were prepared by formal [3 + 3] cyclization of 1,3-bis(silylenolethers) with 3-silyloxy-2-en-1-ones or 1,1-diacetylcyclopropane to give functionalized salicylates, Suzuki cross-coupling reactions of the corresponding triflates, and subsequent BBr3-mediated lactonization. A second approach to dibenzo[b,d]pyran-6-ones relies on the [3 + 3] cyclization of 1,3-bis(silylenolethers) with 1-(2-methoxyphe
Synthesis and antitumor activity of simple vinyl and .alpha.-methylene-.gamma.-butyrolactone sulfonate esters and silyl enol ethers
作者:Peter J. Stang、Warren L. Treptow
DOI:10.1021/jm00136a019
日期:1981.4
A number of simple silyl enol ethers and vinyl trifluoromethanesulfonates, a relatively new class of organic compounds capable of undergoing alkylation by a nucleophilic addition-elimination process, were evaluated in the P388 lymphocytic leukemia system. No activity (ILS = 8-22%) was observed in the simple vinyl derivatives. Some activity (ILS = 20-42%) was observed for a series of siloxy and sulfonate
Bicyclic salicylates were prepared by [3+3] cyclization of 1,3-bis(silylenolethers) with cyclic 3-(silyloxy)alk-2-en-1-ones. Graphical Abstract Synthesis of Bicyclic Salicylates by [3+3] Cyclization of 1,3-Bis(SilylEnolEthers) with Cyclic 3-(Silyloxy)alk-2-en-1-ones