The reactivity of the title compounds with different nucleophiles has been checked and it was shown that products from reaction with sodium phenylthiolate result from an elimination-addition process in which protoanemonin is the key intermediate. The synthesis of (−)-(R)-β-angelica lactone is reported for the first time.
The reaction of the dilithium salt of phenylselenoacetic acid with a variety of glycidyl substrates yields 5-heteromethyl-3-phenylseleno-tetrahydrofuran-2-ones. Selective oxidation of the selenium atom allows the preparation of 5-thiomethyl- and 5-aminomethyl-2-(5H)-furanones.
A Facile Solid-Phase Synthesis of Substituted 2(5<i>H</i>)-Furanones with Sulfone Traceless Linker
作者:Shou-Ri Sheng、Pei-Gang Huang、Wei Zhou、Hai-Rong Luo、Shu-Ying Lin、Xiao-Ling Liu
DOI:10.1055/s-2004-834804
日期:——
A novel solid-phase synthetic method for substituted 2(5H)-furanones with traceless sulfone linker strategy has been developed. The products were obtained in good yields and excellent purities.
γ-heterosubstituted γ-methyl-α,β-butenolides are presented, starting mainly from C3 synthons (glyceraldehyde, glycidaldehyde, acrolein and 2,3-epoxypropyl ethers). Good general methods for the preparation of γ-hydroxymethyl-α,β-butenolide 2, several of its ether derivatives, as well as of γ-bromomethyl-α,β-butenolide 5, are given. The reactivities of these structurallysimple but highly functionalized compounds