Synthetic Studies of Laurencin and Related Compounds. V. Transformation of<i>cis</i>-2-Ethyl-8-formyl-3,4,7,8-dihydro-2<i>H</i>-oxocin-3-one 3-Ethylene Acetal into (±)-Laurencin
Transformation of the title starting material into (±)-laurencin, which implies synthesis of the natural product, is described. The structure and configuration of synthetic intermediates are defined on the basis of the spectral evidence.
A Suite of Activity-Based Probes for Human Cytochrome P450 Enzymes
作者:Aaron T. Wright、Joongyu D. Song、Benjamin F. Cravatt
DOI:10.1021/ja9037609
日期:2009.8.5
inhibitors, anastrozole, significantly increases probe-labeling of P450 1A2, indicative of a heterotypic cooperativity effect on a central P450 isozyme involved in metabolizing numerous drugs and xenobiotics. The results presented herein greatly expand the suite of ABPP probes for profiling P450s and illuminate newapplications for these tools to understand P450-drug interactions.
Au-Catalyzed Synthesis of 5,6-Dihydro-8<i>H</i>-indolizin-7-ones from <i>N</i>-(Pent-2-en-4-ynyl)-β-lactams
作者:Yu Peng、Meng Yu、Liming Zhang
DOI:10.1021/ol802159v
日期:2008.11.20
Au-catalyzed synthesis of 5,6-dihydro-8H-indolizin-7-ones from readily available N-(pent-2-en-4-ynyl)-beta-lactams is developed. In this reaction, a 5-exo-dig cyclization of the beta-lactam nitrogen to the Au-activated C-C triple bond is followed by heterolytic fragmentation of the amide bond, forming a highly nucleophilic acyl cation. An expedient formal synthesis of indolizidine 167B was easily achieved using this new method.
Miginiac-Groizeleau,L. et al., Bulletin de la Societe Chimique de France, 1965, p. 3560 - 3565
作者:Miginiac-Groizeleau,L. et al.
DOI:——
日期:——
Synthese de composes cyclopropaniques par action d'organozinciques α- et α,γ-ethyleniques sur les halogenures d'alcoyle α-acetyleniques. Extension a d'autres composes α-acetyleniques fonctionnels