Total Synthesis of Peroxyacarnoates A and D: Metal-Mediated Couplings as a Convergent Approach to Polyunsaturated Peroxides
摘要:
The first syntheses of peroxyacarnoates A and D, members of a family of enyne-containing alkoxydioxanes, have been achieved on the basis of chemoselective ozonolysis within a polyunsaturated framework and Pd-mediated cross-couplings of a functionalized 1,2-dioxane.
A Highly Stereoselective Total Synthesis of Hispidospermidin: Derivation of a Pharmacophore Model
作者:Alison J. Frontier、Subharekha Raghavan、Samuel J. Danishefsky
DOI:10.1021/ja9944960
日期:2000.7.1
The totalsynthesis of the title compound has been accomplished. Among the key steps were (i) a conjugate additionRobinson annulation-type sequence (see 4), (ii) intramolecular carbomercuration (see 3), (iii) a reduction−ketonization sequence (see 25), (iv) cycloetherification of an unactivated methylene group (see 28), and reductive amination (see 1). A highly preliminary SAR profile suggests that