(E)-(4R,5S)-4-Benzyloxy-5-hydroxy-hex-2-enoic acid (S)-2-[(E)-(1S,2R)-2-benzyloxy-1-methyl-4-(2,2,2-trichloro-ethoxycarbonyl)-but-3-enyloxycarbonyl]-1-methyl-ethyl ester

Base Information

• Chemical Name: (E)-(4R,5S)-4-Benzyloxy-5-hydroxy-hex-2-enoic acid (S)-2-[(E)-(1S,2R)-2-benzyloxy-1-methyl-4-(2,2,2-trichloro-ethoxycarbonyl)-but-3-enyloxycarbonyl]-1-methyl-ethyl ester
• CAS No.: 434938-27-9
• Molecular Formula: C₃₂H₃₇Cl₃O₉
• Molecular Weight: 671.999
• Mol file: 434938-27-9.mol

Synonyms:(E)-(4R,5S)-4-Benzyloxy-5-hydroxy-hex-2-enoic acid (S)-2-[(E)-(1S,2R)-2-benzyloxy-1-methyl-4-(2,2,2-trichloro-ethoxycarbonyl)-but-3-enyloxycarbonyl]-1-methyl-ethyl ester

Chemical Property of (E)-(4R,5S)-4-Benzyloxy-5-hydroxy-hex-2-enoic acid (S)-2-[(E)-(1S,2R)-2-benzyloxy-1-methyl-4-(2,2,2-trichloro-ethoxycarbonyl)-but-3-enyloxycarbonyl]-1-methyl-ethyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (E)-(4R,5S)-4-Benzyloxy-5-hydroxy-hex-2-enoic acid (S)-2-[(E)-(1S,2R)-2-benzyloxy-1-methyl-4-(2,2,2-trichloro-ethoxycarbonyl)-but-3-enyloxycarbonyl]-1-methyl-ethyl ester

There total 1 articles about (E)-(4R,5S)-4-Benzyloxy-5-hydroxy-hex-2-enoic acid (S)-2-[(E)-(1S,2R)-2-benzyloxy-1-methyl-4-(2,2,2-trichloro-ethoxycarbonyl)-but-3-enyloxycarbonyl]-1-methyl-ethyl 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: 84.0%

(E)-(4R,5S)-4-Benzyloxy-5-(tert-butyl-dimethyl-silanyloxy)-hex-2-enoic acid (S)-2-[(E)-(1S,2R)-2-benzyloxy-1-methyl-4-(2,2,2-trichloro-ethoxycarbonyl)-but-3-enyloxycarbonyl]-1-methyl-ethyl ester (434938-26-8) → (E)-(4R,5S)-4-Benzyloxy-5-hydroxy-hex-2-enoic acid (S)-2-[(E)-(1S,2R)-2-benzyloxy-1-methyl-4-(2,2,2-trichloro-ethoxycarbonyl)-but-3-enyloxycarbonyl]-1-methyl-ethyl ester (434938-27-9)

Guidance literature:

With water; acetic acid; In tetrahydrofuran; at 80 ℃; for 12h;

DOI:10.3987/com-01-9391

Reference yield: 96.0%

(E)-(4R,5S)-4-Benzyloxy-5-hydroxy-hex-2-enoic acid (S)-2-[(E)-(1S,2R)-2-benzyloxy-1-methyl-4-(2,2,2-trichloro-ethoxycarbonyl)-but-3-enyloxycarbonyl]-1-methyl-ethyl ester (434938-27-9) → (E)-(4R,5S)-4-Benzyloxy-5-hydroxy-hex-2-enoic acid (S)-2-((E)-(1S,2R)-2-benzyloxy-4-carboxy-1-methyl-but-3-enyloxycarbonyl)-1-methyl-ethyl ester (434938-14-4)

Guidance literature:

With sodium acetate; acetic acid; zinc; In tetrahydrofuran; at 20 ℃; for 3.5h;

DOI:10.3987/com-01-9391

Reference yield:

(E)-(4R,5S)-4-Benzyloxy-5-hydroxy-hex-2-enoic acid (S)-2-[(E)-(1S,2R)-2-benzyloxy-1-methyl-4-(2,2,2-trichloro-ethoxycarbonyl)-but-3-enyloxycarbonyl]-1-methyl-ethyl ester (434938-27-9) → (-)-dibenzyl macrosphelide A (294198-57-5)

Guidance literature:

Multi-step reaction with 2 steps

1.1: 96 percent / Zn; AcOH; AcONa / tetrahydrofuran / 3.5 h / 20 °C

2.1: 2,4,6-trichlorobenzoyl chloride; Et₃N / tetrahydrofuran / 2 h

2.2: 63 percent / DMAP / tetrahydrofuran; toluene / 1 h / 100 °C

With 2,4,6-trichlorobenzoyl chloride; sodium acetate; acetic acid; triethylamine; zinc; In tetrahydrofuran; 2.1: Yamaguchi-macrolactonization;

DOI:10.3987/com-01-9391

upstream raw materials:

(E)-(4R,5S)-4-Benzyloxy-5-(tert-butyl-dimethyl-silanyloxy)-hex-2-enoic acid (S)-2-[(E)-(1S,2R)-2-benzyloxy-1-methyl-4-(2,2,2-trichloro-ethoxycarbonyl)-but-3-enyloxycarbonyl]-1-methyl-ethyl ester

Downstream raw materials:

(E)-(4R,5S)-4-Benzyloxy-5-hydroxy-hex-2-enoic acid (S)-2-((E)-(1S,2R)-2-benzyloxy-4-carboxy-1-methyl-but-3-enyloxycarbonyl)-1-methyl-ethyl ester

(-)-dibenzyl macrosphelide A