[4S(4α,5β,5aβ,5bα,8aα)]-hexahydro-4,5-di(t-butyldiphenylsilyloxy)-pyrrolo[1,2-b]furo[2,3-d]isoxazol-7(3H)one

Base Information

• Chemical Name: [4S(4α,5β,5aβ,5bα,8aα)]-hexahydro-4,5-di(t-butyldiphenylsilyloxy)-pyrrolo[1,2-b]furo[2,3-d]isoxazol-7(3H)one
• CAS No.: 260369-34-4
• Molecular Formula: C₄₀H₄₇NO₅Si₂
• Molecular Weight: 677.988
• Mol file: 260369-34-4.mol

Synonyms:[4S(4α,5β,5aβ,5bα,8aα)]-hexahydro-4,5-di(t-butyldiphenylsilyloxy)-pyrrolo[1,2-b]furo[2,3-d]isoxazol-7(3H)one

Chemical Property of [4S(4α,5β,5aβ,5bα,8aα)]-hexahydro-4,5-di(t-butyldiphenylsilyloxy)-pyrrolo[1,2-b]furo[2,3-d]isoxazol-7(3H)one

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of [4S(4α,5β,5aβ,5bα,8aα)]-hexahydro-4,5-di(t-butyldiphenylsilyloxy)-pyrrolo[1,2-b]furo[2,3-d]isoxazol-7(3H)one

There total 3 articles about [4S(4α,5β,5aβ,5bα,8aα)]-hexahydro-4,5-di(t-butyldiphenylsilyloxy)-pyrrolo[1,2-b]furo[2,3-d]isoxazol-7(3H)one 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: 92.0%

[2'S-[2'α,3'α,4'β(5R*)]]-5-[1'-trimethylsilyloxy-3',4'-di(t-butyldiphenylsilyloxy)-2'-pyrrolidinyl]-2(5H)-furanone (260369-33-3) → [4S(4α,5β,5aβ,5bα,8aα)]-hexahydro-4,5-di(t-butyldiphenylsilyloxy)-pyrrolo[1,2-b]furo[2,3-d]isoxazol-7(3H)one (260369-34-4)

Guidance literature:

[2'S-[2'α,3'α,4'β(5R*)]]-5-[1'-trimethylsilyloxy-3',4'-di(t-butyldiphenylsilyloxy)-2'-pyrrolidinyl]-2(5H)-furanone; With trifluoroacetic acid; In dichloromethane; water; at 20 ℃; for 0.75h;

With silica gel; In cyclohexane; ethyl acetate;

DOI:10.1016/S0040-4020(99)01001-7

Reference yield: 56.0%

[2'S-[2'α,3'α,4'β(5RS*)]]-5-[1'-trimethylsilyloxy-3',4'-di(t-butyldiphenylsilyloxy)-2'-pyrrolidinyl]-2(5H)-furanone → [2'S-[2'α,3'α,4'β(5S*)]]-5-[1'-hydroxy-3',4'-di(t-butyldiphenylsilyloxy)-2'-pyrrolidinyl]-2(5H)-furanone + [4S(4α,5β,5aβ,5bα,8aα)]-hexahydro-4,5-di(t-butyldiphenylsilyloxy)-pyrrolo[1,2-b]furo[2,3-d]isoxazol-7(3H)one (260369-34-4)

Guidance literature:

[2'S-[2'α,3'α,4'β(5RS*)]]-5-[1'-trimethylsilyloxy-3',4'-di(t-butyldiphenylsilyloxy)-2'-pyrrolidinyl]-2(5H)-furanone; With trifluoroacetic acid; In dichloromethane; water; at 20 ℃;

With silica gel; In cyclohexane; ethyl acetate;

DOI:10.1016/S0040-4020(99)01001-7

Reference yield:

(3S,4S)-(+)-3,4-bis<(tert-butyldiphenylsilyl)oxy>-3,4-dihydro-2H-pyrrole 1-oxide (154878-81-6) → [4S(4α,5β,5aβ,5bα,8aα)]-hexahydro-4,5-di(t-butyldiphenylsilyloxy)-pyrrolo[1,2-b]furo[2,3-d]isoxazol-7(3H)one (260369-34-4)

Guidance literature:

Multi-step reaction with 2 steps

1.1: 58 percent / trimethylsilyl triflate / CH₂Cl₂ / 1.5 h / -20 °C

2.1: trifluoroacetic acid / CH₂Cl₂; H₂O / 0.75 h / 20 °C

2.2: 92 percent / silica gel / cyclohexane; ethyl acetate

With trimethylsilyl trifluoromethanesulfonate; trifluoroacetic acid; In dichloromethane; water; 1.1: Condensation / 2.1: Hydrolysis / 2.2: Cyclization;

DOI:10.1016/S0040-4020(99)01001-7

upstream raw materials:

[2'S-[2'α,3'α,4'β(5R*)]]-5-[1'-trimethylsilyloxy-3',4'-di(t-butyldiphenylsilyloxy)-2'-pyrrolidinyl]-2(5H)-furanone

(3S,4S)-(+)-3,4-bis<(tert-butyldiphenylsilyl)oxy>-3,4-dihydro-2H-pyrrole 1-oxide

Downstream raw materials:

(3aR,3bS,4S,5S,7aR)-4,5-Bis-(tert-butyl-diphenyl-silanyloxy)-octahydro-3,7-dioxa-6a-aza-cyclopenta[a]pentalen-2-ol