(2S,4aR,6R,8R,8aR)-6-Methoxy-7-methylene-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-ol

Base Information

• Chemical Name: (2S,4aR,6R,8R,8aR)-6-Methoxy-7-methylene-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-ol
• CAS No.: 210688-81-6
• Molecular Formula: C₁₅H₁₈O₅
• Molecular Weight: 278.305
• Mol file: 210688-81-6.mol

Synonyms:(2S,4aR,6R,8R,8aR)-6-Methoxy-7-methylene-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-ol

Chemical Property of (2S,4aR,6R,8R,8aR)-6-Methoxy-7-methylene-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-ol

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (2S,4aR,6R,8R,8aR)-6-Methoxy-7-methylene-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-ol

There total 4 articles about (2S,4aR,6R,8R,8aR)-6-Methoxy-7-methylene-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-ol 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: 88.0%

(2S,4aR,6R,8R,8aR)-6-Methoxy-8-(4-methoxy-benzyloxy)-7-methylene-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxine (210688-93-0) → (2S,4aR,6R,8R,8aR)-6-Methoxy-7-methylene-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-ol (210688-81-6)

Guidance literature:

With water; 2,3-dicyano-5,6-dichloro-p-benzoquinone; In dichloromethane;

DOI:10.1055/s-1998-3138

Reference yield:

(2S,4aR,6R,7R,8R,8aS)-6-Methoxy-8-(4-methoxy-benzyloxy)-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-ol (210688-92-9) → (2S,4aR,6R,8R,8aR)-6-Methoxy-7-methylene-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-ol (210688-81-6)

Guidance literature:

Multi-step reaction with 3 steps

1: 1.) (COCl)2, DMSO, 2.) Et₃N / 1.) CH₂Cl₂, 2.) CH₂Cl₂

2: 90 percent / pyridine / CH₂Cl₂; tetrahydrofuran

3: 88 percent / DDQ, H₂O / CH₂Cl₂

With pyridine; oxalyl dichloride; water; dimethyl sulfoxide; triethylamine; 2,3-dicyano-5,6-dichloro-p-benzoquinone; In tetrahydrofuran; dichloromethane;

DOI:10.1055/s-1998-3138

Reference yield:

(2S,4aR,6R,8S,8aS)-6-Methoxy-8-(4-methoxy-benzyloxy)-2-phenyl-tetrahydro-pyrano[3,2-d][1,3]dioxin-7-one → (2S,4aR,6R,8R,8aR)-6-Methoxy-7-methylene-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-ol (210688-81-6)

Guidance literature:

Multi-step reaction with 2 steps

1: 90 percent / pyridine / CH₂Cl₂; tetrahydrofuran

2: 88 percent / DDQ, H₂O / CH₂Cl₂

With pyridine; water; 2,3-dicyano-5,6-dichloro-p-benzoquinone; In tetrahydrofuran; dichloromethane;

DOI:10.1055/s-1998-3138

upstream raw materials:

(2S,4aR,6R,8R,8aR)-6-Methoxy-8-(4-methoxy-benzyloxy)-7-methylene-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxine

(2S,4aR,6R,7R,8R,8aS)-6-Methoxy-8-(4-methoxy-benzyloxy)-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-ol

methyl 4,6-O-(S)-benzylidene-β-D-galactopyranoside

Downstream raw materials:

(2S,4aR,6R,7R,8R,8aR)-7-((3aR,4S,6S,7R,7aS)-7-Hydroxy-2,2,4-trimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-ylmethyl)-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-ol