LACTOSE OCTAACETATE

Base Information

• Chemical Name: LACTOSE OCTAACETATE
• CAS No.: 6291-42-5
• Molecular Formula: C₂₈H₃₈O₁₉
• Molecular Weight: 678.598
• Hs Code.: 2940000080
• Mol file: 6291-42-5.mol

Synonyms:Glucopyranose,4-O-b-D-galactopyranosyl-, octaacetate, b-D- (8CI); Lactose,octaacetate, b- (6CI,7CI); b-D-Glucopyranose, 4-O-(2,3,4,6-tetra-O-acetyl-b-D-galactopyranosyl)-,tetraacetate (9CI); 4-O-(2,3,4,6-Tetra-O-acetyl-b-D-galactopyranosyl)-1,2,3,6-tetra-O-acetyl-b-D-glucopyranoside;Lactose octaacetate; NSC 1690; b-D-Lactopyranose octaacetate; b-D-Lactoseoctaacetate; b-Lactose octaacetate; b-Octaacetyllactose

Chemical Property of LACTOSE OCTAACETATE

Chemical Property:

• Vapor Pressure: 1.64E-18mmHg at 25°C
• Melting Point: 83-85oC
• Boiling Point: 683.1°C at 760 mmHg
• Flash Point: 281.2°C
• PSA: 238.09000
• Density: 1.37g/cm³
• LogP: -0.83080
• Storage Temp.: −20°C
• Solubility.: Soluble in chloroform

Purity/Quality:

99%, ^*data from raw suppliers

Lactose octaacetate ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Uses: Lactose octaacetate is used as pharmaceutical intermediates.

Technology Process of LACTOSE OCTAACETATE

There total 1 articles about LACTOSE OCTAACETATE 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:

acetic anhydride (108-24-7) + syringic aldehyde (134-96-3) + 2,3,6,2',3',4',6'-hepta-O-acetyl-α-D-maltosyl bromide (4753-07-5,5160-10-1,14206-57-6,14227-66-8,14257-35-3,42385-75-1,67650-37-7,68682-05-3,69308-57-2,69349-74-2,70223-96-0,70223-97-1,71276-38-5,85248-99-3,118493-15-5,120575-76-0) → 4-acetoxy-3,5-dimethoxybenzaldehyde (53669-33-3) + 1,2,3,6,2',3',4',6'-octa-O-acetylmaltose (3616-19-1,5328-50-7,5346-90-7,6291-42-5,6920-00-9,20764-63-0,20880-65-3,22352-19-8,23973-20-8,32447-69-1,34213-32-6,52554-32-2,53956-64-2,56907-29-0,56994-12-8,56994-13-9,57128-38-8,67650-36-6,68036-17-9,68036-19-1,78215-50-6,78215-51-7,79549-48-7,80446-82-8,85249-04-3,93221-83-1,93779-27-2,111407-83-1,111407-84-2,111407-85-3,120328-65-6,123809-59-6,132341-46-9,132341-47-0,132341-49-2,145307-94-4,20880-60-8) + 3,5-Dimethoxy-4-4)-2,3,6-tri-O-acetyl-β-D-glucopyranosyloxy>benzaldehyde (141243-30-3)

Guidance literature:

With pyridine; sodium hydroxide; Yield given. Multistep reaction; 1) acetone, r.t., 2) 90 deg C, 50 min.;

DOI:10.1016/S0008-6215(00)90495-6

Reference yield: 95.0%

thiophenol (108-98-5) + 1',2',3',6',2,3,4,6-octa-O-acetyl-β-D-lactose (3616-19-1,5328-50-7,5346-90-7,6291-42-5,6920-00-9,20764-63-0,20880-60-8,20880-65-3,22352-19-8,23973-20-8,32447-69-1,34213-32-6,52554-32-2,53956-64-2,56907-29-0,56994-12-8,56994-13-9,57128-38-8,67650-36-6,68036-17-9,68036-19-1,78215-50-6,78215-51-7,79549-48-7,80446-82-8,85249-04-3,93221-83-1,93779-27-2,111407-83-1,111407-84-2,111407-85-3,120328-65-6,123809-59-6,132341-46-9,132341-47-0,132341-49-2,145307-94-4) → phenyl 2,3,6-tri-O-acetyl-4-O-(2',3',4',6'-tetra-O-acetyl-β-D-galactopyranosyl)-1-thio-β-D-glucopyranoside (5346-81-6,28022-14-2,28022-13-1)

Guidance literature:

With molybdenium(VI) dioxodichloride; In dichloromethane; at 20 ℃; for 14h;

DOI:10.1021/ol062375g

Reference yield: 95.0%

para-thiocresol (106-45-6) + 1',2',3',6',2,3,4,6-octa-O-acetyl-β-D-lactose (3616-19-1,5328-50-7,5346-90-7,6291-42-5,6920-00-9,20764-63-0,20880-60-8,20880-65-3,22352-19-8,23973-20-8,32447-69-1,34213-32-6,52554-32-2,53956-64-2,56907-29-0,56994-12-8,56994-13-9,57128-38-8,67650-36-6,68036-17-9,68036-19-1,78215-50-6,78215-51-7,79549-48-7,80446-82-8,85249-04-3,93221-83-1,93779-27-2,111407-83-1,111407-84-2,111407-85-3,120328-65-6,123809-59-6,132341-46-9,132341-47-0,132341-49-2,145307-94-4) → p-Tolyl O-(2,3,4,6,-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-2,3,6-tri-O-acetyl-1-thio-β-D-glucopyranoside (29019-41-8)

Guidance literature:

With zirconium(IV) chloride; In dichloromethane; at 20 ℃; for 1h;

DOI:10.1080/00397919908085987

upstream raw materials:

acetic anhydride

syringic aldehyde

2,3,6,2',3',4',6'-hepta-O-acetyl-α-D-maltosyl bromide

Downstream raw materials:

4-nitrophenyl-2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1→4)-2,3,6-tetra-O-acetyl-β-D-glucopyranoside

phenyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1→4)-2,3,6-tri-O-acetyl-α-D-glucopyranoside

phenyl-[O²,O³,O⁶-triacetyl-O⁴-(tetra-O-acetyl-β-D-galactopyranosyl)-α-D-glucopyranoside]

O²,O³,O⁶-Triacetyl-O⁴-(tetra-O-acetyl-β-D-galactopyranosyl)-D-glucose

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