[DE] PROTEINBINDENDE DERIVATE VON PLATINKOMPLEXEN MIT CYCLOBUTAN-1,1-DICARBOXYLATLIGANDEN<br/>[EN] PROTEIN-BOUND DERIVATIVES OF PLATINUM COMPLEXES CONTAINING CYCLOBUTANE 1.1-DICARBOXYLLATE LIGANDS<br/>[FR] DERIVES SE LIANT A DES PROTEINES ISSUS DE COMPLEXES DE PLATINE COMPRENANT DES LIGANDS DE CYCLOBUTANE-1,1-DICARBOXYLATE
申请人:KTB TUMORFORSCHUNGS GMBH
公开号:WO2004083223A1
公开(公告)日:2004-09-30
Die Erfindung betrifft niedermolekulare Platinkomplexe mit Cyclobutan-1,1-dicarboxylatliganden, die eine proteinbindende Gruppe enthalten.
Indium-catalyzed oxidative cross-dehydrogenative coupling of chromenes with 1,3-dicarbonyls and aryl rings
作者:Fanmei Li、Zhilin Meng、Jing Hua、Wei Li、Hongxiang Lou、Lei Liu
DOI:10.1039/c5ob00277j
日期:——
cross-dehydrogenative coupling of electronically varied chromenes with 1,3-dicarbonyl compounds and aryl rings has been established. Both the C–H alkylation and arylation proceed smoothly at room temperature to afford diverse α-substituted chromene compounds in up to 91% yields. Besides these two types of C–H components, simple ketones like cyclohexanones also prove to be well tolerated.
rare 1,1-dipole synthons, allyl sulfones are rarely used in target-oriented syntheses, likely due to the lack of a general catalytic method for their branch-selective allylicsubstitution. Herein, we identified allyl 4-chlorophenyl sulfone as a versatile linchpin for both base-mediated α-derivatization and subsequent cobalt-catalyzed allylicsubstitution. The sequential transformations allow for highly
One-Pot Tandem Diastereoselective and Enantioselective Synthesis of Functionalized Oxindole-Fused Spiropyrazolidine Frameworks
作者:Liang-Yong Mei、Xiang-Ying Tang、Min Shi
DOI:10.1002/chem.201403990
日期:2014.10.6
A highly efficient palladium(0)‐catalyzed asymmetric [3+2] cycloaddition using 3‐diazooxindoles serving as dipolarophiles affords functionalized pyrazolidinederivatives in an atom‐economical way. In addition, by trapping the pyrazolidinederivatives with maleimides, the corresponding spiropyrazolidine oxindoles containing multiple stereogenic centers have been obtained in high yields along with moderate
Epoxyimines, formed with epoxyaldehydes, react via cycloaddition with amino-protected glycyl halides to provide 3-protected-amino-4-(substituted oxiranyl)azetidinones. Chiral epoxyimines from chiral epoxyaldehydes induce high levels of asymmetric induction during the cycloaddition to provide substantially one diastereomer of the 3,4-disubstituted azetidinone. For example, the epoxyimine formed with (2R,3S)-2-formyl-3-phenyloxirane and 2,4-dimethoxybenzylamine is reacted with phthalimidoacetyl chloride to provide [3R,4R,4(2S,3S)]-1-(2,4-dimethoxybenzyl)-3-phthalimido-4-(3-phenyloxiran-2-yl)-2-azetidinone.
The epoxy-substituted azetidinones are useful intermediates for β-lactam antibiotic compounds.