Anthracycline ethers and use therefor

Drug – bio-affecting and body treating compositions – Conjugate or complex of monoclonal or polyclonal antibody,... – Conjugated via claimed linking group – bond – chelating agent,...

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260365, 260376, 260380, 536 4, 536 17, A61K 3171, C07H 1524

Patent

active

041338774

ABSTRACT:
Novel antitumor antibiotics, which are daunomycin analogues of the formula: ##STR1## wherein R.sub.1 is hydrogen or a C.sub.1 -C.sub.4 lower alkyl, R.sub.2 is a C.sub.1 -C.sub.4 lower alkyl, a C.sub.3 -C.sub.6 cycloalkyl, phenyl, lower alkyl phenyl, lower alkoxy phenyl or halophenyl, and R.sub.3 is hydrogen or trifluoroacetyl are prepared by condensing 2,3,6-trideoxy-3-trifluoroacetamido-4-0-trifluoroacetyl-.alpha.-L-lyxopyra nosyl chloride with novel aglycones of the formula: ##STR2## which are in turn prepared by a novel method from 14-bromodaunomycinone through a series of novel intermediates.

REFERENCES:
patent: 4039663 (1977-08-01), Arcamone et al.
patent: 4058519 (1977-11-01), Arcamone et al.

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