Starting from natural product podophyllotoxin 1 substituted heterolignans were identified with promising insecticidal in vivo activity. The impact of substitution in each segment of the core structure was investigated in a detailed SAR study, and variation of substituents in both aromatic moieties afforded derivatives 5 and 43 with broad insecticidal activity against lepidopteran and coleopteran species. In vitro measurements supported by modeling studies indicate that heterolignans 3-134 act as tubuline polymerization inhibitors interacting with the colchicine-binding site. Insect specific structure-activity effects were observed showing that the insecticidal SAR described herein differs from reported cytotoxicity studies. (C) 2009 Elsevier Ltd. All rights reserved.
Benary, Chemische Berichte, 1911, vol. 44, p. 1765
作者:Benary
DOI:——
日期:——
792. Tetronic acids and related compounds. Part I. Synthesis from α-hydroxy-esters
作者:L. J. Haynes、A. H. Stanners
DOI:10.1039/jr9560004103
日期:——
Heterocyclic Analogs of Prostaglandins: I. Synthesis of 3-Alkyl(Aralkyl)-2,5-dihydrofuran-2-ones as Synthons for 11-Deoxy-10-oxaprostanoids
作者:F. S. Pashkovskii、Ya. M. Katok、T. S. Khlebnikova、E. V. Koroleva、F. A. Lakhvich
DOI:10.1023/b:rujo.0000003193.75790.de
日期:2003.7
3-Acyl(arylmethyleneacyl)tetronic acids were synthesized. Selective hydrogenation of the carbonyl group in the acyl fragment and reduction of the conjugated double bond afforded in high yield the corresponding 3-alkyl(aralkyl) derivatives possessing either natural or modified prostaglandin alpha-chain. Reduction of the conjugated double bond in vinylogous 3-alkyl(aralkyl)tetronic acid amides with sodium cyanotrihydridoborate gave a mixture of stereoisomeric beta-amino lactones which underwent retro-Michael elimination of the amine residue, leading to 3-alkyl(aralkyl)-2,5-dihydrofuran-2-ones. The latter can be regarded as synthons for 11-deoxy-10-oxaprostanoids.