Generally applicable synthesises which lead to d, l-iridomyrmecin and related bicyclic γ and δ-lactones are reported.
据报道,普遍适用的合成方法可导致d,1- iridomyrmecin以及相关的双环γ和δ-内酯。
Chemistry of tetrahedral intermediates. 11. Stereochemical studies on hemiorthothiol and hemiorthothiolate tetrahedral intermediates
作者:Farid F. Khouri、Moses K. Kaloustian
DOI:10.1021/ja00281a040
日期:1986.10
Generation et scission de monothioorthoesters de differents types (acyclique, monocyclique et bicyclique)
不同类型(acyclique、monocyclique et bicyclique)的单硫代原酸酯的生成和断裂
Cyclization of Hydroxyenol Ethers into Spiroacetals. Evidence for the position of the transition state and its implication on the stereoelectronic effects in acetal formation
controlled cyclizations of the same four hydroxyenolethers produced, along with the more stable spiroacetals mentioned above, the less stable spiroacetals 23, 25, and 28. These results show that the kinetically controlled cyclization takes place via an early transitionstate which produces a mixture of the less stable and the more stable isomers. These results are explained by an early transition state
A new strategy for the assembly of himbacine and analogues, which display potent biological activity, is described. A four-step route to a key intermediate has been developed, in which the key step is a highly diastereoselective Michael-Dieckmann domino reaction. Use of an enantioenriched Michael acceptor, readily obtained by an asymmetric dihydroxylation reaction, allowed kinetic resolution of the Michael donor, which was itself prepared by a domino reaction.