(2R,4R,5R,6R)-6-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-3-oxo-tetrahydro-pyran-2-carboxylic acid methyl ester

Base Information

• Chemical Name: (2R,4R,5R,6R)-6-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-3-oxo-tetrahydro-pyran-2-carboxylic acid methyl ester
• CAS No.: 188003-41-0
• Molecular Formula: C₂₄H₃₂O₉
• Molecular Weight: 464.513

Synonyms:(2R,4R,5R,6R)-6-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-3-oxo-tetrahydro-pyran-2-carboxylic acid methyl ester

Chemical Property of (2R,4R,5R,6R)-6-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-3-oxo-tetrahydro-pyran-2-carboxylic acid methyl ester

Chemical Property:

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Technology Process of (2R,4R,5R,6R)-6-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-3-oxo-tetrahydro-pyran-2-carboxylic acid methyl ester

There total 6 articles about (2R,4R,5R,6R)-6-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-3-oxo-tetrahydro-pyran-2-carboxylic 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:

O1-benzyl-β-D-glucopyranuronic acid methyl ester (108852-23-9) → (2R,4R,5R,6R)-6-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-3-oxo-tetrahydro-pyran-2-carboxylic acid methyl ester (188003-41-0)

Guidance literature:

Multi-step reaction with 5 steps

1: pyridine / 12 h / Ambient temperature

2: 90 percent / DBU / CH₂Cl₂ / Ambient temperature

3: NBS, H₂O / tetrahydrofuran / 12 h / Ambient temperature

4: 67 percent / Ag₂O / dimethylformamide; tetrahydrofuran / 7 h / Ambient temperature

5: Sc(OTf)3 / CDCl₃ / 0.5 h / Ambient temperature

With pyridine; N-Bromosuccinimide; water; 1,8-diazabicyclo[5.4.0]undec-7-ene; silver(l) oxide; scandium tris(trifluoromethanesulfonate); In tetrahydrofuran; chloroform-d1; dichloromethane; N,N-dimethyl-formamide;

DOI:10.1016/S0040-4039(96)02514-2

Reference yield:

methyl (benzyl 2,3,4-tri-O-acetyl-β-D-glucopyranosid)uronate (3080-47-5) → (2R,4R,5R,6R)-6-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-3-oxo-tetrahydro-pyran-2-carboxylic acid methyl ester (188003-41-0)

Guidance literature:

Multi-step reaction with 6 steps

1: NaOMe / methanol / Ambient temperature

2: pyridine / 12 h / Ambient temperature

3: 90 percent / DBU / CH₂Cl₂ / Ambient temperature

4: NBS, H₂O / tetrahydrofuran / 12 h / Ambient temperature

5: 67 percent / Ag₂O / dimethylformamide; tetrahydrofuran / 7 h / Ambient temperature

6: Sc(OTf)3 / CDCl₃ / 0.5 h / Ambient temperature

With pyridine; N-Bromosuccinimide; water; sodium methylate; 1,8-diazabicyclo[5.4.0]undec-7-ene; silver(l) oxide; scandium tris(trifluoromethanesulfonate); In tetrahydrofuran; methanol; chloroform-d1; dichloromethane; N,N-dimethyl-formamide;

DOI:10.1016/S0040-4039(96)02514-2

Reference yield:

(4S,5R,6R)-6-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-5,6-dihydro-4H-pyran-2-carboxylic acid methyl ester (188003-25-0) → (2R,4R,5R,6R)-6-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-3-oxo-tetrahydro-pyran-2-carboxylic acid methyl ester (188003-41-0)

Guidance literature:

Multi-step reaction with 3 steps

1: NBS, H₂O / tetrahydrofuran / 12 h / Ambient temperature

2: 67 percent / Ag₂O / dimethylformamide; tetrahydrofuran / 7 h / Ambient temperature

3: Sc(OTf)3 / CDCl₃ / 0.5 h / Ambient temperature

With N-Bromosuccinimide; water; silver(l) oxide; scandium tris(trifluoromethanesulfonate); In tetrahydrofuran; chloroform-d1; N,N-dimethyl-formamide;

DOI:10.1016/S0040-4039(96)02514-2

upstream raw materials:

(1S,3R,4R,5R,6S)-3-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-2,7-dioxa-bicyclo[4.1.0]heptane-1-carboxylic acid methyl ester

O¹-benzyl-β-D-glucopyranuronic acid methyl ester

methyl (benzyl 2,3,4-tri-O-acetyl-β-D-glucopyranosid)uronate

(4S,5R,6R)-6-Benzyloxy-4,5-bis-(2,2-dimethyl-propionyloxy)-5,6-dihydro-4H-pyran-2-carboxylic acid methyl ester

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