(S)-2-[5-((R)-1-Benzyloxycarbonylamino-2-hydroxy-ethyl)-pyrazol-1-yl]-4-methyl-pentanoic acid methyl ester

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Chemical Name:(S)-2-[5-((R)-1-Benzyloxycarbonylamino-2-hydroxy-ethyl)-pyrazol-1-yl]-4-methyl-pentanoic acid methyl ester
CAS No.:258833-69-1
Molecular Formula:C₂₀H₂₇N₃O₅
Molecular Weight:389.451
Hs Code.:

Synonyms:(S)-2-[5-((R)-1-Benzyloxycarbonylamino-2-hydroxy-ethyl)-pyrazol-1-yl]-4-methyl-pentanoic acid methyl ester

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Chemical Property of (S)-2-[5-((R)-1-Benzyloxycarbonylamino-2-hydroxy-ethyl)-pyrazol-1-yl]-4-methyl-pentanoic acid methyl ester

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Technology Process of (S)-2-[5-((R)-1-Benzyloxycarbonylamino-2-hydroxy-ethyl)-pyrazol-1-yl]-4-methyl-pentanoic acid methyl ester

There total 9 articles about (S)-2-[5-((R)-1-Benzyloxycarbonylamino-2-hydroxy-ethyl)-pyrazol-1-yl]-4-methyl-pentanoic acid methyl ester which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 90.0%

: 67-56-1
methanol

: 258830-48-7
(R)-4-[2-((S)-1-Carboxy-3-methyl-butyl)-2H-pyrazol-3-yl]-oxazolidine-3-carboxylic acid benzyl ester

: 258833-69-1
(S)-2-[5-((R)-1-Benzyloxycarbonylamino-2-hydroxy-ethyl)-pyrazol-1-yl]-4-methyl-pentanoic acid methyl ester

Guidance literature:: With toluene-4-sulfonic acid; for 48h; Heating;
DOI:10.1016/S0040-4039(99)01847-X

Reference yield:

: 61-90-5,21675-61-6,25248-98-0,70-45-1
L-leucine

: 258833-69-1
(S)-2-[5-((R)-1-Benzyloxycarbonylamino-2-hydroxy-ethyl)-pyrazol-1-yl]-4-methyl-pentanoic acid methyl ester

Guidance literature:: Multi-step reaction with 4 steps

1.1: 4 h / 60 °C

2.1: NaOCl; KOH / 2 h / 90 °C

2.2: toluene; aq. HCl / 0.5 h / 80 °C

2.3: 62 percent / Et₂NH / ethanol

3.1: 70 percent / Na₂CO₃ / methanol / 12 h / 65 °C

4.1: 90 percent / PTSA / 48 h / Heating

With potassium hydroxide; sodium hypochlorite; sodium carbonate; toluene-4-sulfonic acid; In methanol; 1.1: Addition / 2.1: Oxidation / 2.2: hydrazonolysis / 2.3: Hydrolysis / 3.1: Cyclization / 4.1: Esterification;
DOI:10.1016/S0040-4039(99)01847-X

Reference yield:

: 26117-20-4
N-carbamoyl-L-leucine

: 258833-69-1
(S)-2-[5-((R)-1-Benzyloxycarbonylamino-2-hydroxy-ethyl)-pyrazol-1-yl]-4-methyl-pentanoic acid methyl ester

Guidance literature:: Multi-step reaction with 3 steps

1.1: NaOCl; KOH / 2 h / 90 °C

1.2: toluene; aq. HCl / 0.5 h / 80 °C

1.3: 62 percent / Et₂NH / ethanol

2.1: 70 percent / Na₂CO₃ / methanol / 12 h / 65 °C

3.1: 90 percent / PTSA / 48 h / Heating

With potassium hydroxide; sodium hypochlorite; sodium carbonate; toluene-4-sulfonic acid; In methanol; 1.1: Oxidation / 1.2: hydrazonolysis / 1.3: Hydrolysis / 2.1: Cyclization / 3.1: Esterification;
DOI:10.1016/S0040-4039(99)01847-X