(4R,5S)-5-((2R,3S,6S)-3,4-Dimethyl-5,7-dioxo-2-phenyl-[1,4]oxazepan-6-yl)-4-ethyl-2-methoxy-3-oxo-cyclopent-1-enecarboxylic acid methyl ester

Base Information

• Chemical Name: (4R,5S)-5-((2R,3S,6S)-3,4-Dimethyl-5,7-dioxo-2-phenyl-[1,4]oxazepan-6-yl)-4-ethyl-2-methoxy-3-oxo-cyclopent-1-enecarboxylic acid methyl ester
• CAS No.: 128735-68-2
• Molecular Formula: C₂₃H₂₇NO₇
• Molecular Weight: 429.47
• Mol file: 128735-68-2.mol

Synonyms:

Chemical Property of (4R,5S)-5-((2R,3S,6S)-3,4-Dimethyl-5,7-dioxo-2-phenyl-[1,4]oxazepan-6-yl)-4-ethyl-2-methoxy-3-oxo-cyclopent-1-enecarboxylic acid methyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (4R,5S)-5-((2R,3S,6S)-3,4-Dimethyl-5,7-dioxo-2-phenyl-[1,4]oxazepan-6-yl)-4-ethyl-2-methoxy-3-oxo-cyclopent-1-enecarboxylic acid methyl ester

There total 2 articles about (4R,5S)-5-((2R,3S,6S)-3,4-Dimethyl-5,7-dioxo-2-phenyl-[1,4]oxazepan-6-yl)-4-ethyl-2-methoxy-3-oxo-cyclopent-1-enecarboxylic acid methyl 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:

(2R,3S)-3,4-dimethyl-2-phenylperhydro-1,4-oxazepine-5,7-dione (67376-72-1) → (4R,5S)-5-((2R,3S,6S)-3,4-Dimethyl-5,7-dioxo-2-phenyl-[1,4]oxazepan-6-yl)-4-ethyl-2-methoxy-3-oxo-cyclopent-1-enecarboxylic acid methyl ester (128735-68-2,128820-06-4)

Guidance literature:

Multi-step reaction with 2 steps

1: 60 percent / Et₃N / CH₂Cl₂ / 48 h / Heating

With triethylamine; In dichloromethane;

DOI:10.1016/S0040-4039(00)88907-8

Reference yield:

diazomethane (186581-53-3,908094-01-9,334-88-3) + (4R,5S)-5-((2R,3S,6S)-3,4-Dimethyl-5,7-dioxo-2-phenyl-[1,4]oxazepan-6-yl)-4-ethyl-2-hydroxy-3-oxo-cyclopent-1-enecarboxylic acid methyl ester (128735-66-0,128820-94-0,130323-10-3) → (4R,5S)-5-((2R,3S,6S)-3,4-Dimethyl-5,7-dioxo-2-phenyl-[1,4]oxazepan-6-yl)-4-ethyl-2-methoxy-3-oxo-cyclopent-1-enecarboxylic acid methyl ester (128735-68-2,128820-06-4)

Guidance literature:

DOI:10.1016/S0040-4039(00)88907-8 DOI:10.1016/S0040-4039(00)88908-X

Reference yield:

(4R,5S)-5-(3,4-Dimethyl-5,7-dioxo-2-phenyl-[1,4]oxazepan-6-yl)-4-ethyl-2-methoxy-3-oxo-cyclopent-1-enecarboxylic acid methyl ester (128735-68-2,128820-06-4) → (3S,4R,5S)-5-(3,4-Dimethyl-5,7-dioxo-2-phenyl-[1,4]oxazepan-6-yl)-4-ethyl-3-hydroxy-2-methoxy-cyclopent-1-enecarboxylic acid methyl ester

Guidance literature:

With lithium tri-t-butoxyaluminum hydride; at 45 ℃;

DOI:10.1016/S0040-4039(00)88907-8

upstream raw materials:

diazomethane

(4R,5S)-5-((2R,3S,6S)-3,4-Dimethyl-5,7-dioxo-2-phenyl-[1,4]oxazepan-6-yl)-4-ethyl-2-hydroxy-3-oxo-cyclopent-1-enecarboxylic acid methyl ester

(2R,3S)-3,4-dimethyl-2-phenylperhydro-1,4-oxazepine-5,7-dione