Biologically active quassinoids : synthetic methodology for the conversion of chaparrin into glaucarubolone esters and quassinoid analogs
作者:Subodh C. Bhatnagar、Andrew J. Caruso、Judith Polonsky、Berta Soto Rodriguez
DOI:10.1016/s0040-4020(01)81638-0
日期:1987.1
Biologically inactive but easily available chaparrin has been converted into potent antileukemic C-15 esters of glaucarubolone and quassinoid analogs in which the C-15 ester side chain has been replaced by an alkyl or alkenyl group.The synthetic methodology developed has been applied to the preparation of C-15 ester derivatives , , and quassinoid analogs , and .
Four bitter quassinoid glycosides, shinjuglycosides A, B, C, and D were isolated from seeds of Ailanthus altissima SWINGLE and their structures were established to be 2-β-D-glucopyranosides of chaparrin, shinjulactone A, amarolide 11-acetate, and amarolide, respectively, from spectral data and enzymatic or acid-catalyzed hydrolysis.