(2R,3R,4S,4aS,8aS)-3,4-Bis-benzyloxy-2-benzyloxymethyl-6-methyl-2,3,4,4a,8,8a-hexahydro-pyrano[3,2-b]pyran

Base Information

• Chemical Name: (2R,3R,4S,4aS,8aS)-3,4-Bis-benzyloxy-2-benzyloxymethyl-6-methyl-2,3,4,4a,8,8a-hexahydro-pyrano[3,2-b]pyran
• CAS No.: 212395-03-4
• Molecular Formula: C₃₁H₃₄O₅
• Molecular Weight: 486.608
• Mol file: 212395-03-4.mol

Synonyms:(2R,3R,4S,4aS,8aS)-3,4-Bis-benzyloxy-2-benzyloxymethyl-6-methyl-2,3,4,4a,8,8a-hexahydro-pyrano[3,2-b]pyran

Chemical Property of (2R,3R,4S,4aS,8aS)-3,4-Bis-benzyloxy-2-benzyloxymethyl-6-methyl-2,3,4,4a,8,8a-hexahydro-pyrano[3,2-b]pyran

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (2R,3R,4S,4aS,8aS)-3,4-Bis-benzyloxy-2-benzyloxymethyl-6-methyl-2,3,4,4a,8,8a-hexahydro-pyrano[3,2-b]pyran

There total 6 articles about (2R,3R,4S,4aS,8aS)-3,4-Bis-benzyloxy-2-benzyloxymethyl-6-methyl-2,3,4,4a,8,8a-hexahydro-pyrano[3,2-b]pyran 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: 87.0%

(2S,3S,4S,5R,6R)-2-Allyl-4,5-bis-benzyloxy-6-benzyloxymethyl-3-isopropenyloxy-tetrahydro-pyran (212395-02-3) → (2R,3R,4S,4aS,8aS)-3,4-Bis-benzyloxy-2-benzyloxymethyl-6-methyl-2,3,4,4a,8,8a-hexahydro-pyrano[3,2-b]pyran (212395-03-4)

Guidance literature:

bis[1,1-di(trifluoromethyl)ethoxy][(2,6-diisopropylphenyl)imino](2-methyl-2-phenylpropylidene)molybdenum;

DOI:10.1016/S0040-4020(02)00057-1

Reference yield: 65.0%

3-C-(2-O-acetyl-3,4,6-tri-O-benzyl-β-D-glycopyranosyl)propene (193546-84-8) + 1,1-dibromomethane (74-95-3) → (2R,3R,4S,4aS,8aS)-3,4-Bis-benzyloxy-2-benzyloxymethyl-6-methyl-2,3,4,4a,8,8a-hexahydro-pyrano[3,2-b]pyran (212395-03-4) + (2S,3S,4S,5R,6R)-2-Allyl-4,5-bis-benzyloxy-6-benzyloxymethyl-3-isopropenyloxy-tetrahydro-pyran (212395-02-3)

Guidance literature:

With titanium tetrachloride; lead(II) chloride; zinc; Yields of byproduct given;

DOI:10.1021/jo980996k

Reference yield:

1,1-Dibromoethane (557-91-5) + 3-C-(2-O-acetyl-3,4,6-tri-O-benzyl-β-D-glycopyranosyl)propene (193546-84-8) → C34H40O5 + (2R,3R,4S,4aS,8aS)-3,4-Bis-benzyloxy-2-benzyloxymethyl-6-methyl-2,3,4,4a,8,8a-hexahydro-pyrano[3,2-b]pyran (212395-03-4)

Guidance literature:

With N,N,N,N,-tetramethylethylenediamine; lead(II) chloride; zinc; titanium tetrachloride; In tetrahydrofuran; dichloromethane; at 65 ℃; for 2h; Title compound not separated from byproducts.;

DOI:10.1021/ja073880r

upstream raw materials:

(2S,3S,4S,5R,6R)-2-Allyl-4,5-bis-benzyloxy-6-benzyloxymethyl-3-isopropenyloxy-tetrahydro-pyran

3-C-(2-O-acetyl-3,4,6-tri-O-benzyl-β-D-glycopyranosyl)propene

1,1-dibromomethane

1,1-Dibromoethane

Downstream raw materials:

(2S,3R,4aS,6R,7R,8S,8aS)-2-Allyl-7,8-bis-benzyloxy-6-benzyloxymethyl-2-methyl-octahydro-pyrano[3,2-b]pyran-3-ol

(2R,3S,4aS,6R,7R,8S,8aS)-2-Allyl-7,8-bis-benzyloxy-6-benzyloxymethyl-2-methyl-octahydro-pyrano[3,2-b]pyran-3-ol

Acetic acid (2S,3R,4aS,6R,7R,8S,8aS)-2-allyl-7,8-bis-benzyloxy-6-benzyloxymethyl-2-methyl-octahydro-pyrano[3,2-b]pyran-3-yl ester