Stereoselective Synthesis of 4α-Alkyloxy-2-α/β-Bromopodophyllotoxin Derivatives as Insecticidal Agents
作者:Hui Xu、Qingtian Wang、Yong Guo
DOI:10.1002/chem.201100855
日期:2011.7.18
Interesting insecticides: 4α‐Alkyloxy‐2α/β‐bromopodophyllotoxin derivatives were readily prepared with excellent stereoselectivity due to intramolecular steric effects (see scheme). The ratio of two stereoisomers, 2α/β‐bromo‐4‐O‐tetrahydropyranylpodophyllotoxin, could be well controlled by the reaction temperature.