(s,3H),4.145~4.245(s,broad,3H),7.152 ~7.7 28(m, 8H),10.923(d,H)。
Ms(M-HCl+H):567.1。
embodiment 2
pharmacologically active experiment:
1. narcotic activity experiment:
15 body weight are divided into 3 groups at random at the male mouse of kunming of 20 ~ 30 grams, the compound of hydrochloride form of the present invention is configured to solution with physiological saline, and every group of 5 mouse, through tail vein injection administration, observe righting response and whether disappear, as the index whether with anaesthetic effect.The result of narcotic activity experiment is as shown in table 1.
The narcotic activity experimental result of table 1 the compounds of this invention
Compound Dosage (mg/kg) Whether righting reflex disappears
Physiological saline No
Disoprofol 15 Be
Figure 2012100650636100002DEST_PATH_IMAGE009
20 Be
Table 1 result shows, compound of the present invention has anaesthetic effect, can cause that mouse righting reflex reversibility disappears.
analgesic activities experiment:
In the time of 20 ℃ of room temperatures, body weight is placed on 55 ℃ of metal sheets at the female kunming mice of 20 ~ 30 grams, observe it from putting metal sheet to the reaction times of licking metapedes, get the reaction times more than 10 seconds the mouse below 30 seconds as suitable subjects.
The kunming mice that 15 warps is sieved in advance to stand the test is divided into 3 groups at random, compound described in patent of the present invention is configured to solution with physiological saline, every group of 5 mouse, test in 20 ℃ of room temperatures, through tail vein injection administration, observe its licking the sufficient reaction times on hot plate, if the reaction times extends one times or above person before compared with administration, there is the index of analgesic effect as this compound.Test-results sees the following form:
The analgesic experiment result of table 2 the compounds of this invention
Compound Dosage (mg/kg) Whether there is analgesic activity
Physiological saline No
Remifentanil 1 Have
Figure 2012100650636100002DEST_PATH_IMAGE010
3 Have
Table 2 result shows, the compounds of this invention has analgesic effect, can make the lick sufficient reacting generating time of mouse on hot plate obviously delay.

Claims (4)

1.4-methoxyl methyl-4-(N-replacement) aniline piperidines, structure is as the free alkali of formula I form or its hydrochloride (I '):
Figure 2012100650636100001DEST_PATH_IMAGE001
Figure 2012100650636100001DEST_PATH_IMAGE002
In formula, R is selected from
Figure 2012100650636100001DEST_PATH_IMAGE003
, wherein n=1.
2. the preparation method of compound described in claim 1, is characterized in that by C 3the Disoprofol monoester compound of fat diacid (III a) with compound (II) condensation with remifentanil mother nucleus structure, obtain formula I structure product, further pass into after HCl gas salify, obtain the hydrochloride product of formula (I '), reaction process is as follows, the n=1 in formula:
Figure 2012100650636100001DEST_PATH_IMAGE004
3. preparation method as claimed in claim 2, (III a) is reacted and is obtained with fat diacid ring diol ester compound (IV) by Disoprofol compound (III) to it is characterized in that the Disoprofol monoester compound of said fat diacid, the wherein n=1 in fat diacid ring diol ester compound (IV), R 1for dimethyl, reaction process is as follows:
Figure 2012100650636100001DEST_PATH_IMAGE005
4. described in claim 1, compound has the application in tranquilizing soporific and/or anesthesia and analgesic medicine in preparation.
CN201210065063.6A 2012-03-13 2012-03-13 4-methoxymethyl-4- (N-substituted) aniline piperidine compound, preparation method and application Active CN102603614B (en)

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WO2007087164A2 (en) * 2006-01-24 2007-08-02 Mallinckrodt Inc. Process for synthesizing remifentanil
CN101199480A (en) * 2007-12-11 2008-06-18 西安力邦医药科技有限责任公司 Compounded propofol fat emulsion injection containing analgesics and process for preparing same
US20080268071A1 (en) * 2007-04-26 2008-10-30 Auspex Pharmaceuticals, Inc. Substituted cyclohexanones
CN101906039A (en) * 2010-06-23 2010-12-08 四川大学华西医院 Hydroxy acid ester compound of substituted phenol, preparation method and application in medicine
CN102020574A (en) * 2009-09-14 2011-04-20 李勤耕 diisopropylphenyl gamma-aminobutyrate derivatives and preparation methods thereof
CN102344408A (en) * 2011-07-27 2012-02-08 中国人民解放军第四军医大学 Double-effect anesthetic

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007087164A2 (en) * 2006-01-24 2007-08-02 Mallinckrodt Inc. Process for synthesizing remifentanil
US20080268071A1 (en) * 2007-04-26 2008-10-30 Auspex Pharmaceuticals, Inc. Substituted cyclohexanones
CN101199480A (en) * 2007-12-11 2008-06-18 西安力邦医药科技有限责任公司 Compounded propofol fat emulsion injection containing analgesics and process for preparing same
CN102020574A (en) * 2009-09-14 2011-04-20 李勤耕 diisopropylphenyl gamma-aminobutyrate derivatives and preparation methods thereof
CN101906039A (en) * 2010-06-23 2010-12-08 四川大学华西医院 Hydroxy acid ester compound of substituted phenol, preparation method and application in medicine
CN102344408A (en) * 2011-07-27 2012-02-08 中国人民解放军第四军医大学 Double-effect anesthetic

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Title
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瑞芬太尼或芬太尼复合异丙酚麻醉与镇痛效果的比较;吴多志,等;《中国热带医学》;20060518;第6卷(第05期);第831-832页 *

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