A ring fragmentation and intramolecular azomethine ylide 1,3-dipolar cycloaddition sequence of reactions was successfully used in the preparation of a known (+/-)-cycloclavine precursor in good overall yield. Results of efforts to incorporate the tetrasubstituted cyclopropane ring present in cycloclavine are also discussed. (C) 2013 Elsevier Ltd. All rights reserved.
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Chiba Univ, Grad Sch Pharmaceut Sci, Lab Biofunct Mol Chem, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, JapanChiba Univ, Grad Sch Pharmaceut Sci, Lab Biofunct Mol Chem, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan
Sato, Keigo
Takanashi, Noriyuki
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Chiba Univ, Grad Sch Pharmaceut Sci, Lab Biofunct Mol Chem, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, JapanChiba Univ, Grad Sch Pharmaceut Sci, Lab Biofunct Mol Chem, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan
Takanashi, Noriyuki
Kogure, Noriyuki
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Chiba Univ, Grad Sch Pharmaceut Sci, Lab Biofunct Mol Chem, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, JapanChiba Univ, Grad Sch Pharmaceut Sci, Lab Biofunct Mol Chem, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan
Kogure, Noriyuki
Kitajima, Mariko
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Chiba Univ, Grad Sch Pharmaceut Sci, Lab Biofunct Mol Chem, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, JapanChiba Univ, Grad Sch Pharmaceut Sci, Lab Biofunct Mol Chem, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan
Kitajima, Mariko
Takayama, Hiromitsu
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Chiba Univ, Grad Sch Pharmaceut Sci, Lab Biofunct Mol Chem, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, JapanChiba Univ, Grad Sch Pharmaceut Sci, Lab Biofunct Mol Chem, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan