(4S,7R,8S,9S,13Z,16S)-4,8-Bis-{[tert-butyl(dimethyl)silyl]oxy}-5,5,7,9,13-pentamethyl-16-[(E)-1-methyl-2-(2-methyl-1,3-thiazol-4-yl)ethenyl]oxocyclohexadec-13-ene-2,6-dione

Base Information

• Chemical Name: (4S,7R,8S,9S,13Z,16S)-4,8-Bis-{[tert-butyl(dimethyl)silyl]oxy}-5,5,7,9,13-pentamethyl-16-[(E)-1-methyl-2-(2-methyl-1,3-thiazol-4-yl)ethenyl]oxocyclohexadec-13-ene-2,6-dione
• CAS No.: 189453-35-8
• Molecular Formula: C39H69NO5SSi2
• Molecular Weight: 720.218
• Mol file: 189453-35-8.mol

Synonyms:

Chemical Property of (4S,7R,8S,9S,13Z,16S)-4,8-Bis-{[tert-butyl(dimethyl)silyl]oxy}-5,5,7,9,13-pentamethyl-16-[(E)-1-methyl-2-(2-methyl-1,3-thiazol-4-yl)ethenyl]oxocyclohexadec-13-ene-2,6-dione

Chemical Property:

• Vapor Pressure: 0mmHg at 25°C
• Boiling Point: 698.1±55.0 °C(Predicted)
• PKA: 2.56±0.10(Predicted)
• Density: 1.01±0.1 g/cm3(Predicted)
• Solubility.: Chloroform, Dichloromethane, Ethanol, Ethyl Acetate, Methanol, Toluene

Purity/Quality:

99.90% ^*data from raw suppliers

(4S,7R,8S,9S,13Z,16S)-4,8-Bis-{[tert-butyl(dimethyl)silyl]oxy}-5,5,7,9,13-pentamethyl-16-[(E)-1-methyl-2-(2-methyl-1,3-thiazol-4-yl)ethenyl]oxocyclohexadec-13-ene-2,6-dione ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Uses: An intermediate in the synthesis of Epothilones. Epothilones are polyketide natural products that inhibit cancer cells by a mechanism similar to paclitaxel, and also are effective against paclitaxel-resistant tumours. Epothilone D is in phase I clinical testing of in patients with advanced solid tumours. Epothilone D is a cytotoxic macrolide that stabilises malignant cells' microtubules and arrests mitosis, a characteristic it shares with other epothilones. They bind to the same hepatic sites as does paclitaxel (Taxol) in a 1:1 stoichiometric ratio of a, b-tubulin heterodimers.

Technology Process of (4S,7R,8S,9S,13Z,16S)-4,8-Bis-{[tert-butyl(dimethyl)silyl]oxy}-5,5,7,9,13-pentamethyl-16-[(E)-1-methyl-2-(2-methyl-1,3-thiazol-4-yl)ethenyl]oxocyclohexadec-13-ene-2,6-dione

There total 209 articles about (4S,7R,8S,9S,13Z,16S)-4,8-Bis-{[tert-butyl(dimethyl)silyl]oxy}-5,5,7,9,13-pentamethyl-16-[(E)-1-methyl-2-(2-methyl-1,3-thiazol-4-yl)ethenyl]oxocyclohexadec-13-ene-2,6-dione 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: 90.0%

(3S,6R,7S,8S,12Z,15S,16E)-3,7-bis{[tert-butyl(dimethyl)silyl]oxy}-15-hydroxy-4,4,6,8,12,16-hexamethyl-17-(2-methyl-1,3-thiazol-4-yl)-5-oxoheptadeca-12,16-dienoic acid (193146-26-8) → (4S,7R,8S,9S,13Z,16S,1'E)-4,8-di-tert-butyldimethylsilyloxy-5,5,7,9,13-pentamethyl-16-[1-methyl-2-(2-methyl-1,3-thiazol-4-yl)-1-ethenyl]-1-oxa-13-cyclohexadecene-2,6-dione (189453-35-8)

Guidance literature:

(3S,6R,7S,8S,12Z,15S,16E)-3,7-bis{[tert-butyl(dimethyl)silyl]oxy}-15-hydroxy-4,4,6,8,12,16-hexamethyl-17-(2-methyl-1,3-thiazol-4-yl)-5-oxoheptadeca-12,16-dienoic acid; With 2,4,6-trichlorobenzoyl chloride; triethylamine; In tetrahydrofuran; at 20 ℃; for 0.333333h;

With dmap; In tetrahydrofuran; toluene; for 1h;

DOI:10.1021/ja002024b

Reference yield: 87.0%

(Z)-(4S,6R,7S,8S,9S,16S)-4,8-Bis-(tert-butyl-dimethyl-silanyloxy)-6-hydroxy-5,5,7,9,13-pentamethyl-16-[(E)-1-methyl-2-(2-methyl-thiazol-4-yl)-vinyl]-oxacyclohexadec-13-en-2-one (189453-54-1) → (4S,7R,8S,9S,13Z,16S,1'E)-4,8-di-tert-butyldimethylsilyloxy-5,5,7,9,13-pentamethyl-16-[1-methyl-2-(2-methyl-1,3-thiazol-4-yl)-1-ethenyl]-1-oxa-13-cyclohexadecene-2,6-dione (189453-35-8)

Guidance literature:

With Dess-Martin periodane; In dichloromethane; at 20 ℃; for 2h;

DOI:10.1021/ja971946k

Reference yield: 85.0%

t-butyldimethylsiyl triflate (69739-34-0) + epothilone D (189453-10-9) → (4S,7R,8S,9S,13Z,16S,1'E)-4,8-di-tert-butyldimethylsilyloxy-5,5,7,9,13-pentamethyl-16-[1-methyl-2-(2-methyl-1,3-thiazol-4-yl)-1-ethenyl]-1-oxa-13-cyclohexadecene-2,6-dione (189453-35-8)

Guidance literature:

With triethylamine; In dichloromethane; at -78 ℃;

DOI:10.1016/j.tetlet.2003.12.123

upstream raw materials:

(Z)-(4S,6R,7S,8S,9S,16S)-4,8-Bis-(tert-butyl-dimethyl-silanyloxy)-6-hydroxy-5,5,7,9,13-pentamethyl-16-[(E)-1-methyl-2-(2-methyl-thiazol-4-yl)-vinyl]-oxacyclohexadec-13-en-2-one

(12Z,16E)-(3S,6R,7S,8S,15S)-3,7-Bis-(tert-butyl-dimethyl-silanyloxy)-15-hydroxy-4,4,6,8,12,16-hexamethyl-17-(2-methyl-thiazol-4-yl)-5-oxo-heptadeca-12,16-dienoic acid

(3S,6R,7S,8S,12Z,15S,16E)-3,7-bis{[tert-butyl(dimethyl)silyl]oxy}-15-hydroxy-4,4,6,8,12,16-hexamethyl-17-(2-methyl-1,3-thiazol-4-yl)-5-oxoheptadeca-12,16-dienoic acid

(1S)-1-[(E)-1-Methyl-2-(2-methyl-1,3-thiazol-4-yl)-1-ethenyl]-3-butenyl (3S,6R,7S,8S)-3,7-di-[tert-butyldimethylsilyloxy]-4,4,6,8,12-pentamethyl-5-oxo-12-tridecenoate

Downstream raw materials:

epothilone D

(1S,3S,7S,10R,11S,12S,16S)-7,11-dihydroxy-8,8,10,12,16-pentamethyl-3-((E)-1-(2-methylthiazol-4-yl)prop-1-en-2-yl)-4-oxabicyclo[14.1.0]heptadecane-5,9-dione

epothilone B

ixabepilone