Purity | Size | Price | VIP Price | USA Stock *0-1 Day | Global Stock *5-7 Days | Quantity | |||||
{[ item.p_purity ]} | {[ item.pr_size ]} |
{[ getRatePrice(item.pr_usd, 1,1) ]} {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate) ]} |
{[ getRatePrice(item.pr_usd, 1,1) ]} | {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate) ]} {[ getRatePrice(item.pr_usd,1,item.mem_rate) ]} | {[ item.pr_usastock ]} | Inquiry - | {[ item.pr_chinastock ]} | Inquiry - |
* Storage: {[proInfo.prStorage]}
CAS No. : | 1002-84-2 | MDL No. : | MFCD00002745 |
Formula : | C15H30O2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | WQEPLUUGTLDZJY-UHFFFAOYSA-N |
M.W : | 242.40 g/mol | Pubchem ID : | 13849 |
Synonyms : |
|
Num. heavy atoms : | 17 |
Num. arom. heavy atoms : | 0 |
Fraction Csp3 : | 0.93 |
Num. rotatable bonds : | 13 |
Num. H-bond acceptors : | 2.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 75.99 |
TPSA : | 37.3 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | Yes |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | Yes |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -3.07 cm/s |
Log Po/w (iLOGP) : | 3.66 |
Log Po/w (XLOGP3) : | 6.63 |
Log Po/w (WLOGP) : | 5.16 |
Log Po/w (MLOGP) : | 3.94 |
Log Po/w (SILICOS-IT) : | 4.81 |
Consensus Log Po/w : | 4.84 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 1.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.85 |
Log S (ESOL) : | -4.66 |
Solubility : | 0.00528 mg/ml ; 0.0000218 mol/l |
Class : | Moderately soluble |
Log S (Ali) : | -7.21 |
Solubility : | 0.0000148 mg/ml ; 0.000000061 mol/l |
Class : | Poorly soluble |
Log S (SILICOS-IT) : | -4.91 |
Solubility : | 0.00298 mg/ml ; 0.0000123 mol/l |
Class : | Moderately soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 3.0 |
Synthetic accessibility : | 2.2 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335-H413 | Packing Group: | N/A |
GHS Pictogram: |
![]() |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; calcium chloride beim Erhitzen; | ||
With boron trifluoride at 90℃; for 0.166667h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
84% | With potassium permanganate; sulfuric acid; acetic acid In dichloromethane; water at 20℃; for 21h; Cooling with ice; | |
With diethyl ether bei der Einw. nitroser Gase; | ||
With acetic acid bei der Einw. nitroser Gase; |
With permanganate(VII) ion | ||
With dihydrogen peroxide In water at 85℃; for 6h; Yield given; | ||
Multi-step reaction with 2 steps 1: 20 percent / O3/O2 / 20 °C 2: 130 °C / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With thionyl chloride | ||
With thionyl chloride | ||
With thionyl chloride for 8h; Heating; |
With thionyl chloride for 3h; Heating; | ||
With thionyl chloride for 1.5h; Heating; | ||
With thionyl chloride for 1.5h; Heating / reflux; | 3.A n-Pentadecanoic acid (24.3 g, 0.1 mol) was refluxed with 45 mL of thionyl chloride for 90 minutes. The thionyl chloride in excess was evaporated under reduced pressure, 20 mL of hexane was added and then evaporated under reduced pressure to remove the traces of any remaining thionyl chloride. Anhydrous aluminum chloride (13.5 g, 0.1 mol) was added to the crude pentadecanoyl chloride under stirring and external cooling. The mixture became homogeneous in about 10 minutes. Then 12 mL (0.15 mmol) of mesityl oxide was added dropwise, and the reaction mixture was stirred at room temperature for 12 h. The resulting dark viscous mass was hydrolyzed by carefully adding 50 mL of ice-cold 5% hydrochloric acid and 50 mL of diethyl ether, with external cooling (ice bath). The ethereal layer was separated and extracted another time with 20 mL of diluted hydrochloric acid, then discarded. The combined aqueous solutions. were extracted with 20 mL of diethyl ether, separated and treated with 15 mL of hexafluorophosphoric acid, when the crude pyrylium hexafluorophosphate (10, n=13) separated as a brown oil. After extraction with chloroform, separation, drying on anhydrous sodium sulfate and evaporation of the solvent, 25.9 g of crude compound were obtained. It was recrystallized twice from ethanol to afford 11.2 g (yield 25%) of pure pyrylium hexafluorophosphate (10, n=13). Characterization: m.p. 85° (determined by differential scanning calorimetry) 1H-NMR (CDCl3), δ, ppm: 7.70 (s, 1H: H-3, pyrylium), 7.61 (s, 1H: H-5, pyrylium), 3.06 (t, J=7.9 Hz, 2H: Cα-, 2.86 (s, 3H: CH3 γ-pyrylium), 2.69 (s, 3H: CH3 α-pyrylium), 1.81 (q, J=7.6 Hz, 2H: Cα-CH, 1.40 (q, J=7.6 Hz, 2H: Cα-CH2CH, 1.25 (m, 20H: 10 CH2 from fatty chain), 0.87 (t, J=6.7 Hz, 3H: CH3 from fatty chain); 13C-NMR (CDCl3), δ, ppm: 180.9 (C-6, pyrylium), 177.7 (C-4, pyrylium), 174.7 (C-2, pyrylium), 123.8 (C-3, pyrylium), 122.5 (C-5, pyrylium), 34.7 (Cα-H2-), 31.8, 29.64, 29.62, 29.60, 29.57, 29.51, 29.32, 29.30, 29.0 (2C), 27.01 (all from fatty chain), 23.5 (CH3 α-pyrylium), 22.6 (fatty chain), 21.1 (CH3 γ-pyrylium), 14.0 (CH3 from fatty chain). | |
With thionyl chloride; N,N-dimethyl-formamide at 20℃; | ||
With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 0℃; for 1h; Inert atmosphere; | ||
With oxalyl dichloride In dichloromethane at 20℃; for 2h; Inert atmosphere; | ||
With oxalyl dichloride In dichloromethane at 0℃; for 1h; Inert atmosphere; | 1.4.1 To a solution of acid R'COOH (484 mg, 2 mmol) in dichloromethane (10 ml) placed at 0° C. under inert atmosphere of nitrogen are added three drops of dry dimethylformamide (DMF) and oxalyl chloride (1.04 ml, 12 mmol). The mixture is stirred at 0° C. for 1 h. The dichloromethane and the excess oxalyl chloride are evaporated at 70° C. under reduced pressure. The acid chloride R'COCl thus obtained is dissolved in 5 ml dichloromethane. | |
With thionyl chloride for 0.5h; Reflux; | ||
With thionyl chloride at 20℃; Inert atmosphere; | ||
With thionyl chloride for 1h; Reflux; | ||
With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 0℃; for 1h; Inert atmosphere; | ||
With oxalyl dichloride In dichloromethane at 20℃; | ||
With thionyl chloride In toluene for 4h; Reflux; | The recovery standard pentadecanoic acid cholesteryl ester(hereafter referred to as 15:0-CE) was prepared accordingto Lusby et al. [20] with slight modifications. Pentadecanoicacid (121 mg, 0.5 mmol) was placed in a 50-ml flaskand dissolved in 10 ml of toluene. About 120 μl thionylchloride was added, and the solution was refluxed for 4 hto obtain the acid chloride. Afterwards, the remaining thionylchloride and parts of the toluene were removed underreduced pressure. To the residue (about 2 ml), 153 mgcholesterol (0.4 mmol) dissolved in 10 ml toluene wasadded, and the solution was stirred overnight at room temperature.The solvent was removed on a rotary evaporator,and the residue was re-dissolved in 4 ml n-hexane. Thissolution was purified by SPE. For this purpose, 15 g ofsilica gel deactivated with 20 % water (w/w) was giveninto a glass column (i.d. 2.5 cm) and pre-conditionedwith n-hexane. After 50 ml of n-hexane (fraction 1), three50-ml fractions (fractions 2-4) were collected with n-hexane/ethyl acetate (99:1, v/v) as eluent. Fractions 3 and 4yielded 154.3 and 64.8 mg of 15:0-CE. The purity inboth fractions was >99 % according to GC/MS and NMRspectroscopy analysis. | |
With thionyl chloride at 70℃; for 4h; | ||
With oxalyl dichloride | ||
With oxalyl dichloride | ||
With thionyl chloride In tetrachloromethane for 2h; Reflux; | General Procedures for Synthesis of AcidChlorides General procedure: For the preparation of chlorides higher than 10 Catoms the corresponding acid was refluxed for 2 h withthionyl chloride in CCl4.38 The solvent and the excess ofthionyl chloride were removed with the aid of the waterpump vacuum. | |
With thionyl chloride In N,N-dimethyl-formamide Reflux; | General procedure: A solution of suitable carboxylic acids 1a-k (1.0 mmol) and DMF(0.05 ml) in thionyl chloride (1.2 mmol) were refluxed for 3.5 h. Aftercooling at room temperature the mixture was concentrated to afford theacid chlorides 2a-k. A solution of acid chlorides 2a-k (1.0 mmol) in drydistilled acetone (20 ml) was added drop wise to a suspension of potassiumthiocyanate (1.0 mmol) in dry acetone and refluxed for 1.5 hr at50 °C to afford the corresponding isothiocyanates. After cooling onroom temperature, a solution of 3-aminobenzenesulfonamide 3(1.0 mmol) in dry acetone was added in it and the reaction mixture wasrefluxed for 9 h. After completion checked by TLC (n-Hexane: Ethylacetate 1: 1) the reaction mixture was poured onto crushed ice and theresulting precipitates were collected via simple filtration, washed, driedand recrystallized from ethanol to obtain the 1-aroyl/acyl-3-(3-aminosulfonylphenyl)thioureas 4a-k in excellent yields (Scheme 1). | |
With thionyl chloride In 1,2-dichloro-ethane; N,N-dimethyl-formamide at 20℃; for 3h; | 6; 13 Example 6: Synthesis of 1,5-anhydro-D-glucitol-2,3,4,6-O-tetrapentadecanoate Pentadecanoic acid (3 g, 12.4 mmol)The 1,2-dichloroethane (30 ml)And N, N-dimethylformamide (953 μl, 12.4 mmol) and dispersed.Add thionyl chloride (4.5 ml, 61.9 mmol),It reacted at room temperature for 3 hours. After completion of the reaction, concentrate under reduced pressure,Liquid pentadecanoyl chloride was obtained. This was used as it is in the next reaction. | |
With oxalyl dichloride In dichloromethane at 20℃; for 2h; Inert atmosphere; | 2.2. Synthesis of NATs General procedure: NATs were synthesized by the reaction of acid chlorides with taurine. For this, long-chain fatty acids were converted to the corresponding acid chlorides by treating with 4 mol equivalents of oxalylchloride at room temperature for 2 h under nitrogen atmosphere[Kamlekar et al., 2010]. After completion of the reaction, the excessoxalyl chloride was removed under a stream of dry nitrogen gas. NATs were synthesized by the drop-wise addition of about 1 mol equivalent of the acid chloride in dichloromethane to a solution of 1.2 mol equivalent of taurine in 1 M NaOH (to maintain pH 9-10.5) underconstant stirring at room temperature. After addition of all the reagents, the reaction was allowed to continue for two hours (Scheme 1). The crude NATs obtained as slurry was dissolved in ethanol by refluxing. The solution was filtered and the filtrate was stored in freezer (ca. 4 °C) overnight. This led to precipitation of the NATs and then later recovered by filtration. The obtained NATs were further purified bycolumn chromatography on silica gel with ethyl acetate/methanol/ammonium hydroxide (80/18/2) mixture as elution solvent. The overall yield for different NATs ranged around ∼70 %. The final productswere characterized by FT-IR, 1H and 13C NMR spectroscopy as well as by LC-MS. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In toluene |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
32% | With dicyclohexyl-carbodiimide In dichloromethane; N,N-dimethyl-formamide 0 deg C, RT, 24 h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
51.4% | In acetonitrile at 80℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87.8% | With triisopropylbenzenesulfonyl chloride; trifluoroacetic acid In pyridine 1.) triisopropylbenzenesulfonyl chloride, pyridine, 70 deg. C, 5h, 2.) CF3COOH, room temperatures, 2h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
at 130℃; Yield given. Yields of byproduct given; | ||
at 130℃; Heating; Yield given. Yields of byproduct given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | With chromium(VI) oxide; sulfuric acid In acetone at 0℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 5% 2: 72% | With bismuth trisphenylsulphide; dinitrogen tetraoxide In chlorobenzene at 110℃; for 12h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 19.6% 2: 8.8% 3: 14.1% 4: 21.3% 5: 20.3% 6: 2.2% | In methanol at 90℃; for 6h; other solvents; other objects of study: energy data, velocity constant; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98% | With hydrogen In 1,2-dimethoxyethane at 150℃; for 16h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98% | With hydrogen In 1,2-dimethoxyethane at 150℃; for 16h; further catalysts; | |
70% | Stage #1: n-Pentadecanoic acid With phenylsilane; potassium-t-butoxide; C22H30ClN2RuS2(1+)*Cl(1-) In tetrahydrofuran at 60℃; for 18h; Inert atmosphere; Stage #2: With water monomer; caesium fluoride In tert-butyl methyl ether at 20℃; for 3h; Inert atmosphere; | Pentadecan-1-ol (2q): To a stirred suspension of pentadecanoicacid (1q) (500 mg, 2.0627 mmol,1equiv.) in degassed THF (10 V) was added ARP-03 (21.6 mg, 0.0412 mmol, 2 mol%)and again degassed for 10 minutes. After 10 minutes of degassing, PhSiH3 (0.77mL, 6.1881 mmol, 3 equiv.) and t-BuOK (1 M in THF) (0.20 mL, 0.2062 mmol, 10mol%) were added dropwise to reaction mixture at RT. The reaction mixture washeated to 60°C and stirred for 18 h. The reaction mixture was then evaporatedto remove volatiles, then suspended in MTBE and stirred with aq. CsF solution(10%, 10 V) for 3 h. The organic layer was then separated and concentrated invacuum to furnish the crude, which was purified by column chromatography on silica gel(eluent: Ethyl acetate / n-hexane = 1/4) to afford pentadecan-1-ol (2q) (330 mg, 70%) as an off-whitesolid.1H NMR (400 MHz, DMSO- d6): δ 4.30 (t, J= 4.8 Hz, 1H), 3.40 - 3.30 (m, 2H), 1.45 - 1.10 (m, 26H), 0.84 (t, J = 6.8 Hz, 3H).13C NMR (100 MHz, DEPT -135, CDCl3): δ 63.25 (CH2), 32.96 (CH2), 32.07 (CH2), 29.83(CH2), 29.81 (CH2), 29.76 (CH2×4), 29.75 (CH2),29.58 (CH2), 29.51 (CH2), 25.89 (CH2), 22.84(CH2), 14.26 (CH3). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dicyclohexyl-carbodiimide In dichloromethane for 2h; Ambient temperature; | ||
With dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 2h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With ThxBHO-s-Bu In tetrahydrofuran at 25℃; for 96h; Yield given; | ||
Multi-step reaction with 2 steps 1: tetrahydrofuran / 20 °C 2: Li(Et2N)3AlH; pyridine / tetrahydrofuran / 0.5 h / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With E. coli cells (pCYP102, pGEc47); oxygen | ||
With wildtype P450BM3; NADPH In phosphate buffer at 37℃; for 0.5h; Title compound not separated from byproducts; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With oxygen In dimethyl sulfoxide at 5℃; for 0.5h; Triton X-100, phosphate buffer (pH 6.0), crude enzyme from Ulva pertusa; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 4-methyl-morpholine In N,N-dimethyl-formamide at -15℃; for 0.0833333h; | ||
With triethylamine In acetonitrile at 4℃; for 1h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With trimethylsilyl trifluoromethanesulfonate In dichloromethane at 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
31% | With 4-methyl-morpholine; isobutyl chloroformate In N,N-dimethyl-formamide at -15 - 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | With camphor sulphuric acid for 18h; Heating; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In tetrahydrofuran at 20℃; for 10h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82% | With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In tetrahydrofuran at 20℃; for 10h; | |
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In tetrahydrofuran for 10h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: palmitic acid With potassium hydroxide In methanol for 2h; Heating; Stage #2: silicon(IV) phthalocyanine dichloride In N,N-dimethyl-formamide at 145℃; for 0.166667h; microwave irradiation; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 55% 2: 6% | With dihydrogen peroxide; methyltrioxorhenium(VII); acetic acid at 80℃; for 4h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 51% 2: 6% | With dihydrogen peroxide; methyltrioxorhenium(VII); acetic acid at 80℃; for 4h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: palmitic acid With wildtype P450BM3; NADPH In phosphate buffer at 37℃; for 0.5h; Stage #2: diazomethane In diethyl ether Title compound not separated from byproducts; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In acetonitrile | ||
In acetonitrile Inert atmosphere; | 5.1.4. General procedure for the synthesis of derivatives 5a-c. Example: diethyl 2-(1-hydroxyhexadecylidene)malonate 5b67 General procedure: Triethylamine (1.30 mL, 9.36 mmol) and magnesium chloride (0.71 g, 7.49 mmol) were added to a stirred solution of diethyl malonate (1.00 g, 6.24 mmol) in dry acetonitrile (20 mL) while cooling at 0 °C. The mixture was stirred at room temperature for 2 h. Then a previously prepared mixture of palmitic acid (1.60 g, 6.24 mmol) and N,N'-carbonyldiimidazole (1.11 g, 6.87 mmol) in dry acetonitrile (15 mL) was added, and the resulting slurry was stirred overnight. After completion (TLC monitoring, SiO2/CHCl3), the mixture was cautiously acidified with 13% HCl while keeping the temperature below 25 °C, and the resulting mixture was stirred for additional 15 min. The organic layer was separated and evaporated, and the residue was treated with ethyl acetate (20 mL). The aqueous layer was extracted with ethyl acetate (2 × 20 mL), and the organic phases were combined, washed with saturated sodium bicarbonate solution (2 × 30 mL) and brine (3 × 30 mL), dried, and concentrated to give the crude diethyl 2-(1-hydroxyhexadecylidene)malonates which was purified by column chromatography (SiO2, CHCl3) to obtain compound 5b as a white solid (mp: 32-33 °C) in a 90% yield. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 48h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 48h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1.1: acetonitrile 2.1: triethylamine; magnesium chloride / acetonitrile / 2 h / 20 °C 2.2: acetonitrile / 20 °C 2.3: 96 percent / aq. HCl / acetonitrile / 0.25 h / 20 °C 3.1: 73 percent / NaOEt; EtOH / 5 h / Heating 4.1: 83 percent / dimethylformamide / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1.1: acetonitrile 2.1: triethylamine; magnesium chloride / acetonitrile / 2 h / 20 °C 2.2: acetonitrile / 20 °C 2.3: 96 percent / aq. HCl / acetonitrile / 0.25 h / 20 °C 3.1: 73 percent / NaOEt; EtOH / 5 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: acetonitrile 2.1: triethylamine; magnesium chloride / acetonitrile / 2 h / 20 °C 2.2: acetonitrile / 20 °C 2.3: 96 percent / aq. HCl / acetonitrile / 0.25 h / 20 °C 3.1: 73 percent / NaOEt; EtOH / 5 h / Heating 4.1: 83 percent / dimethylformamide / 2 h / 20 °C 5.1: 77 percent / N-bromosuccinimide; benzoyl peroxide / CCl4 / 2.5 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1.1: acetonitrile 2.1: triethylamine; magnesium chloride / acetonitrile / 2 h / 20 °C 2.2: acetonitrile / 20 °C 2.3: 96 percent / aq. HCl / acetonitrile / 0.25 h / 20 °C 3.1: 73 percent / NaOEt; EtOH / 5 h / Heating 4.1: 83 percent / dimethylformamide / 2 h / 20 °C 5.1: 77 percent / N-bromosuccinimide; benzoyl peroxide / CCl4 / 2.5 h / Heating 6.1: n-BuLi / hexane; diethyl ether / 0.5 h / -70 °C 6.2: 77 percent / hexane; diethyl ether / -70 - 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: acetonitrile 2.1: triethylamine; magnesium chloride / acetonitrile / 2 h / 20 °C 2.2: acetonitrile / 20 °C 2.3: 96 percent / aq. HCl / acetonitrile / 0.25 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 82 percent / EDCl / tetrahydrofuran / 10 h / 20 °C 2: 81 percent / 8 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: LiAlD4 2: HBr; H2SO4 3: Mg / tetrahydrofuran 4: Amberlyst 15 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: LiAlD4 2: HBr; H2SO4 3: Mg / tetrahydrofuran 4: Amberlyst 15 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: LiAlD4 2: HBr; H2SO4 3: Mg / tetrahydrofuran |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 1.) 1,1'-carbonyldiimidazole (CDI), 2.) Et3N / 1.) THF, a) 0 deg C 3 h, b) RT, 4 h, 2.) THF, CH3CN, RT, 16 h 2: 1,4-diazabicyclo<2.2.2>octane (DABCO) / xylene / 5 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 1.) 1,1'-carbonyldiimidazole (CDI), 2.) Et3N / 1.) THF, a) 0 deg C 3 h, b) RT, 4 h, 2.) THF, CH3CN, RT, 16 h 2: 1,4-diazabicyclo<2.2.2>octane (DABCO) / xylene / 5 h / Heating 3: 1.) LDA / 1.) ether, -78 deg C, 20 min, 2.) ether, from -78 deg C to RT, 16 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: SOCl2 / 8 h / Heating 2: triethylamine / tetrahydrofuran / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 4-(dimethylamino)pyridine (DMAP), 1-ethyl-3-(3-dimethylaminopropyl)carbodi-imide hydrochloride (WSC) / CH2Cl2 / Ambient temperature 2: boron trifluoride etherate / CH2Cl2 / 0 °C 3: H2 / Adams'platinum catalyst / ethanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In DMF (N,N-dimethyl-formamide) at 20℃; | 38 Example 38: [3-(5-{2-Fluoro-4-[(5R)-2-oxo-5-(1H-1,2,3-triazol-1-ylmethyl)-1,3-oxazolidin-3-yl]phenyl}pyridin-2-yl)-4,5-dihydroisoxazol-5-yl]methyl pentadecanoate (5R)-3- (3-FLUORO-4- {6- [5- (HYDROXYMETHYL)-4, 5-dihydroisoxazol-3-yl] pyridin-3-yl} phenyl)-5- (1H-1, 2, 3-TRIAZOL-1-YLMETHYL)-1, 3-oxazolidin-2-one (Example 36) (150 MG, 0.33 MMOL), pentadecanoic acid (157 mg, 0.51 MMOL), 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride (131 mg, 0.69 mmol), and 4-DIMETHYLAMINOPYRIDINE (14 mg, 0.08 mmol) were added to DMF (5 ML) and allowed to stir at room temperature overnight. EtOAc (50 ml) was then added and the organic layers were washed with water (2 x 20 ml), dried over Na2SO4 and concentrated in vacuo to yield a crude residue. The residue was purified by column chromatography using 0-5% MeOH/dichloromethane to yield the product as a white solid (100 MG). MS (ELECTROSPRAV : 663.24 (MH+) FOR C36H47FN605 1H-NMR (DICHLOROMETHANE-D 8 : 0.67 (t, 3H); 1.09 (s, 21H); 1.43 (M, 3H); 2.12 (t, 2H); 3.16 (dd, 1H) ; 3.41 (dd, 1H) ; 3.81 (dd, 1H); 4.05 (m, 3H); 4.62 (t, 2H); 4.80 (M, 1H) ; 4.90 (M, 1H); 7.08 (dd, 1H); 7.34 (m, 2H); 7.54 (s, 1H); 7.64 (s, 1H); 7.73 (d, 1H) ; 7.88 (d, 1H); 8.59 (s, 1H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With thionyl chloride; In diethyl ether; trichloroacetic acid; | REFERENCE EXAMPLE 1 After a mixture of n-pentadecanoic acid (25 g, 103 mmol) and thionyl chloride (3.15 g, 26.5 mmol) was stirred for 3 hours at 75 to 80 C., a solution of <strong>[541-15-1]L-carnitine</strong> (4.27 g, 26.5 mmol) in 25 g of trichloroacetic acid was added at 60 C. The resulting mixture was stirred for 3 hours at 80 C. under argon atmosphere and then poured into stirred 100 ml of diethyl ether. The precipitates were collected by filtration, washed with diethyl ether and then dried to give 11.8 g of a crude desired product as a colorless solid. 11.8 g of the crude product was recrystallized from isopropanol to provide 9.38 g of (R)-(3-carboxy-2-pentadecanoyloxypropyl)trimethylammonium chloride as colorless needles. m.p.: 167 to 169 C. IR (Nujol) cm-1: 3020 to 2480, 1740, 1710 NMR (DMSO-d6) delta: 0.85 (3H, t, J=6.7Hz), 1.24 (22H, br s), 1.47 to 1.57 (2H, m), 2.23 to 2.40 (2H, m), 2.62 to 2.76 (2H, m), 3.12 (9H, s), 3.68 (1H, br d), 3.81 (1H, dd, J=14, 8.1Hz), 5.42 to 5.49 (1H, m) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | In ethanol prepn. by refluxing ZnO with excess of carboxylic acid in EtOH for about2 h; cooled; ppt. filtered off; washed (EtOH) repeatedly; collected; kept over silica gel in vac. desiccator; elem. anal.; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With dmap; diisopropyl-carbodiimide In N,N-dimethyl-formamide at 20℃; for 24h; |