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Chemical Structure| 1236549-06-6 Chemical Structure| 1236549-06-6

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Chemical Structure| 1236549-06-6

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Product Details of [ 1236549-06-6 ]

CAS No. :1236549-06-6
Formula : C38H59N3O8
M.W : 685.89
SMILES Code : O=C(OCC1=CC=CC=C1)N[C@H]([C@@H](O)C[C@H](C(NCC(C)(C)C(N)=O)=O)C(C)C)C[C@H](CC2=CC=C(OC)C(OCCCOC)=C2)C(C)C

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Application In Synthesis of [ 1236549-06-6 ]

* 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.

  • Downstream synthetic route of [ 1236549-06-6 ]

[ 1236549-06-6 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 1236549-06-6 ]
  • [ 173334-57-1 ]
YieldReaction ConditionsOperation in experiment
86% With 5%-palladium/activated carbon; hydrogen; In tert-butyl methyl ether; at 25℃; under 2280.15 Torr; for 16h; In a hydrogenation kettle, (1S,2S,4S)-4-(2-carbamoyl-2-methylpropylcarbamoyl)-2-hydroxy-1-{(S)-2-[4-methoxy-3-(3-methoxypropoxy)-benzyl]-3-methylbutyl}-5-methyl-hexyl)-carbamic acid benzyl ester (the compound of formula XXIII-B) (6.8 g, 10 mmol) is dissolved in methyl tert-butyl ether (100 ml) along with 5% Pd-C (0.5 g) and the hydrogenation is taken place under 25 C and 3 atm for 16 hours until the TLC monitoring demonstrates the starting materials are exhausted. The reaction solution is filtered and catalyst is washed with methyl tert-butyl ether (50 ml). The filtrates are combined and solvent is removed under reduced pressure. The residue is purified with short column of silica gel chromatography to obtain Aliskiren (I) (4.8 g) as a wax material. The yield is 86% as calculated from the compound of formula XXIII-B. The resulted product has analytic data agree with the product obtained in Example 8. The Aliskiren compound of formula I can be characterized by data collected from: MS m/z: 552.6 (M+H)+; 1H-NMR (400 MHz, CDCl3) δ 6.88-6.75 (m, 3H), 4.08-4.04 (t, J = 6.3Hz, 2H), 3.79 (s, 3H), 3.60-3.55 (t, J = 6.3Hz, 2H), 3.30 (s, 3H), 3.30-3.25 (m, 3H), 2.69 (m, 2H), 2.49 (m, 1H), 2.27 (m, 1H), 2.04 (m, 2H), 1.78-1.35 (m, 7H), 1.10 (m, 6H), 0.90 (m, 12H) ppm.
86% With 5%-palladium/activated carbon; hydrogen; In tert-butyl methyl ether; at 25℃; under 2280.15 Torr; for 16h; In a hydrogenation kettle, (1 S,25,45)-4-(2-carbam- oyl-2-methylpropyl-carbamoyl)-2-hydroxy-1 -{(S)-2-[4-methoxy-3-(3-methoxypropoxy)-benzyl]-3-methylbutyl}-5- methyl-hexyl)-carbamic acid benzyl ester (the compound of formula XXIII-13) (6.8 g, 10 mmol) is dissolved in methyl tert-butyl ether (100 ml) along with 5% Pd-C (0.5 g) and the hydrogenation is taken place under 25 C. and 3 atm for 16 hours until the TLC monitoring demonstrates the starting materials are exhausted. The reaction solution is filtered and catalyst is washed with methyl tert-butyl ether (50 ml). The filtrates are combined and solvent is removed under reduced pressure. The residue is purified with short column of silica gel chromatography to obtainAliskiren (I) (4.8 g) as a wax material. The yield is 86% as calculated from the compound of formula XXIII-13. The resulted product has analytic data agree with the product obtained in Example 8.
A solution of the above prepared lactone (5.4 g), 3-amino-2,2-dimethyl propionamide (1.5 g) and 2-hydroxypyridine (1 g) in tert.-butyl methyl ether (10 ml), containing triethylamine (0.2 ml), was stirred for 18 hrs at 80 C., then cooled to rt and diluted with toluene (20 ml) and washed with 10% sodium hydrogen sulphate solution (ml). The organic phase was separated, washed once with water (50 ml), dried with magnesium sulphate, filtrated and evaporated under reduced pressure to give a yellow oil which was suspended in hexane (100 ml), slurry stirred a few min, filtrated and the filtrate evaporated under reduced pressure providing a foam of Cbz-protected derivative of Aliskiren (Ia): 4.5 g. The crude Cbz-protected Aliskiren (4.5 g) was the dissolved in a mixture of glacial acetic acid and ethanol (40 ml, 1:1) and after addition of 10% Pd-C under intensive stirring the slurry was hydrogenated under normal pressure at rt. The reaction mixture was then filtered to remove the catalyst, poured on water (100 ml) and pH adjusted with 37% sodium hydroxide solution to 10. The final product, Aliskiren was then extracted 4 times with dichloromethane (4×100 ml), the organic phase evaporated under reduced pressure providing crude Aliskiren (Ia): 4.0 g with identical analytical data as reported e.g. in EP 0 678 503 on p. 74, example 137: MS (M+552), Rf 0.33 on silicagel eluens: dichloromethane/methanol=8:2.
The crude Cbz-protected Aliskiren (4.5 g) was the dissolved in a mixture of glacial acetic acid and ethanol (40 ml, 1:1) and after addition of 10% Pd-C under intensive stirring the slurry was hydrogenated under normal pressure at rt. The reaction mixture was then filtered to remove the catalyst, poured on water (100 ml) and pH adjusted with 37% sodium hydroxide solution to 10. The final product, Aliskiren was then extracted 4times with dichloromethane (4×100 ml), the organic phase evaporated under reduced pressure providing crude Aliskiren (Ia): 4.0 g with identical analytical data as reported e.g. in EP 0678503 p. 74, example 137: MS(M+ 552), Rf 0.33 on silicagel eluens: dichloromethane/methanol=8:2.

 

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