56390-08-0Relevant articles and documents
SYNTHESIS OF EPIRUBICIN FROM 13-DIHYDRODAUNORUBICINE
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Page/Page column 6, (2008/06/13)
A method of preparing an anthracyclin such as epirubicin from a starting material comprising 13-dihydrodaunorubicine (13-daunorubicinol). The method comprises producing N-Trifluoroacetyl-13-daunorubicinol from 13-daunorubicinol by acylation. The N-Trifluoroacetyl-13-daunorubicinol is reacted with an aprotic solvent and an acylating agent to produce an intermediate sulfoxy salt which is treated with a strong base to produce 4′-keto-N-Trifluoroacetyldaunorubicin. The 4′-keto-N-Trifluoroacetyldaunorubicin is reacted with a reducing agent, such as borohydride of an alkaline metal, to produce N-Trifluoroacetyl-4′-epi-daunorubicin. The N-Trifluoroacetyl-4′-epi-daunorubicin is hydrolyzed in a basic solution to produce an intermediate compound. The intermediate compound is reacted with a halogenizing agent to produce a 14-Hal-derivative. The 14-Hal derivative is hydrolized in the presence of a formate of an alkaline metal to produce the desired final compound.
SUBSTITUTIONS D'ESTERS ALLYLIQUES: PREPARATION DE GLYCALS AMINES EN C-3 ET ETUDE DE LEUR GLYCOSIDATION ACIDO-CATALYSEE. APPLICATION A L'HEMISYNTHESE DE GLYCOSIDES DU GROUPE DES ANTHRACYCLINES
Boivin, J.,Pais, M.,Monneret, C.
, p. 193 - 204 (2007/10/02)
3-Amino-1,5-anhydro-2,3,6-trideoxy-L-arabino- and -L-ribo-hex-1-enitol were prepared by substitution of the allylic ester function of 1,5-anhydro-3,4-di-O-benzoyl-2,6-dideoxy-L-arabino-hex-1-enitol with sodium azide, followed by reduction with lithium aluminium hydride.Glycosidation was performed with various alcohols, in particular daunomycinone.In the latter case, the partial synthesis of 4'-epi- and 3',4'-epi-daunorubicines was accomplished in three major steps.