Application of chiral tethers to intramolecular [2+2] photocycloadditions: synthetic approach to (−)-italicene and (+)-isoitalicene
作者:Sophie Faure、Olivier Piva
DOI:10.1016/s0040-4039(00)01933-x
日期:2001.1
A synthetic approach to (−)-italicene and (+)-isoitalicene, sesquiterpenes which possess the rare tricyclo[5.4.0.01,5] undecane skeleton has been developed using as key step a highly regio- and diastereoselective [2+2] photocycloaddition. (S)-Lactic acid plays the role of a chiral removable tether group during the building of the cyclobutane ring.
已开发出具有稀有的三环[5.4.0.0 1,5 ]十一烷骨架的合成(-)-斜体和(+)-异斜体,倍半萜的合成方法,该方法使用高度区域选择性和非对映选择性的[2 + 2]作为关键步骤光环加成。(S)-乳酸在环丁烷环的建立过程中起手性可除去的束缚基团的作用。