CN115677675A - Salt of 6-oxaspiro [4,5] decane compound, preparation method and application - Google Patents

Salt of 6-oxaspiro [4,5] decane compound, preparation method and application Download PDF

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CN115677675A
CN115677675A CN202210627814.2A CN202210627814A CN115677675A CN 115677675 A CN115677675 A CN 115677675A CN 202210627814 A CN202210627814 A CN 202210627814A CN 115677675 A CN115677675 A CN 115677675A
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oxaspiro
fluorophenyl
benzyl
decan
pyridin
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向永哲
张济兵
马云龙
黄翠
陈洪
王颖
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Chengdu Easton Biopharmaceuticals Co Ltd
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Chengdu Easton Biopharmaceuticals Co Ltd
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Abstract

The invention relates to the field of pharmaceutical chemical synthesis, in particular to 6-oxaspiro [4,5] decane derivatives, and more particularly relates to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decane-9-yl) -N- (2- (pyridine-4-yl) benzyl) ethylamine pharmaceutically acceptable salts and a preparation method thereof, which are used for treating pain and pain-related disorders.

Description

Salt of 6-oxaspiro [4,5] decane compound, preparation method and application
Technical Field
The invention relates to the field of pharmaceutical chemical synthesis, in particular to 6-oxaspiro [4,5] decane derivatives, and more particularly relates to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decane-9-yl) -N- (2- (pyridine-4-yl) benzyl) ethylamine pharmaceutically acceptable salts and a preparation method thereof, which are used for treating pain and pain-related disorders.
Background
Until now, opioids (opioid drugs) represented by morphine are still effective drugs mainly for treating severe pain, and these drugs have good analgesic activity, but have great limitation on clinical application due to serious adverse reactions of the central nervous system, especially side effects such as respiratory depression, constipation, tolerance and addiction. Therefore, people are always dedicated to searching for ideal opioid with good analgesic effect and small addiction, and in the process of continuously exploring the structure-activity relationship of opioid, people have deeper understanding on the in vivo specific substance group of the opioid.
Three molecularly and pharmacologically distinct classes of Opioid Receptors (ORs) have been shown: δ, κ, and μ. Opioids are primarily conducted through opioid μ receptors. The mu receptor is a classical GPCR, and a large number of researches show that the biased agonist of the mu receptor has better analgesic effect and can reduce related side effects. This opens the possibility for the development of ideal opioid drugs. Currently, trevena TRV130 (oligoridine) is marketed for postoperative analgesia by FDA approval at 8 months of 2020. TRV130 phase iii clinical results show: under the dosage of achieving the same analgesic effect, the TRV130 has lower toxic and side effects than morphine, but has no significant difference and large toxic and side effects, the daily cumulative dosage of the TRV130 is not more than 27mg, and the safety window is narrow.
Therefore, on the basis of the existing domestic and foreign research, the invention strives to develop the mu receptor bias agonist with better drug effect, wide safety window and lower side effect, and provides a better choice for clinical application. The (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decane-9-yl) -N- (2- (pyridine-4-yl) benzyl) ethylamine is a pharmaceutically acceptable salt which is solid at normal temperature, improves the solubility, and has good pharmacokinetic property, long half-life period, good analgesic effect and good drug forming property.
Disclosure of Invention
The invention aims to disclose a compound (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decane-9-yl) -N- (2- (pyridine-4-yl) benzyl) ethylamine pharmaceutically acceptable salt shown as a formula I, a preparation method thereof and application thereof in preparing analgesic drugs, in particular application in preparing moderate to severe pain drugs.
Figure BDA0003678360720000021
The pharmaceutically acceptable salt is an acid salt, a zwitterion salt (inner salt) or a quaternary ammonium salt formed by inorganic and/or organic acid.
Preferably, the pharmaceutically acceptable salt is specifically acetate, oxalate, 4-aminosalicylate, ascorbate, benzenesulfonate, p-toluenesulfonate, benzoate, phthalate, butyrate, camphorsulfonate, camphorate, cinnamate, 2,2-dichloroacetate, formate, methanesulfonate, trifluoromethanesulfonate, ethanesulfonate, citrate, fumarate, hydrochloride, hippurate, glycolate, hydrobromide, hydroiodide, lactate, maleate, propionate, malonate, glutamate, nitrate, phosphate, salicylate, perchlorate, trifluoroacetate, sulfate, glutamate, aspartate, citrate, succinate or tartrate.
Further, the pharmaceutically acceptable salt specifically refers to oxalate, p-toluenesulfonate, D-tartrate, maleate, fumarate, L-glutamate, L-aspartate, acetate, benzoate, citrate, hydrobromide, phosphate, formate, benzenesulfonate, hydrochloride or sulfate.
Further, the pharmaceutically acceptable salts of the compound of formula I of the present invention, which is (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine, include, but are not limited to:
the diacetate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
(ii) the monoacetate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the bisulphate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono maleate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a dimaleate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monobenzoate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a dibenzoate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono L-aspartate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
di-L-aspartate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono D-aspartate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
di-D-aspartate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono-oxalate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the di-oxalate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a mono-citrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the dicitrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono D-tartrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the di-D-tartrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono L-tartrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
di-L-tartrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono L-glutamate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
di-L-glutamate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono D-glutamate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
di-D-glutamate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono-p-toluenesulfonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
di-p-toluenesulfonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the monofumarate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the difumarate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a dihydrobromide salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monohydrobromide salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monophosphate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a diphosphate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a diformate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
monopropionate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
dipropionate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine
A monomalonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a dimalonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a diphenylsulfonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
(iv) the monosulfate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monohydrochloride salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the dihydrochloride salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine.
Still further, pharmaceutically acceptable salts of the compound of formula I of the present invention (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine include, but are not limited to:
the diacetate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the bisulphate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono maleate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monobenzoate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono L-aspartate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono-oxalate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a mono-citrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono D-tartrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono L-glutamate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono-p-toluenesulfonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono-fumarate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the difumarate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a dihydrobromide salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monophosphate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a diformate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
monopropionate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a diphenylsulfonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
(iv) the monosulfate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monohydrochloride salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the dihydrochloride salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the hemifumarate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine.
In another aspect of the present invention, there is disclosed a process for the preparation of a pharmaceutically acceptable salt of a compound of formula I (formula II) comprising the steps of:
Figure BDA0003678360720000041
wherein: n =1 to 2, preferably n is 1 or 2.
(1) Adding a solvent into the compound of the formula I under the condition of stirring at room temperature until the compound is completely dissolved;
the solvent is selected from formamide, acetonitrile, methanol, ethanol, propanol, n-butanol, acetone, dioxane, tetrahydrofuran, methyl ethyl ketone, ethyl acetate, diethyl ether, isopropyl ether, methyl tert-butyl ether, dichloromethane, chloroform, bromoethane, benzene, chloropropane, toluene, carbon tetrachloride, carbon disulfide, cyclohexane, hexane or heptane.
(2) Slowly dripping acid or organic solvent solution of the acid, and fully stirring;
the acid or the organic solvent solution of the acid is acetic acid, oxalic acid, 4-aminosalicylic acid, ascorbic acid, benzenesulfonic acid, p-toluenesulfonic acid, benzoic acid, phthalic acid, butyric acid, camphorsulfonic acid, camphoric acid, cinnamic acid, 2,2-dichloroacetic acid, formic acid, methanesulfonic acid, trifluoromethanesulfonic acid, ethanesulfonic acid, citric acid, fumaric acid, hydrogen chloride dioxane solution, hippuric acid, glycolic acid, hydrobromic acid, hydroiodic acid, lactic acid, maleic acid, propionic acid, malonic acid, glutamic acid, nitric acid, phosphoric acid, salicylic acid, perchloric acid, trifluoroacetic acid, sulfuric acid, glutamic acid, aspartic acid, citric acid, succinic acid or tartaric acid.
(3) Filtering and vacuum drying to obtain the pharmaceutically acceptable salt of the compound of the formula I.
Wherein, the solvent in the step (1) further specifically refers to acetonitrile, methanol, ethanol, propanol, n-butanol, dioxane, tetrahydrofuran, ethyl acetate, dichloromethane or chloroform. Furthermore, the solvent in the step (1) specifically refers to tetrahydrofuran or ethyl acetate.
The molar ratio of the compound of formula I to the acid in step (1) is 1: (0.5 to 2);
further, the molar ratio of the compound of formula I to the acid in step (1) is 1: (1-2);
the acid or the organic solvent solution of the acid in the step (2) is further specifically oxalic acid, p-toluenesulfonic acid, D-tartaric acid, maleic acid, fumaric acid, L-glutamic acid, L-aspartic acid, acetic acid, benzoic acid, citric acid, hydrobromic acid, phosphoric acid, formic acid, benzenesulfonic acid, hydrochloric acid or sulfuric acid.
Through the test of the solubility of the pharmaceutically acceptable salt of the compound shown in the formula I in water, the compound shown in the invention has obviously improved solubility after being salified compared with the compound shown in the formula I ((R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridine-4-yl) benzyl) ethylamine) per se, such as the disulfate, monomaleate, monocitric acid, mono D-tartrate, mono-p-toluenesulfonate, monofumarate, difumarate, dihydrobromate, monosulfate, monohydrochloride and dihydrochloride of the compound shown in the invention shown in the formula I (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridine-4-yl) benzyl) ethylamine, and the solubility of the compound shown in the invention is over 10mg/ml, and the solubility of the monohydrochloride and the compound shown in the invention is improved by more than 100 times.
Through research and test on pharmacokinetics of normal rats, the pharmaceutically acceptable salt of the compound shown as the formula I shows excellent pharmacokinetic characteristics; through a pharmacodynamic test on the influence of a mouse hot plate model, the pharmaceutically acceptable salt of the compound shown in the formula I still can show a good analgesic effect 1h after administration, and is suitable for preparing analgesic drugs, in particular for preparing moderate to severe pain drugs.
In the present invention, "the compound of the present invention" and "the salt of the present invention" are used interchangeably and refer to pharmaceutically acceptable salts of the compound of formula I (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine.
Detailed Description
The present invention is described in further detail with reference to the following examples, but the present invention is not limited thereto, and any equivalent replacement in the field made in accordance with the present disclosure is included in the scope of the present invention.
The structure of the compound is determined by Mass Spectrometry (MS) or nuclear magnetic resonance (M) 1 H NMR). Nuclear magnetic resonance ( 1 H NMR) shifts (δ) are given in parts per million (ppm), nuclear magnetic resonance ( 1 H NMR) was measured using a BrukeraVANCE-400 nuclear magnetic spectrometerIn the following, the solvent used for the determination is tetradeuterated Methanol (Methanol-d) 4 ) Internal standard is Tetramethylsilane (TMS).
Mass Spectrometry (MS) measurements were performed using a FINNIGAN LCQad (ESI) mass spectrometer (manufacturer: therm, model: finnigan LCQ advantage MAX).
In the examples, the solution in the reaction is an aqueous solution unless otherwise specified.
In the examples, room temperature means an ambient temperature of 10 to 25 ℃.
HPLC test conditions: a chromatographic column: YMC-Triart C18250X 4.6mm I.D.S-5 um.
EXAMPLE 1 preparation of the Compound 1 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine
Figure BDA0003678360720000061
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000062
(R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) ethylamine (6.66g, 24mmol) was dissolved in methylene chloride (70 mL), and 2- (4-pyridyl) benzaldehyde (4.4 g, 24mmol) and anhydrous sodium sulfate (14g, 96mmol) were added thereto, followed by reaction at room temperature. After the reaction is carried out for 12 hours, dichloromethane in the reaction system is concentrated, then methanol (70 mL) is added to dissolve the dichloromethane, sodium borohydride (1.82g, 48mmol) is added in batches in ice water bath, after the reaction is finished, the methanol in the reaction system is concentrated, then water and ethyl acetate are added to dissolve the methanol, liquid separation is carried out, the water phase is extracted for 2 times by ethyl acetate, the organic phase is combined, then water washing and saturated saline water washing are carried out for 1 time, after anhydrous sodium sulfate is dried, suction filtration is carried out, and the filtrate is concentrated to obtain yellow oily matter. The yellow oil was purified by column chromatography (dichloromethane/methanol = 25/1) to give compound 1 (4.6 g, yellow oil) in 42.7% yield, purity: 98.18 percent.
MS m/z(ES):445.3[M+1] +
1 H NMR(400MHz,CDCl 3 )δ8.62–8.60(m,2H),7.35–7.30(m,3H),7.27–7.25(m,2H), 7.21–7.17(m,3H),7.01–6.97(m,2H),3.74–3.68(m,2H),3.51(s,2H),2.32–2.25(m,1H), 2.17–2.13(m,1H),2.03–1.96(m,2H),1.87(d,J=13.9Hz,1H),1.78–1.57(m,6H),1.50– 1.40(m,4H),0.85–0.77(m,1H).
EXAMPLE 2 preparation of the Compound 2 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine diacetate
Figure BDA0003678360720000071
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000072
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (86 mg, 0.193 mmol) was added ethyl acetate (3 ml) until it was dissolved, then acetic acid (23.2mg, 0.387mmol) was slowly added dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give the compound 2R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine diacetate (98 mg, light yellow solid), yield: 89.9 percent; HPLC:98.23 percent. The acetic acid content of (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine diacetate was 21.21% (theoretical 21.27%) calculated by HPLC external standard method using glacial acetic acid as a control.
MS m/z(ES):445.3[M+H] +
1HNMR(400MHz,Methanol-d4)δ8.62–8.59(m,2H),7.56–7.52(m,1H), 7.50-7.47(m,2H),7.36–7.29(m,5H),7.07(t,J=8.72Hz,2H),3.96(s,2H),3.70–3.67(m,2H), 2.63–2.56(m,1H),2.22-2.06(m,3H),1.93(s,6H),1.89–1.82(m,2H),1.77–1.68(m,2H), 1.64-1.57(m,2H),1.53–1.39(m,4H),1.20–1.15(m,1H),0.87–0.79(m,1H).
EXAMPLE 3 preparation of the Compound 3 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine disulfate
Figure BDA0003678360720000081
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000082
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (244 mg, 0.549 mmol) was added ethyl acetate (5 ml) until it dissolved, then sulfuric acid (108mg, 1.1 mmol) was slowly added dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give the compound 3R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine disulfate (318 mg, white solid) yield: 90.4 percent; HPLC:98.35 percent. The sulfuric acid content of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine disulfate was determined by titration to be 30.46% (theoretical 30.61%).
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,Methanol-d4)δ8.91(d,J=6.8Hz,2H),8.06(d,J=6.8Hz,2H),7.70–7.58(m, 3H),7.48(dd,J=7.4,1.7Hz,1H),7.41–7.36(m,2H),7.10–7.05(m,2H),4.14(d,J=6.2Hz, 2H),3.72–3.69(m,2H),2.87(td,J=12.5,4.4Hz,1H),2.35–2.26(m,2H),2.18(dd,J=13.9, 2.1Hz,1H),1.99–1.82(m,3H),1.76–1.68(m,2H),1.62–1.41(m,5H),1.18–1.15(m,1H), 0.86–0.78(m,1H).
EXAMPLE 4 preparation of the Compound 4 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monomaleate
Figure BDA0003678360720000083
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000091
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5)]Decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (310 mg, 0.697 mmol) tetrahydrofuran (5 ml) was added until it dissolved, then maleic acid (81 mg, 0.697 mmol) was added slowly dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5]Decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monomaleate compound 4 (237 mg, white solid), yield: 60.6 percent; HPLC:98.48 percent. (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5) was determined by titration]The maleic acid content of decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monomaleate was 20.59% (theoretical 20.71%). MS m/z (ES) 445.3[ m ] +H] +
1 H NMR(400MHz,Methanol-d4)δ8.62(dt,J=4.5,1.3Hz,2H),7.58–7.51(m,3H),7.37– 7.31(m,5H),7.07(td,J=8.8,1.1Hz,2H),6.23(d,J=0.9Hz,2H),4.08(s,2H),3.73–3.67(m, 2H),2.74–2.67(m,1H),2.24–2.12(m,3H),1.89–1.84(m,2H),1.77–1.69(m,2H), 1.66-1.57(m,2H),154-1.40(m,4H),1.23–1.17(m,1H),0.86-0.78m,1H).
EXAMPLE 5 preparation of the Compound 5 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine monobenzoate
Figure BDA0003678360720000092
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000093
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (75 mg, 0.169 mmol) was added tetrahydrofuran (5 ml) until it was dissolved, then benzoic acid (20.6 mg, 0.169 mmol) was added slowly dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monobenzoate compound 5 (95 mg, light yellow solid), yield: 99.3 percent; HPLC:98.21 percent. The benzoic acid content of (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monobenzoate was calculated to be 21.79% (theoretical 21.55%) using HPLC external standard method with benzoic acid as a control.
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,Methanol-d4)δ8.60(d,J=5.4Hz,2H),7.98–7.93(m,2H),7.59–7.56 (m,1H),7.50–7.46(m,3H),7.42–7.37(m,3H),7.36–7.34(m,2H),7.33–7.27(m,2H),7.07 –7.01(m,2H),3.98(s,2H),3.68–3.65(m,2H),2.64–2.57(m,1H),2.20–2.08(m,3H),1.94 –1.81(m,2H),1.77–1.69(m,2H),1.63–1.56(m,2H),1.51–1.39(m,4H),1.19–1.16(m, 1H),0.85–0.77(m,1H).
EXAMPLE 6 preparation of the Compound 6 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine mono oxalate
Figure BDA0003678360720000101
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000102
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (73mg, 0.164mmol) was added tetrahydrofuran (5 ml) until it was dissolved, then oxalic acid (14.8mg, 0.164mmol) was slowly added dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine mono oxalate compound 6 (75 mg, white solid) yield: 85.4 percent; HPLC:98.51%. Oxalic acid was used as a control, and the oxalic acid content of (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine mono-oxalate was 16.81% (theoretical 16.84%) calculated by HPLC external standard method.
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,Methanol-d4)δ8.62(d,J=5.0Hz,2H),7.60–7.58(m,1H),7.53-7.50(m, 2H),7.37-7.30(m,5H),7.07(t,J=8.5Hz,2H),4.12–4.05(s,2H),3.73-3.71(m,2H),2.72– 2.65(m,1H),2.21–2.10(m,3H),1.92–1.83(m,2H),1.78–1.70(m,2H),1.64–1.57m,2H), 1.53–1.41(m,4H),1.18–1.15(m,1H),0.86-0.78(m,1H).
EXAMPLE 7 preparation of the Compound 7 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine Monocitrate
Figure BDA0003678360720000111
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000112
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (67 mg, 0.151 mmol) was added tetrahydrofuran (5 ml) until it was dissolved, then citric acid (28.9 mg, 0.151 mmol) was added slowly dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine mono citrate compound 7 (75 mg, light yellow solid), yield: 99 percent; HPLC:98.11 percent. The citric acid content of (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine monocitrate was 30.21% (theoretical 30.17%) calculated by HPLC external standard method using citric acid as a control.
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,Methanol-d4)δ8.62(d,J=5.0Hz,2H),7.62–7.59(m,1H),7.54-7.49(m, 2H),7.37–7.29(m,5H),7.07(t,J=8.7Hz,2H),4.08–4.06(d,J=3.8Hz,2H),3.70–3.67(m, 2H),2.88–2.74(m,4H),2.70-2.63(m,1H),2.21–2.11(m,3H),1.93-1.84(m 2H),1.78-1.70 (m,2H),1.65-1.58(m,2H),1.51–1.341(m,4H),1.19–1.17(m,1H),0.85-0.77(m,1H).
EXAMPLE 8 preparation of the Compound 8 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine mono D-tartrate
Figure BDA0003678360720000121
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000122
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (65 mg, 0.146 mmol) was added tetrahydrofuran (5 ml) until it dissolved, then D-tartaric acid (21.9 mg, 0.146 mmol) was slowly added dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) mono D-tartrate compound 8 (73 mg, white solid) yield: 84%; HPLC:98.46 percent. The D-tartaric acid content of (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine mono D-tartrate was determined by titration to be 25.34% (theoretical 25.24%).
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,Methanol-d4)δ8.62(d,J=5.7Hz,2H),7.64–7.61(m,1H),7.53–7.48(m, 2H),7.36–7.29(m,5H),7.07(t,J=8.7Hz,2H),4.40(s,2H),4.07(s,2H),3.70–3.67(m,2H), 2.67-2.60(m,1H),2.20–2.06(m,3H),1.92–1.83(m,2H),1.79–1.69(m,2H),1.66-1.56(m, 2H),1.53–1.39(m,4H),1.22-1.16(m,1H),0.84-0.77(m,1H).
EXAMPLE 9 preparation of the Compound 9 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine mono-p-toluenesulfonate
Figure BDA0003678360720000123
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000131
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (63 mg, 0.142 mmol) was added tetrahydrofuran (5 ml) until it dissolved, then p-toluenesulfonic acid (24.4 mg, 0.142 mmol) was slowly added dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine mono p-toluenesulfonate compound 9 (45 mg, white solid) yield: 51.5 percent; HPLC:98.42 percent. The p-toluenesulfonic acid content of (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine mono-p-toluenesulfonate was determined by titration to be 28.11% (theoretical 27.92%).
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,Methanol-d4)δ8.61(d,J=6.0Hz,2H),7.67(d,J=8.2Hz,2H),7.59–7.56(m,1H),7.53–7.50(m,2H),7.36–7.28(m,5H),7.23(d,J=7.9Hz,2H),7.08–7.04(m, 2H),4.06(s,2H),3.68–3.63(m,2H),2.72–2.65(m,1H),2.37(s,3H),2.20–2.08(m,3H), 1.91-1.81(m,2H),1.76–1.68(m,2H),1.66-1.56(m,2H),1.54–1.36(m,4H),1.21-1.16(m, 1H),0.83–0.75(m,1H).
EXAMPLE 10 preparation of the Compound 10 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monofumarate
Figure BDA0003678360720000132
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000133
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5)]Decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (99 mg,0.223 mmol) tetrahydrofuran (5 ml) was added until it dissolved, then fumaric acid (25.8mg, 0.223mmol) was added slowly dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5]Decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monofumarate compound 10 (120 mg, white solid), yield: 96.1 percent; HPLC:98.45 percent. (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5) was measured by titration]The fumaric acid content of decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monofumarate was 20.84% (theoretical 20.71%). MS m/z (ES) 445.3[ m ] +H] +
1 H NMR(400MHz,Methanol-d4)δ8.62(d,J=5.96Hz,2H),7.60–7.57(m,1H),7.54-7.49(m, 2H),7.37–7.29(m,5H),7.10–7.05(m,2H),6.68(d,J=1.5Hz,2H),4.06(s,2H),3.70–3.67 (m,2H),2.71–2.64(m,1H),2.21–2.10(m,3H),1.88-1.83(m,2H),1.79-1.70(m,2H), 1.66-1.57(m,2H),1.53-1.39(m,4H),1.23–1.17(m,1H),0.86–0.78(m,1H).
EXAMPLE 11 preparation of the Compound 11 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine difumarate
Figure BDA0003678360720000141
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000142
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (49mg, 0.11 mmol) was added tetrahydrofuran (5 ml) until it was dissolved, then fumaric acid (25.6 mg, 0.22mmol) was slowly added dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine difumarate compound 11 (70 mg, white solid) yield: 93.8 percent; HPLC:98.39%. The fumaric acid content of (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine difumarate was determined by titration to be 34.44% (theoretical 34.30%).
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,Methanol-d4)δ8.64–8.62(m,2H),7.60–7.51(m,3H),7.39–7.30(m, 5H),7.10–7.06(m,2H),6.73(s,4H),4.08(s,2H),3.71–3.68(m,2H),2.73–2.66(m,1H), 2.23–2.12(m,3H),1.92–1.84(m,2H),1.79–1.70(m,2H),1.65–1.58(m,2H),1.54– 1.40(m,4H),1.20–1.18(m,1H),0.86–0.78(m,1H).
EXAMPLE 12 preparation of the Compound 12 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine dihydrobromide
Figure BDA0003678360720000151
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000152
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5]Decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (75 mg, 0.169 mmol) was added tetrahydrofuran (2 ml) until it was dissolved, and then hydrobromic acid (27.3 mg,0.337 mmol) until a white solid precipitates, stirring thoroughly for 3 hours, filtering and drying in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5]Decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine dihydrobromide compound 12 (72 mg, white solid), yield: 70.4 percent; HPLC:98.38 percent. (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5) was measured by titration]The hydrobromic acid content of decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine dihydrobromide was 26.74% (theoretical 26.68%). MS m/z (ES) 445.3[ m ] +H] +
1 H NMR(400MHz,Methanol-d4)δ8.94(d,J=6.7Hz,2H),8.08(d,J=6.8Hz,2H),7.73–7.70(m, 1H),7.68–7.59(m,2H),7.50–7.47(m,1H),7.42–7.35(m,2H),7.11–7.05(m,2H),4.22– 4.14(m,2H),3.76–3.66(m,2H),2.95–2.88(m,1H),2.38–2.27(m,2H),2.21–2.17(m,1H), 2.05–1.97(m,1H),1.93–1.84(m,2H),1.77–1.40(m,7H),1.24–1.18(m,1H),0.87–0.79 (m,1H).
EXAMPLE 13 preparation of the Compound 13 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine monopropionate
Figure BDA0003678360720000153
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000161
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine (68mg, 0.153mmol) was added ethyl acetate (2 ml) until it dissolved, then propionic acid (11.3mg, 0.153mmol) was slowly added dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine monopropionate compound 13 (78 mg, light yellow solid), yield: 98.4 percent; HPLC:98.22 percent. The content of propionic acid in (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethanamine monopropionate was calculated to be 14.41% (theoretical 14.29%) using HPLC external standard method with propionic acid as a control.
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,Methanol-d4)δ8.61–8.59(m,2H),7.56–7.54(m,1H),7.50–7.47(m, 2H),7.36–7.30(m,5H),7.08–7.04(m,2H),3.95(s,2H),3.70–3.67(m,2H),2.62–2.55(m, 1H),2.26–2.20(m,2H),2.21–2.06(m,3H),1.89–1.82(m,2H),1.75–1.68(m,2H), 1.64-1.57(m,2H),1.53–1.40(m,4H),1.25–1.18(m,1H),1.10–1.06(m,3H),0.87–0.78(m, 1H).
EXAMPLE 14 preparation of the Compound 14 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monosulfate
Figure BDA0003678360720000162
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000163
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (40mg, 0.09 mmol) was added ethyl acetate (5 ml) until it was dissolved, then sulfuric acid (8.8mg, 0.09mmol) was slowly added dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monosulfate compound 14 (35 mg, white solid), yield: 71.7 percent; HPLC:98.35 percent. The sulfuric acid content of (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monosulfate was determined by titration to be 18.20% (theoretical 18.08%).
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,Methanol-d4)δ8.79(s,2H),7.76–7.66(m,3H),7.61–7.53(m,2H),7.42 –7.35(m,3H),7.09–7.05(m,2H),4.12–4.11(m,2H),3.71–3.68(m,2H),2.82–2.75(m, 1H),2.27–2.13(m,3H),1.98–1.81(m,3H),1.75–1.58(m,3H),1.55–1.39(m,4H),1.19– 1.15(m,1H),0.84–0.77(m,1H).
EXAMPLE 15 preparation of the Compound 15 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monohydrochloride
Figure BDA0003678360720000171
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000172
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (314 mg, 0.706 mmol) was added ethyl acetate (5 ml) until it was dissolved, then 3.0M hydrogen chloride dioxane solution (0.24ml, 0.706mmol) was slowly added dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monohydrochloride compound 15 (263 mg, white solid) yield: 77.4 percent; HPLC:98.44 percent. The hydrogen chloride content of (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine monohydrochloride, determined by titration, was 7.78% (theoretical 7.59%).
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,Methanol-d4)δ8.93(d,J=6.6Hz,2H),8.09(d,J=6.1Hz,2H),7.73–7.71 (m,1H),7.68–7.59(m,2H),7.50–7.47(m,1H),7.40–7.35(m,2H),7.10–7.06(m,2H),4.18 –4.10(m,2H),3.75–3.67(m,2H),2.90–2.83(m,1H),2.34–2.26(m,2H),2.20–2.16(m, 1H),2.04–1.97(m,2H),1.93–1.84(m,2H),1.77–1.60(m,2H),1.57–1.41(m,4H),1.24-1.17 (m,1H),0.86–0.78(m,1H).
EXAMPLE 16 preparation of the Compound 16 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine dihydrochloride
Figure BDA0003678360720000181
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000182
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (314 mg, 0.706 mmol) was added ethyl acetate (5 ml) until it dissolved, then 3.0M hydrogen chloride dioxane solution (0.47ml, 1.412mmol) was slowly added dropwise until a white solid precipitated, stirred well for 3 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine dihydrochloride compound 16 (268 mg, white solid) in yield: 73.3 percent; HPLC:98.49 percent. The hydrogen chloride content of (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine dihydrochloride was determined by titration to be 14.18% (theoretical 14.09%).
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,Methanol-d4)δ8.96(d,J=6.1Hz,2H),8.12(d,J=6.4Hz,2H),7.77(dd,J=7.5,1.5Hz,1H),7.68–7.50(m,2H),7.50(dd,J=7.4,1.6Hz,1H),7.42–7.39(m,2H),7.09(t, J=8.5Hz,2H),4.20–4.12(m,2H),3.76–3.68(m,2H),2.92–2.85(m,1H),2.36–2.27(m, 2H),2.21–2.17(m,1H),2.10–1.99(m,2H),1.95–1.88(m,2H),1.78–1.67(m,2H),1.65 –1.42(m,4H),1.25–1.18(m,1H),0.88–0.80(m,1H).
EXAMPLE 17 preparation of the Compound 17 (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine hemifumarate
Figure BDA0003678360720000191
The preparation scheme is shown in the following scheme:
Figure BDA0003678360720000192
to (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine (1280 mg, 2.879 mmol) was added acetonitrile (15 mL) until it was dissolved, and a solution of fumaric acid (167mg, 1.439mmol) in tetrahydrofuran (3 mL) was added to the above solution at 65 deg.C, stirred well for 3 hours, then allowed to cool to room temperature and stirred for 2 hours, filtered and dried in vacuo to give R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine hemi-fumarate compound 17 (1149 mg, white solid) yield: 79.4 percent; HPLC:99.87 percent. The fumaric acid content of (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine hemifumarate was determined by titration to be 11.68% (theoretical 11.55%).
MS m/z(ES):445.3[M+H] +
1 H NMR(400MHz,DMSO)δ8.60–8.58(m,2H),7.49–7.47(m,1H),7.41–7.36(m,4H), 7.34–7.30(m,2H),7.25–7.22(dd,J=7.2,1.7Hz,1H),7.10(t,J=8.8Hz,2H),6.50(s,1H), 3.62–3.58(m,2H),3.52–3.48(m,2H),2.30–2.23(m,1H),2.10–2.00(m,2H),1.94–1.87(m, 1H),1.79–1.62(m,4H),1.59–1.50(m,2H),1.46–1.34(m,4H),1.16–1.10(m,1H),0.85– 0.77(m,1H).
Pharmacological toxicological evaluation
The test drugs are:
positive control drug: TRV130 (fumarate), supplied by gengduangdong biopharmaceutical gmbh, white solid, purity: 99.90 percent;
the compound of example 1: example 1 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, yellow oil, purity: 98.18 percent;
the compound of example 2: example 2 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, light yellow solid, purity: 98.23 percent;
the compound of example 3: example 3 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, white solid, purity: 98.35 percent;
the compound of example 4: example 4 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, white solid, purity: 98.48 percent;
the compound of example 5: example 5 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, light yellow solid, purity: 98.21 percent;
the compound of example 6: example 6 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, white solid, purity: 98.51%;
the compound of example 7: example 7 preparation, provided by the synthetic research laboratory of bonded bio-pharmaceutical corporation, dongdong, inc, as a pale yellow solid, purity: 98.11 percent;
the compound of example 8: example 8 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, white solid, purity: 98.46 percent;
the compound of example 9: example 9 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, white solid, purity: 98.42 percent;
the compound of example 10: example 10 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, white solid, purity: 98.45 percent;
the compound of example 11: example 11 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, white solid, purity: 98.39%;
the compound of example 12: example 12 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, white solid, purity: 98.38 percent;
the compound of example 13: example 13 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, light yellow solid, purity: 98.22 percent;
the compound of example 14: example 14 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, white solid, purity: 98.35 percent;
the compound of example 15: example 15 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, white solid, purity: 98.44 percent;
the compound of example 16: example 16 preparation, provided by the synthetic research laboratory of bonded bio-pharmaceutical corporation, dongdong, white solid, purity: 98.49 percent.
The compound of example 17: example 17 preparation, provided by the synthetic research laboratory of medeton biopharmaceutical corporation, white solid, purity: 99.87 percent.
Test example 1 solubility test
In order to examine the solubility of the salified and non-salified samples of examples 2, 3, 4,5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 according to the invention, example 1, the solubility of the above salts was determined in water at 37 ℃ and the results are shown in table 1 below:
table 1 solubility test results
Sample(s) Water (mg/mL)
Example 1 <0.1
Example 2 8.5
Example 3 >10
Example 4 >10
Example 5 4.8
Example 6 2.5
Example 7 >10
Example 8 >10
Example 9 0.7
Example 10 >10
Example 11 >10
Example 12 >10
Example 13 3.8
Example 14 >10
Example 15 >10
Example 16 >10
Example 17 3
The above test results show that the solubility of each salt of compound 1 prepared in examples 2 to 17 of the present invention is significantly improved as compared to compound 1 not formed as a salt, and the solubility of the salts prepared in examples 3, 4, 7, 8, 10, 11, 12, 14, 15, and 16 in water is more than 10mg/ml, and the solubility is improved by 100 times or more.
Test example 2 pharmacokinetic testing of Compounds of formula I after a single intravenous injection
1. The purpose of the test is as follows: pharmacokinetic parameters were examined for each compound of the experimental examples after a single intravenous administration.
2. Test method
(1) Test animals and drug administration
SD rats, SPF grade, half male and female, weighing 180-220g, were provided by Woodsville Biotech, inc. Approximately 5mg of each compound was weighed, dissolved in 100. Mu.L of DMSO, and then a solution of 0.25mg/mL was prepared by adding physiological saline. The administration mode is single tail vein injection administration, the administration volume is 4mL/kg, the administration concentration is 0.25mg/mL, and the administration dosage is 1mg/kg.
(2) Designing a blood sampling point:
before administration, 5min, 15min, 30min, 45min, 1h, 1.5h, 2h, 4h, 6h, 8h, 24h after administration, blood was taken from jugular vein, 200. Mu.L of whole blood was taken at each time point, and placed in a container containing EDTA-K 2 In the anticoagulation tube, the plasma is separated after the centrifugation of 2000 g at the low temperature of 4 ℃, transferred into a microcentrifuge tube and stored in a refrigerator at the temperature of 80 ℃ below zero for standby.
(3) Sample detection
By establishing a reliable LC/MS/MS analysis method, the blood concentration of each sample is detected, and the pharmacokinetic parameters of each compound are calculated.
3. Test results
Table 2 single tail vein administration major pharmacokinetic parameters (n = 3)
Parameter(s) T 1/2 (h) C 5min (ng·mL -1 ) AUC last (h·ng·mL -1 )
TRV130 0.72±0.01 249.7±25.3 322.1±23.4
Example 6 1.46±0.31* 520.3±32.2** 752.3±18.2**
Example 8 2.10±0.38** 485.0±24.2** 560.8±31.22**
Example 9 2.10±0.27** 499.0±12.5** 596.1±24.3**
Example 10 2.44±0.52** 498.3±27.0** 617.8±26.9**
Example 11 1.81±0.44* 481.3±18.5** 554.7±24.8**
Example 12 1.95±0.31** 463.7±27.2** 573.1±25.5**
Example 14 1.99±0.38** 482.3±28.4** 587.2±17.8**
Example 15 2.48±0.47** 465.7±21.2** 592.6±28.3**
Example 16 1.54±0.16** 499.3±26.3** 568.5±17.3**
Note: p <0.05, P <0.01 compared to the positive compound TRV 130.
Example 6, example 8, example 9, example 10, example 11, example 12, example 14, example 15, example 16 in vivo rat T compared to the positive compound TRV130 1/2 Elongation of more than one time, C 5min The blood concentration is obviously increased, AUC last The compound is obviously increased and has statistical difference, which indicates that the compound of the embodiments has longer duration of analgesic effect, lower effective dose and better absorption.
Test example 3 Effect of a Single intravenous injection of a Compound of formula I on the pain-like response of mice to Heat conduction in mice
1. The purpose of the test is as follows: test of the effect of test compounds on the pain-like response of mice to heat conduction in mice, the pharmacodynamic effects of examples 10 and 16 were investigated.
2. Test method
(1) Test animal and test article preparation
KM mice, SPF grade, all females, weighing 18-22g, were supplied by Dow-Coulter Biotech. TRV130, example 10, and example 16 were weighed out to about 5mg and dissolved in 100. Mu.L DMSO, and then a solution of an appropriate concentration was prepared by adding physiological saline.
(2) Test procedure
Taking 18-22g of KM full-female mice, measuring a basic pain threshold value on a hot plate at 55 +/-0.5 ℃, and selecting 32 mice with the pain threshold value of 5-30s for experiments. The pain threshold of 32 qualified mice is measured 2 times before administration at an interval of 5min, and the average value is taken as the basic pain threshold. The mice were randomly divided into 4 groups, i.e., vehicle control group, TRV130 group (1 mg/kg), example 10 group (1 mg/kg) and example 16 (1 mg/kg), 8 mice in each group were administered into the tail vein (the control group was administered with an equal amount of 0.9% physiological saline), the pain threshold of the mice was measured 30 and 60min after administration, and the difference between the pain threshold of each drug group and the pain threshold of the control group was statistically compared in 60s for those with the pain threshold exceeding 60 s.
(3) And (3) calculating test results:
the analgesic rate of the example compound was calculated according to the following calculation formula:
analgesic rate = (post-administration pain threshold-pre-administration pain threshold)/pre-administration pain threshold × 100%;
3. test results
Table 3 analgesic rate of each example compound (n = 8)
Figure BDA0003678360720000231
Note: p <0.05, P <0.01, compared to vehicle control group; compared with the positive compound TRV130, the delta-P is less than 0.05 and the delta-P is less than 0.01.
Compared with the vehicle control group, after administration for 30min and 60min, the positive compound TRV130 group, the example 10 group and the example 16 group all have significant analgesic effect; compared with the positive compound TRV130 group, the analgesic effect of the example 10 group and the analgesic effect of the example 16 group after 30min and 60min of administration are significantly different, which indicates that the compound has better analgesic effect.
It will be apparent to those skilled in the art from the foregoing that the compounds of the present embodiments exhibit analgesic effects, and that various modifications and variations can be made in the compounds, compositions and methods of the present invention without departing from the spirit or scope of the invention, and therefore, the invention includes modifications and variations to the invention provided they come within the scope of the appended claims and their equivalents.

Claims (10)

1. A pharmaceutically acceptable salt of compound (R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine having the structure shown in formula I:
Figure FDA0003678360710000011
wherein the salt is acid salt, zwitterion salt (inner salt) and quaternary ammonium salt formed by inorganic and/or organic acid.
2. The pharmaceutically acceptable salt of the compound of formula I according to claim 1, wherein the salt is an acid addition salt, in particular acetate, oxalate, 4-aminosalicylate, ascorbate, benzenesulfonate, p-toluenesulfonate, benzoate, phthalate, butyrate, camphorsulfonate, camphorate, cinnamate, 2,2-dichloroacetate, formate, methanesulfonate, trifluoromethanesulfonate, ethanesulfonate, citrate, fumarate, hydrochloride, hippurate, glycolate, hydrobromide, hydroiodide, lactate, maleate, propionate, malonate, glutamate, nitrate, phosphate, salicylate, perchlorate, trifluoroacetate, sulfate, glutamate, aspartate, citrate, succinate or tartrate.
3. Pharmaceutically acceptable salts of the compounds of formula I according to claim 1, wherein said salts are in particular oxalates, p-toluenesulphonates, D-tartrates, maleates, fumarates, L-glutamates, L-aspartates, acetates, benzoates, citrates, hydrobromides, phosphates, formates, benzenesulphonates, hydrochlorides or sulphates.
4. A pharmaceutically acceptable salt of a compound of formula I according to claim 2 or 3, wherein said salt is in particular:
the diacetate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
(iii) the monoacetate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the bisulphate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono maleate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a dimaleate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monobenzoate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a dibenzoate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono L-aspartate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the di-L-aspartate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono D-aspartate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
di-D-aspartate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono-oxalate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the di-oxalate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a mono-citrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the dicitrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono D-tartrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the di-D-tartrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono L-tartrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
di-L-tartrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono L-glutamate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
di-L-glutamate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono D-glutamate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
di-glutamate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono-p-toluenesulfonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
di-p-toluenesulfonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the monofumarate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the difumarate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a dihydrobromide salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monohydrobromide salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monophosphate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a diphosphate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the diformate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
monopropionate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
dipropionate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine
A monomalonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a dimalonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a diphenylsulfonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
(ii) the monosulfate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monohydrochloride salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the dihydrochloride salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine.
5. The pharmaceutically acceptable salt of the compound of formula I according to claim 4, wherein said salt is in particular:
the diacetate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the bisulphate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono maleate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monobenzoate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono L-aspartate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono-oxalate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a mono-citrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the mono D-tartrate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono L-glutamate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono-p-toluenesulfonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
mono-fumarate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the difumarate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a dihydrobromide salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the monophosphate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a diformate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
monopropionate of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a diphenylsulfonate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
(iv) the monosulfate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
a monohydrochloride salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the dihydrochloride salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine;
the hemifumarate salt of R) -2- (9- (4-fluorophenyl) -6-oxaspiro [4,5] decan-9-yl) -N- (2- (pyridin-4-yl) benzyl) ethylamine.
6. A process for preparing a pharmaceutically acceptable salt of a compound of formula I as claimed in any one of claims 1 to 3 or 5, comprising the steps of:
(1) Adding a solvent into the compound of the formula I under the condition of stirring at room temperature until the compound is completely dissolved;
the solvent is selected from formamide, acetonitrile, methanol, ethanol, propanol, n-butanol, acetone, dioxane, tetrahydrofuran, methyl ethyl ketone, ethyl acetate, diethyl ether, isopropyl ether, methyl tert-butyl ether, dichloromethane, chloroform, bromoethane, benzene, chloropropane, toluene, carbon tetrachloride, carbon disulfide, cyclohexane, hexane and heptane;
(2) Slowly dripping acid or organic solvent solution of the acid, and fully stirring;
the acid or the organic solvent solution of the acid is acetic acid, oxalic acid, 4-aminosalicylic acid, ascorbic acid, benzenesulfonic acid, p-toluenesulfonic acid, benzoic acid, phthalic acid, butyric acid, camphorsulfonic acid, camphoric acid, cinnamic acid, 2,2-dichloroacetic acid, formic acid, methanesulfonic acid, trifluoromethanesulfonic acid, ethanesulfonic acid, citric acid, fumaric acid, hydrogen chloride dioxane solution, hippuric acid, glycolic acid, hydrobromic acid, hydroiodic acid, lactic acid, maleic acid, propionic acid, malonic acid, glutamic acid, nitric acid, phosphoric acid, salicylic acid, perchloric acid, trifluoroacetic acid, sulfuric acid, glutamic acid, aspartic acid, citric acid, succinic acid or tartaric acid;
(3) Filtering and vacuum drying to obtain the pharmaceutically acceptable salt of the compound of the formula I.
7. The preparation method according to claim 6, wherein the solvent in step (1) is acetonitrile, methanol, ethanol, propanol, n-butanol, dioxane, tetrahydrofuran, ethyl acetate, dichloromethane or chloroform; preferably, the solvent in step (1) specifically refers to tetrahydrofuran or ethyl acetate.
8. The process according to claim 6, wherein the acid in the step (2) is oxalic acid, p-toluenesulfonic acid, D-tartaric acid, maleic acid, fumaric acid, L-glutamic acid, L-aspartic acid, acetic acid, benzoic acid, citric acid, hydrobromic acid, phosphoric acid, formic acid, benzenesulfonic acid, hydrochloric acid or sulfuric acid.
9. The process according to claim 6, wherein the molar ratio of the compound of formula I to the acid in step (1) is 1: (0.5-2); preferably, in step (1), the molar ratio of compound of formula I to acid is 1: (1-2).
10. The use of a pharmaceutically acceptable salt of a compound of formula I according to any one of claims 1 to 3 for the manufacture of a mu receptor agonist medicament; preferably, the use is in the preparation of an analgesic medicament; more preferably, the use is in the manufacture of a medicament for moderate to severe pain.
CN202210627814.2A 2021-07-21 2022-06-06 Salt of 6-oxaspiro [4,5] decane compound, preparation method and application Pending CN115677675A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114269738A (en) * 2020-08-10 2022-04-01 成都苑东生物制药股份有限公司 MOR receptor agonist compound, preparation method and application thereof
CN116041336A (en) * 2022-01-21 2023-05-02 成都苑东生物制药股份有限公司 New crystal form, application and preparation method of 6-oxaspiro [4,5] decane compound
CN116589451A (en) * 2022-02-11 2023-08-15 成都苑东生物制药股份有限公司 New crystal form, application and preparation method of 6-oxaspiro [4,5] decane compound

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114269738A (en) * 2020-08-10 2022-04-01 成都苑东生物制药股份有限公司 MOR receptor agonist compound, preparation method and application thereof
CN114269738B (en) * 2020-08-10 2023-09-29 成都苑东生物制药股份有限公司 MOR receptor agonist compound, preparation method and application thereof
CN116041336A (en) * 2022-01-21 2023-05-02 成都苑东生物制药股份有限公司 New crystal form, application and preparation method of 6-oxaspiro [4,5] decane compound
CN116589451A (en) * 2022-02-11 2023-08-15 成都苑东生物制药股份有限公司 New crystal form, application and preparation method of 6-oxaspiro [4,5] decane compound

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