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Stereoselective Synthesis of 4α‐Alkyloxy‐2‐α/β‐Bromopodophyllotoxin Derivatives as Insecticidal Agents
Author(s) -
Xu Hui,
Wang Qingtian,
Guo Yong
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201100855
Subject(s) - stereoselectivity , steric effects , intramolecular force , chemistry , stereochemistry , computer science , organic chemistry , combinatorial chemistry , catalysis
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.