66460-63-7Relevant academic research and scientific papers
Total syntheses of (+)-polygalolide A and (+)-polygalolide B: Elucidation of the absolute stereochemistry and biogenetic implications
Sugano, Yukihito,Kikuchi, Fumiaki,Toita, Akinori,Nakamura, Seiichi,Hashimoto, Shunichi
supporting information; experimental part, p. 9682 - 9690 (2012/09/07)
The total syntheses of (+)-polygalolide A and (+)-polygalolide B have been completed by using a carbonyl ylide cycloaddition strategy. Three of the four stereocenters, including two consecutive tetrasubstituted carbon atoms at C2 and C8, were incorporated
Total synthesis and absolute stereochemistry of polygalolides A and B
Nakamura, Seiichi,Sugano, Yukihito,Kikuchi, Fumiaki,Hashimoto, Shunichi
, p. 6532 - 6535 (2007/10/03)
(Chemical Equation Presented) Carbonyl ylides to the fore: the first total synthesis of polygalolides A (1) and B (2) has been achieved by exploiting a tandem carbonyl ylide formation/1,3-dipolar cycloaddition to construct the unprecedented 5,10-dioxatric
Structure-activity relationship for DNA topoisomerase II-induced DNA cleavage by azatoxin analogues
Madalengoitia, Jose S.,Tepe, Jetze J.,Werbovetz, Karl A.,Lehnert, Erich K.,Macdonald, Timothy L.
, p. 1807 - 1815 (2007/10/03)
Eighteen analogues of the nonintercalative DNA topoisomerase II (topo II)-active epipodophyllotoxin-ellipticine hybrid, azatoxin, were synthesized and evaluated for their ability to induce topo II-mediated DNA strand breaks in vitro. In general, the SAR p
Inhibition of DNA topoisomerase II by azaelliptitoxins functionalized in the variable substituent domain
Tepe, Jetze J.,Madalengoitia, Jose S.,Slunt, Kelli M.,Werbovetz, Karl W.,Spoors, P. Grant,Macdonald, Timothy L.
, p. 2188 - 2196 (2007/10/03)
A series of novel C11-substituted derivatives of azaelliptitoxin (azatoxin) have been synthesized and tested for their inhibitory activity against human DNA topoisomerase II. Incorporation of a C11 polyamine or amine resulted in an i
Esters are effective co-catalysts in copper-catalyzed methanolysis of aryl bromides
Capdevielle, Patrice,Maumy, Michel
, p. 1007 - 1010 (2007/10/02)
Rate of copper(I)-catalyzed substitution of aryl bromides into methyl-aryl ethers by methoxide ion is greatly enhanced in presence of esters. Soluble copper(I) complexes 2, arising from tetrahedral adducts 1 of methoxide onto esters, are likely responsible for this improvement.
