Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-[(S)-2-hydroxy-3-(toluene-4-sulfonyloxy)-propyl]-6-methoxy-tetrahydro-pyran-3-yl ester

Base Information

• Chemical Name: Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-[(S)-2-hydroxy-3-(toluene-4-sulfonyloxy)-propyl]-6-methoxy-tetrahydro-pyran-3-yl ester
• CAS No.: 202338-96-3
• Molecular Formula: C₃₂H₃₈O₁₀S
• Molecular Weight: 614.714
• Mol file: 202338-96-3.mol

Synonyms:Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-[(S)-2-hydroxy-3-(toluene-4-sulfonyloxy)-propyl]-6-methoxy-tetrahydro-pyran-3-yl ester

Chemical Property of Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-[(S)-2-hydroxy-3-(toluene-4-sulfonyloxy)-propyl]-6-methoxy-tetrahydro-pyran-3-yl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-[(S)-2-hydroxy-3-(toluene-4-sulfonyloxy)-propyl]-6-methoxy-tetrahydro-pyran-3-yl ester

There total 5 articles about Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-[(S)-2-hydroxy-3-(toluene-4-sulfonyloxy)-propyl]-6-methoxy-tetrahydro-pyran-3-yl 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: 67.0%

p-toluenesulfonyl chloride (98-59-9) + Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-((S)-2,3-dihydroxy-propyl)-6-methoxy-tetrahydro-pyran-3-yl ester (202338-93-0) → Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-[(S)-2-hydroxy-3-(toluene-4-sulfonyloxy)-propyl]-6-methoxy-tetrahydro-pyran-3-yl ester (202338-96-3)

Guidance literature:

With dmap; In pyridine; for 0.5h; Ambient temperature;

DOI:10.1271/bbb.61.2019

Reference yield:

(2R,3R,4S,5R,6S)-4,5-Bis-benzyloxy-2-((S)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-6-methoxy-tetrahydro-pyran-3-ol (202338-83-8) → Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-[(S)-2-hydroxy-3-(toluene-4-sulfonyloxy)-propyl]-6-methoxy-tetrahydro-pyran-3-yl ester (202338-96-3)

Guidance literature:

Multi-step reaction with 3 steps

1: 92 percent / pyridine / 3 h / Ambient temperature

2: 93 percent / TFA, H₂O / CH₂Cl₂ / 24 h

3: 67 percent / DMAP / pyridine / 0.5 h / Ambient temperature

With dmap; water; trifluoroacetic acid; In pyridine; dichloromethane;

DOI:10.1271/bbb.61.2019

Reference yield:

Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-((S)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-6-methoxy-tetrahydro-pyran-3-yl ester (202338-88-3) → Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-[(S)-2-hydroxy-3-(toluene-4-sulfonyloxy)-propyl]-6-methoxy-tetrahydro-pyran-3-yl ester (202338-96-3)

Guidance literature:

Multi-step reaction with 2 steps

1: 93 percent / TFA, H₂O / CH₂Cl₂ / 24 h

2: 67 percent / DMAP / pyridine / 0.5 h / Ambient temperature

With dmap; water; trifluoroacetic acid; In pyridine; dichloromethane;

DOI:10.1271/bbb.61.2019

upstream raw materials:

p-toluenesulfonyl chloride

Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-((S)-2,3-dihydroxy-propyl)-6-methoxy-tetrahydro-pyran-3-yl ester

(2R,3R,4S,5R,6S)-4,5-Bis-benzyloxy-2-((S)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-6-methoxy-tetrahydro-pyran-3-ol

Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-((S)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-6-methoxy-tetrahydro-pyran-3-yl ester

Downstream raw materials:

Acetic acid (2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-6-methoxy-2-[(S)-2-methoxymethoxy-3-(toluene-4-sulfonyloxy)-propyl]-tetrahydro-pyran-3-yl ester

Toluene-4-sulfonic acid (S)-3-((2R,3R,4S,5R,6S)-4,5-bis-benzyloxy-3-hydroxy-6-methoxy-tetrahydro-pyran-2-yl)-2-methoxymethoxy-propyl ester