859498-31-0Relevant articles and documents
Preparation method of cabazitaxel
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, (2021/11/27)
The invention discloses a preparation method of cabazitaxel, which comprises the following specific steps: dissolving 10-deacetylbaccatin III with dichloromethane and pyridine, dropwise adding 2,2,2-trichloroethyl chloroformate, and treating to obtain an intermediate I; mixing toluene, 4-dimethylaminopyridine, the intermediate I and (4S,5R)-3-tert-butoxycarbony-2-(4-anisy)- 4-phenyl-5-oxazolidinecarboxylic acid, stirring, dropwise adding N,N'-dicyclohexylcarbodiimide, and stirring for reaction to obtain an intermediate II; dissolving the intermediate II with ethyl acetate and acetic acid, adding zinc powder, carrying out a stirring reaction to obtain an intermediate III, dissolving the intermediate III with dichloromethane, adding 1,8-bis(dimethylamino)naphthalene, a molecular sieve and trimethyloxonium tetrafluoroborate, and carrying out a stirring reaction to obtain an intermediate IV; dissolving and clarifying the intermediate IV with methanol, dropwise adding a hydrochloric acid methanol solution having a concentration of 1mol/L, and stirring for reaction to obtain cabazitaxel. According to the method, methylation can be realized at room temperature, the product purity is good, the yield is high, starting materials are easy to obtain, and large-scale preparation can be carried out.
Docetaxel side chain 2'-derived novel taxanes antitumor compound as well as synthesis method and application thereof
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, (2017/08/29)
The invention discloses a docetaxel side chain 2'-derived novel taxanes antitumor compound shown as the general structure formula (I) as well as a synthesis method and application thereof. In the formula, X is N or O, R is H or acetyl, and R' is H, nitryl, cyano, methoxyl or a halogen group. The synthesis method takes 10-deacetylbaccatin is used as a raw material; after 7-OH and 10-OH are protected, condensation with phenylisoserine (side chain) protecting 3'-NHBoc and 2'-OH in the presence of condensation agents DCC (Dicyclohexylcarbodiimide) and DMAP (Dimethylaminopyridine) is performed; esterification with substituted phenyl isoxazole carboxylic acid or substituted phenyl oxadiazole methyl carboxylic acid in the presence of the DCC and the DMAP is performed; finally, a protecting group is removed to obtain the compound. The compound disclosed by the invention has relatively high activity on tumor cells.
Dynamic kinetic resolution of α-chloro β-keto esters and phosphonates: Hemisynthesis of Taxotere through Ru-DIFLUORPHOS asymmetric hydrogenation
Prevost, Sebastien,Gauthier, Sebastien,De Andrade, Maria Cristina Cano,Mordant, Celine,Touati, Ali Rhida,Lesot, Philippe,Savignac, Philippe,Ayad, Tahar,Phansavath, Phannarath,Ratovelomanana-Vidal, Virginie,Genet, Jean-Pierre
experimental part, p. 1436 - 1446 (2010/11/03)
The dynamic kinetic resolution (DKR) of racemic α-chloro β-ketoesters and α-chloro β-ketophosphonates through ruthenium-mediated asymmetric hydrogenation is reported. The corresponding α-chloro β-hydroxyesters and α-chloro β- hydroxyphosphonates were obtained in good to high enantio- and diastereomeric excesses using, in particular, the atropisomeric ligand DIFLUORPHOS. This methodology allowed an efficient preparation of the anti phenylisoserine side chain of Taxotere which has been used for the hemisynthesis of the cancer therapeutic agent itself. In addition, 13C NMR in chiral oriented solvents was used to investigate the DKR effect.