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CAS No. : | 179321-49-4 | MDL No. : | MFCD00798168 |
Formula : | C11H19NO3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | WYVFPGFWUKBXPZ-UHFFFAOYSA-N |
M.W : | 213.27 | Pubchem ID : | 1512535 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H332-H335 | 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 |
---|---|---|
EXAMPLE 18 N-[cis-4-({(1R)-1-(4-chloro-benzyl)-2-[4-cyclohexyl-4-(1H-1,2,4-triazol-1-yl-methyl)piperidin-1-yl]-2-oxoethyl}amino)cyclohexyl]-glycinamide hydrochloride (compound No. 116) 18.1: methyl N-{cis-4-[(tert-butoxycarbonyl)-amino]cyclohexyl}-4-chloro-D-phenylalaninate 10 g of methyl 4-chloro-L-phenylalaninate hydrochloride in the presence of 8.5 g of tert-butyl (4-oxocyclohexyl)carbamate are placed in 200 ml of dichloromethane. 11.0 g of sodium triacetoxyborohydride are added. Stirring is maintained at ambient temperature for 18 h. The solution is hydrolyzed with a saturated aqueous sodium hydrogen carbonate solution and extracted with dichloromethane until the aqueous phase is completely depleted. After drying over MgSO4 and concentration to dryness, the crude obtained is chromatographed on silica gel, elution being carried out with a mixture of dichloromethane/ethyl acetate/methanol/aqueous ammonia ranging from 95/5/1/0.1 to 85/15/3/0.3. 6.1 g of methyl N-{cis-4-[(tert-butoxy-carbonyl)amino]cyclohexyl}-4-chloro-D-phenylalaninate and 7.4 g of methyl N-{trans-4-[(tert-butoxycarbonyl)-amino]cyclohexyl}-4-chloro-D-phenylalaninate are obtained. 18.2: 1N-{cis-4-[(tert-butoxycarbonyl)-amino]cyclohexyl}-4-chloro-D-phenylalanine |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
45%; 19% | With ethanol; sodium cyanoborohydride; for 16h; | Sodium cyanoborohydride (590 mg, 9.39 mmol) was added to a solution of Boc-4- aminocyclohexanone (1.00 g, 4.69 mmol) and <strong>[2338-18-3]2-aminoindane hydrochloride</strong> (955 mg, 5.63 mmol) in ethanol (25 mL). After stirring for 16 h, the reaction mixture was poured into aqueous l.OM sodium hydroxide solution (75 mL) and extracted three times with ethyl acetate. The combined organic layers were washed with brine and dried over sodium sulfate. Filtration followed by removal of volatiles under reduced pressure afforded a gummy solid. Flash chromatography (0-5% methanol in ethyl acetate) provided (in order of elution): cis-[4-(indan-2-ylamino)-cyclohexyl]-carbamic acid tert- butyl ester (700 mg; 45%) and £r°Hs-[4-(indan-2-ylamino)-cyclohexyl]-carbamic acid tert-butyl ester (300 mg; 19%) as gummy solids. |