Lewis Acid Catalyzed Inverse-Electron-Demand Diels−Alder Reaction of Tropones
作者:Pingfan Li、Hisashi Yamamoto
DOI:10.1021/ja908127f
日期:2009.11.25
Lewisacidcatalyzed inverse-electron-demand Diels-Alderreaction of tropone derivatives was developed. Up to 97% ee was obtained for the chiral dinucleus BINOL-aluminum complex catalyzedreaction between tropones and ketene diethyl acetal to give bicyclo[3.2.2] ring structures, which opens up a unique way of making chiral seven-membered rings.
Synthesis andIn VitroProtozoocidal Evaluation of Novel Diazabicyclic Tropolone Derivatives
作者:Alexander Khrizman、Rachel D. Slack、Richard C. Remsing、Susan Little、Vanessa Yardley、Guillermo Moyna
DOI:10.1002/ardp.200700143
日期:2007.11
The synthesis and in vitro antiparasitic activity of twenty‐seven novel diazabicycles based on tropolone ethers is presented. The compounds can be readily prepared by means of a high‐yielding hetero Diels–Alder reaction using simple and readily available starting materials. Several of the new diazabicycles have in vitro activities against Trypanosoma cruzi, Leishmania donovani, Trypanosoma brucei rhodesiense