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• W2070243721 endingPage "1779" @default.
• W2070243721 startingPage "1771" @default.
• W2070243721 abstract "A synthesis of four Annonaceous acetogenins, asiminocin, asimicin, asimin, and bullanin, by a modular approach from seven fundamental subunits, A-G, is described. The approach employs a central core aldehyde segment, C, to which are appended an aliphatic terminus, A or B, a spacer subunit, D or E, and a butenolide terminus, F or G. Coupling of the A, B, D, and E segments to the core aldehyde unit is effected by highly diastereoselective additions of enantiopure allylic indium or tin reagents. The butenolide termini are attached to the ACD, BCE, or BCD intermediates by means of a Sonogashira coupling. The design of the core, spacer, and termini subunits is such that any of the C30, C10, or C4 natural acetogenins or stereoisomers thereof could be prepared. IC50 values for the four aforementioned acetogenins against H-116 human colon cancer cells were found to be in the 10(-3) to 10(-4) microM range. The IC90 activities were ca. 10(-3) microM for asimicin and asimin but only 0.1-1 microM for bullanin and asiminocin." @default.
• W2070243721 created "2016-06-24" @default.
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• W2070243721 date "2003-02-08" @default.
• W2070243721 modified "2023-09-24" @default.
• W2070243721 title "A Modular Synthesis of Annonaceous Acetogenins" @default.
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• W2070243721 doi "https://doi.org/10.1021/jo026433x" @default.
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