Acetic acid (2R,3R,4S,5S,6R)-4,5-diacetoxy-2-[(4aR,6S,7R,8R,8aR)-7-acetylamino-6-methoxy-2-(4-methoxy-phenyl)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-6-benzyloxymethyl-tetrahydro-pyran-3-yl ester

Base Information

• Chemical Name: Acetic acid (2R,3R,4S,5S,6R)-4,5-diacetoxy-2-[(4aR,6S,7R,8R,8aR)-7-acetylamino-6-methoxy-2-(4-methoxy-phenyl)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-6-benzyloxymethyl-tetrahydro-pyran-3-yl ester
• CAS No.: 321540-98-1
• Molecular Formula: C₃₆H₄₅NO₁₅
• Molecular Weight: 731.751

Synonyms:Acetic acid (2R,3R,4S,5S,6R)-4,5-diacetoxy-2-[(4aR,6S,7R,8R,8aR)-7-acetylamino-6-methoxy-2-(4-methoxy-phenyl)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-6-benzyloxymethyl-tetrahydro-pyran-3-yl ester

Chemical Property of Acetic acid (2R,3R,4S,5S,6R)-4,5-diacetoxy-2-[(4aR,6S,7R,8R,8aR)-7-acetylamino-6-methoxy-2-(4-methoxy-phenyl)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-6-benzyloxymethyl-tetrahydro-pyran-3-yl ester

Chemical Property:

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Technology Process of Acetic acid (2R,3R,4S,5S,6R)-4,5-diacetoxy-2-[(4aR,6S,7R,8R,8aR)-7-acetylamino-6-methoxy-2-(4-methoxy-phenyl)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-6-benzyloxymethyl-tetrahydro-pyran-3-yl ester

There total 8 articles about Acetic acid (2R,3R,4S,5S,6R)-4,5-diacetoxy-2-[(4aR,6S,7R,8R,8aR)-7-acetylamino-6-methoxy-2-(4-methoxy-phenyl)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-6-benzyloxymethyl-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: 51.0%

2,3,4-tri-O-acetyl-6-O-benzyl-α-D-galactopyranosyl bromide (290330-34-6) + methyl 2-acetamido-2-deoxy-4,6-O-(p-methoxybenzylidene)-α-D-galactopyranoside (188666-34-4) → Acetic acid (2R,3R,4S,5S,6R)-4,5-diacetoxy-2-[(4aR,6S,7R,8R,8aR)-7-acetylamino-6-methoxy-2-(4-methoxy-phenyl)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-6-benzyloxymethyl-tetrahydro-pyran-3-yl ester (321540-98-1)

Guidance literature:

With 4 A molecular sieve; mercury(II) cyanide; mercury dibromide; In 1,2-dichloro-ethane; at 20 ℃;

DOI:10.1016/S0008-6215(00)00211-1

Reference yield:

6-O-benzyl-1,2:3,4-di-O-isopropylidene-α-D-galactopyranose (35526-05-7) → Acetic acid (2R,3R,4S,5S,6R)-4,5-diacetoxy-2-[(4aR,6S,7R,8R,8aR)-7-acetylamino-6-methoxy-2-(4-methoxy-phenyl)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-6-benzyloxymethyl-tetrahydro-pyran-3-yl ester (321540-98-1)

Guidance literature:

Multi-step reaction with 4 steps

1: 75 percent / HCl / dioxane / Heating

2: 76 percent / pyridine / 3 h / 65 - 70 °C

3: 59 percent / BiBr₃; Me₃SiBr / CH₂Cl₂ / 12 h / 20 °C

4: 51 percent / Hg(CN)2; HgBr₂; 4 Angstroem molecular sieves / 1,2-dichloro-ethane / 20 °C

With hydrogenchloride; bismuth(III) bromide; trimethylsilyl bromide; 4 A molecular sieve; mercury(II) cyanide; mercury dibromide; In 1,4-dioxane; pyridine; dichloromethane; 1,2-dichloro-ethane;

DOI:10.1016/S0008-6215(00)00211-1

Reference yield:

O6-Benzyl-α-D-galactopyranose (20675-63-2) → Acetic acid (2R,3R,4S,5S,6R)-4,5-diacetoxy-2-[(4aR,6S,7R,8R,8aR)-7-acetylamino-6-methoxy-2-(4-methoxy-phenyl)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-6-benzyloxymethyl-tetrahydro-pyran-3-yl ester (321540-98-1)

Guidance literature:

Multi-step reaction with 3 steps

1: 76 percent / pyridine / 3 h / 65 - 70 °C

2: 59 percent / BiBr₃; Me₃SiBr / CH₂Cl₂ / 12 h / 20 °C

3: 51 percent / Hg(CN)2; HgBr₂; 4 Angstroem molecular sieves / 1,2-dichloro-ethane / 20 °C

With bismuth(III) bromide; trimethylsilyl bromide; 4 A molecular sieve; mercury(II) cyanide; mercury dibromide; In pyridine; dichloromethane; 1,2-dichloro-ethane;

DOI:10.1016/S0008-6215(00)00211-1

upstream raw materials:

2,3,4-tri-O-acetyl-6-O-benzyl-α-D-galactopyranosyl bromide

methyl 2-acetamido-2-deoxy-4,6-O-(p-methoxybenzylidene)-α-D-galactopyranoside

6-O-benzyl-1,2:3,4-di-O-isopropylidene-α-D-galactopyranose

O⁶-Benzyl-α-D-galactopyranose

Downstream raw materials:

methyl (2,3,4-tri-O-acetyl-6-O-benzyl-β-D-galactopyranosyl)-(1->3)-2-acetamido-2-deoxy-α-D-galactopyranoside

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