Journal of Organic Chemistry p. 4285 - 4296 (1994)
Update date:2022-09-26
Topics: Synthesis Evaluation Tubulin Photoaffinity label Diazocyclohexadienone and azide Colchicine, combretastatin, and 3,4,5-trimethoxybiphenyl
Olszewski
Marshalla
Sabat
Sundberg
Analogs of tubulin assembly inhibitors such as colchicine, combretastatin, and 3,4,5-trimethoxybiphenyl which incorporate a 6-diazo-2,4-cyclohexadienone (o-quinone diazide) ring have been synthesized and characterized. The compounds synthesized include 6-diazo-4-(2',3',4'-trimethoxyphenyl)cyclohexa-2,4-dien-1-one and its 3-methyl and 3-ethyl analogs (1a-c), 6-diazo-3-(2,3,4-trimethoxyphenyl)-2,4-cyclohexadien-1-one and its 4-methyl and 4-ethyl derivatives (2a-c), 4-[Z-2-(3',4',5'-trimethoxyphenyl)ethenyl]-6-diazocyclohexa-2,4-dienon e (3), 3-[Z-2-(3',4',5'-trimethoxyphenyl)ethenyl]-6-diazocyclohexa-2,4-dien-1 -one (4), the corresponding dihydro derivatives (5, 6) and two isomeric diazocyclohexadienones derived from N-acetylcolchinol (7, 8). Compounds in which the cyclohexadienone oxygen is approximately isostructural with carbonyl or hydroxy functions of the parent compounds exhibit good activity in the tubulin assembly inhibition assay. 2'-Alkyl-4'azido-3,4,5-trimethoxy-1,1'-biphenyls also show good activity as tubulin assembly inhibitors.
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