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1.
J Med Chem ; 24(12): 1487-92, 1981 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-7310825

RESUMO

The preparation of 2"-deoxykanamycin B (12) and 2",3',4'-trideoxykanamycin B (14) from neamine (1) is described. Key intermediates in the synthesis of these 2"-deoxyaminoglycoside antibiotics are 3',4'-bis-O-(p-nitrobenzoyl)-1,2',3,6'-tetrakis-N-(trifluoroacetyl)neamine (6) and 3',4'-dideoxy-1,2',3,6'-tetrakis-N-(trifluoroacetyl)neamine (9). The amino groups of these intermediates are blocked by the trifluoroacetyl group, a blocking group not widely used in aminoglycoside chemistry.


Assuntos
Canamicina/análogos & derivados , Neomicina , Bactérias/efeitos dos fármacos , Fenômenos Químicos , Química , Canamicina/síntese química , Canamicina/farmacologia , Espectroscopia de Ressonância Magnética
12.
Eur J Biochem ; 62(3): 527-37, 1976 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-1261540

RESUMO

The synthesis of an isomer of prostaglandin F 2alpha,9alpha,11alpha,15(S)-trihydroxyprosta-4-cis,13-transdienoic acid is described. The metabolism of this compound in the rat has been investigated. The rate of degradation by beta-oxidation was slowed down considerably. Thus 10-20% of the injected isomer was excreted in the urine unchanged indicating a longer half-life in the circulation than for prostaglandin F 2alpha. More over 2% was excreted as C20 metabolites, 11-18% as C18 metabolites and 8-15% as C16 metabolites. This relative resistance to degradation by beta-oxidation is of considerable biochemical and pharmacological interest.


Assuntos
Prostaglandinas F Sintéticas , Animais , Isomerismo , Masculino , Espectrometria de Massas , Prostaglandinas F/síntese química , Prostaglandinas F/metabolismo , Ratos , Relação Estrutura-Atividade
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