Md. Bachi et Ee. Korshin, THIOL-OXYGEN COOXIDATION OF MONOTERPENES - SYNTHESIS OF ENDOPEROXIDESSTRUCTURALLY RELATED TO ANTIMALARIAL YINGZHAOSU-A, Synlett, (2), 1998, pp. 122
The first application of thiol-oxygen cooxidation of 1,5-dienes for th
e preparation of 6-membered ring endoperoxides is described. Treatment
of S-(-)-limonene and related monoterpenes with PhSH, dioxygen and a
radical initiator, followed by selective reduction of intermediate hyd
roperoxide-endoperoxides afforded enylthiomethyl-2,3-dioxabicyclo[3.3.
1]nonan-8-ols.